> APN Configuration Mode Commands
> The Access Point Name (APN) Configuration Mode is used to create and configure APN profiles within the current system context of a UMTS/LTE service.
> Important: The commands or keywords/variables that are available are dependent on platform type, product version, and installed license(s).
> aaa
> This command configures Authentication, Authorization, and Accounting (AAA) functionality at the Access Point Name (APN) level.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> aaa { group aaa_group_name | secondary-group aaa_group_name }
> default aaa { group | secondary-group aaa_group_name }
> no aaa { group aaa_group_name | secondary-group }
> no aaa
> Disables the specified AAA group for the specific APN.
> no aaa { group | secondary-group }

> • | group: Uses the default AAA group.

> • | secondary-group: Removes the secondary AAA group from the APN’s configuration.

> default aaa { group | secondary-group }
> Configures the default setting for the specified parameter.

> • | group: Uses the default AAA group—the one specified at the context level or in the APN template.

> • | secondary-group: Removes the secondary AAA group from the APN configuration.

> aaa_group_name
> Specifies the AAA server group for the APN as an alphanumeric string of 1 through 63 characters.
> secondary-group aaa_group_name
> Specifies the secondary AAA server group for the APN. aaa_group_name must be an alphanumeric string of 1 through 63 characters.
> Usage
> Use this command to configure AAA functionality at the APN level.
> Instead of having a single list of servers per context, this feature configures multiple server groups within a context and applies individual server group for APNs in that context. Each server group consists of a list of AAA servers for each AAA function (accounting, authentication, charging, etc.).
> The AAA secondary server group supports the RADIUS Fire-and-Forget feature in conjunction with GGSN for secondary accounting (with different RADIUS accounting group configuration) to the RADIUS servers without expecting acknowledgement from the server, in addition to standard RADIUS accounting. This secondary accounting will be an exact copy of all the standard RADIUS accounting message (RADIUS Start / Interim / Stop) sent to the standard AAA RADIUS server.
> If the same AAA group is configured with both the aaa group aaa_group_name and the aaa secondary-group aaa_group_name commands, then this configuration will have no effect and secondary accounting will not happen.
> The AAA secondary server group configuration takes effect only when used with APN accounting-mode set to radius-diameter (or) with mediation-acct enabled. The RADIUS accounting triggers for both standard RADIUS accounting and secondary accounting will be taken from the AAA group configured with the aaa group aaa_group_name command. On the fly change of this configuration is not supported. Any change to the configuration will have effect only for new calls.
> Example
> The following command applies the AAA server group star1 to an APN within the specific context:
> aaa group star1
> access-link
> Configures IP fragmentation processing over the Access-link (PPP, GTP etc.).
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> access-link ip-fragmentation { normal | df-ignore | df-fragment-and-icmp-notify }
> default access-link ip-fragmentation
> normal
> Default: Enabled
> Drops the packet and sends an ICMP unreachable message to the source of packet. This is the default behavior.
> df-ignore
> Default: Disabled
> Ignores the DF (Don’t Fragment) bit setting; fragments and forwards the packet over the access link.
> df-fragment-and-icmp-notify
> Default: Disabled
> Partially ignorse the DF bit; fragments and forwards the packet, but also returns an ICMP error message to the source of the packet. The number of ICMP errors sent like this is rate-limited to one ICMP error packet per second per session.
> Usage
> If the IP packet to be forwarded is larger than the access-link MTU and if the DF (Don't Fragment) bit is set for the packet, then the fragmentation behavior configured by this command is applied. Use this command to fragment packets even if they are larger than the access-link MTU.
> Fragmentation may also occur for other reasons, regardless of whether or not fragmentation is performed because of one of the above reasons.
> Payloads are encapsulated within IP/UDP/GTP before being sent to the SGSN. If that encapsulation causes the packet to exceed 1500 bytes, the inner IP payload is fragmented (even if it's not considered too-large by the above tests) into two payloads (if the DF bit is not set). If the DF bit is set (and access-link ip-fragmentation normal is configured), the system performs IP fragmentation of the entire packet (i.e., IP fragmentation in the outer IP header) rather than fragmenting the inner IP payload. Either way, the result is two packets, but in one case the MS would have to perform IP reassembly while in the other case the SGSN would have to perform reassembly.
> Example
> Set fragmentation so that the DF bit is ignored and the packet is forwarded anyway by entering the following command:
> access-link ip-fragmentation df-ignore
> accounting-mode
> Configures the protocol to be used for PDP context accounting by this APN.
> Product
> GGSN, ECS, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> accounting-mode { gtpp | none | radius-diameter [ no-interims ] [ no-early-pdus ] }
> default accounting-mode
> default
> Restores the command to its default setting.
> gtpp
> Configures the APN to use GPRS Tunneling Protocol Prime for accounting purposes. If used, accounting will begin as soon as the PDP context is established. This is the default setting. Default: Enabled
> Important: The system’s GTPP parameters must be configured prior to using this protocol for accounting. Refer to the gtpp commands in the Context Configuration Mode Commands chapter.
> none
> Disables accounting for PDP contexts using this APN.
> When accounting mode is set to none, it indicates to the GTP stack at session manager to not generate the regular GTPP accounting triggers. Default: Disabled.
> radius-diameter
> Configures the APN to use RADIUS/Diameter protocol for accounting purposes. Default: Disabled
> Important: The system’s RADIUS/Diameter accounting parameters must be configured prior to using either of the protocols for accounting. Refer to the radius/diameter commands in the Context Configuration Mode Commands and the AAA Server Group Configuration Mode Commands chapters.
> no-early-pdus
> Configures the GGSN to discard user traffic once the buffer is full until the RADIUS server has returned a response to the GGSN's accounting START request per 3GPP standards.
> Configures the GGSN to delay PDUs from/to MS until the RADIUS server returns a response to the GGSN's accounting START request as per 3GPP standards. The GGSN buffers up to two PDUs per call. Additional PDUs disable the queuing. On receiving the Accounting response message, the GGSN forwards all the subsequent PDUs for that call.
> Important: For StarOS 10.0 and earlier releases, the system buffers up to four PDUs and queues or discards the remaining PDUs.
> Important: For StarOS 11.0 and later releases, the system is configured so that none of the PDUs are discarded.
> no-interims
> Disables the generation of RADIUS interims per APN.
> When configured, RADIUS interim updates for this APN will not be sent, regardless of what is configured in the context that is used for RADIUS accounting.
> Important: Different CLI commands are used to disable RADIUS interims for RADIUS accounting and mediation accounting. To disable RADIUS interims for RADIUS accounting, use the following command: accounting-mode radius-diameter no-interims. To disable RADIUS interims for mediation accounting, use the following command: mediation-device context-name context_name no-interims.
> Usage
> This command specifies which protocol, if any, will be used to provide accounting for PDP contexts accessing the APN profile.
> When the GTPP protocol is used, accounting messages are sent to the charging gateways (CGs) over the Ga interface. The Ga interface and GTPP functionality are typically configured within the system’s source context. As specified by the standards, a CDR is not generated when a session starts - CDRs are generated according to the interim triggers (configured using the cc command in the GGSN service configuration mode) and a CDR is generated when the session ends. For interim accounting, STOP/START pairs are sent based on configured triggers.
> GTPP version 2 is always used. However, if version 2 is not supported by the CGF, the system reverts to using GTPP version 1. All subsequent CDRs are always fully-qualified partial CDRs. All CDR fields are R4.
> If the radius-diameter option is used, either the RADIUS or the Diameter protocol is used as configured in the Context Configuration mode or the AAA Server Group Configuration mode.
> If the RADIUS protocol is used, accounting messages can be sent over a AAA interface or the Gi to the RADIUS server. The AAA or Gi interface(s) and RADIUS functionality are typically configured with the system’s destination context along with the APN. RADIUS accounting begins immediately after an IP address is allocated for the MS. Interim accounting can be configured using the radius accounting interim interval. The radius accounting interim interval command sends INTERIM-UPDATE messages at specific intervals.
> Keywords to this command can be used in combination to each other, depending on configuration requirements.
> Important: If the accounting type in the APN is set to ‘none’ then G-CDRs will not be generated. If accounting type is left as default “GTPP” and “billing-records” are configured in the ACS Rulebase Configuration Mode, then both G-CDRs and eG-CDRs would be generated.
> Example
> The following command configures the APN to use the RADIUS/Diameter protocol for accounting:
> accounting-mode radius-diameter
> accounting-mode radius-diameter no-interims no-early-pdus
> accounting-mode radius-diameter no-early-pdus no-interims
> active-charging bandwidth-policy
> Configures the bandwidth policy to be used for subscribers who use this APN.
> Product
> GGSN, ECS
> Privilege
> Security Administrator, Administrator
> Syntax
> active-charging bandwidth-policy bandwidth_policy_name
> [ default | no ] active-charging bandwidth-policy
> default
> Configures the default setting.
> Default: The default bandwidth policy configured in the rulebase is used for subscribers who use this APN.
> no
> Disables bandwidth control for the APN.
> bandwidth-policy bandwidth_policy_name
> Specifies the bandwidth policy name. bandwidth_policy_name must be an alphanumeric string from 1 through 63 characters.
> Usage
> Use this command to configure bandwidth policy to be used for subscribers who use this APN.
> Example
> The following command configures a bandwidth policy named standard for the APN:
> active-charging bandwidth-policy standard
> active-charging link-monitor tcp
> Enables the TCP link monitoring feature on the Mobile Video Gateway. This command can be configured in either APN Configuration Mode or Subscriber Configuration Mode.
> Product
> MVG
> Privilege
> Security Administrator, Administrator
> Syntax
> [ default | no ] active-charging link-monitor tcp [ log [ rtt [ histogram | time-series ] [ bitrate [ histogram | time-series ] ] | bitrate [ histogram | time-series ] [ rtt [ histogram | time-series ] ] ] ] [ -noconfirm ]
> default
> Sets TCP link monitoring to its default value, which is the same as no.
> no
> Deletes the TCP link monitoring settings and disables TCP link monitoring if previously configured.
> link-monitor tcp
> Enables the TCP link monitoring feature on the Mobile Video Gateway. Note that TCP link monitoring is not enabled by default. Also note that when this command is configured without the log option, TCP link monitoring is enabled without logging, and the output from TCP link monitoring is only used by the dynamic translating feature.
> log [ rtt [ histogram | time-series ] [ bitrate [ histogram | time-series ] ] | bitrate [ histogram | time-series ] [ rtt [ histogram | time-series ] ] ]
> This option enables statistical logging for TCP link monitoring.
> The rtt option can be used to enable either histogram or time-series logging for RTT.
> Similarly, the bitrate option can be used to enable either histogram or time-series logging for bit rate.
> When rtt and bitrate options are used without additional options, histogram and time-series logging are enabled for RTT and/or bit rate respectively.
> -noconfirm
> Specifies that the command must execute without prompting for confirmation.
> Usage
> Use this command to enable TCP link monitoring on the Mobile Video Gateway.
> Examples
> The following command enables TCP link monitoring with statistical logging, with histogram and time-series logging enabled for both RTT and bit rate:
> active-charging link-monitor tcp log
> The following command enables TCP link monitoring with statistical logging, with histogram and time-series logging enabled for RTT:
> active-charging link-monitor tcp log rtt
> The following command enables TCP link monitoring with statistical logging, with histogram logging enabled for RTT:
> active-charging link-monitor tcp log rtt histogram
> The following command enables TCP link monitoring with statistical logging, with histogram logging enabled for RTT and time-series logging enabled for bit rate:
> active-charging link-monitor tcp log rtt histogram bitrate time-series
> active-charging rulebase
> Specifies the name of the Active Charging Service (ACS) rulebase to be used for subscribers who use this APN.
> Product
> GGSN, ECS, P-GW, MVG
> Privilege
> Security Administrator, Administrator
> Syntax
> active-charging rulebase rulebase_name
> no active-charging rulebase
> no
> Removes the rulebase previously configured for this APN.
> rulebase_name
> Specifies the name of the ACS rulebase as an alphanumeric string of 1 through 63 characters.
> Usage
> Use this command to specify the ACS rulebase to be used for subscribers who use the APN.
> Example
> The following command specifies the ACS rulebase named rule1 for the APN:
> active-charging rulebase rule1
> apn-ambr
> Configures the Aggregated Maximum Bit Rate (AMBR) for all PDNs using this APN.
> Product
> P-GW
> Privilege
> Administrator
> Syntax
> apn-ambr rate-limit direction { downlink | uplink } [ burst-size { auto-readjust duration seconds | bytes } | violate-action { drop | lower-ip-precedence | shape [ transmit-when-buffer-full ] | transmit } ]
> [ default | no ] apn-ambr rate-limit direction { downlink | uplink }
> default
> Returns the selected command to it’s default setting of no APN-AMBR.
> no
> Disables the selected command.
> rate-limit direction { downlink | uplink }
> Specifies that the rate limit is to be applied to either the downlink (network to subscriber) traffic or the uplink (subscriber to network) traffic.
> downlink: Applies the AMBR parameters to the downlink direction.
> uplink: Applies the AMBR parameters to the uplink direction.
> burst-size { auto-readjust duration seconds | bytes}
> This parameter is used by policing and shaping algorithms to permit short bursts of traffic in order to not exceed the allowed data rates. It is the maximum size of the token bucket.
> auto-readjust duration seconds: The duration (in seconds) used in this burst size calculation: burst size = peak data rate/8 * auto-readjust duration
> seconds must be an integer value from 1 to 30. Default is 1 second
> bytes: Specifies the burst size in bytes allowed by this APN for the associated PDNs. It must be an integer from 1 to 4294967295 (1 byte to 4 GB).
> violate-action { drop | lower-ip-precedence | shape [ transmit-when-buffer-full ] | transmit }
> The action that the P-GW will take when the data rate of the bearer context exceeds the AMBR.
> drop: Drops violating packets.
> lower-ip-precedence: Sets the DSCP value to zero (“best effort”) for violating packets.
> shape [ transmit-when-buffer-full ]: Places all violating packets into a buffer and, optionally, transmits the packets when the buffer is full.
> Important: The shape keyword and optional transmit-when-buffer-full are only available in StarOS v12.0 and earlier releases. P-GW does not currently support traffic shaping for APN-AMBR.
> transmit: Transmits violating packets. This is the default setting.
> Usage
> Use this command to enforce the AMBR for the APN on bearers that do not have a Guaranteed Bit Rate (GBR).
> Example
> The following command sets the downlink burst rate to use an auto-readjust duration of 2 seconds and lowers the IP precedence of violating packets:
> apn-ambr rate-limit direction downlink burst-size auto-readjust duration 2 violate-action lower-ip-precedence
> associate accounting-policy
> Associates the APN with specific pre-configured policies configured in the same context.
> Product
> P-GW
> Privilege
> Administrator
> Syntax
> [ no ] associate accounting-policy name
> no
> Removes the selected association from this APN.
> name
> Associates the P-GW APN with an accounting policy configured in the same context. name must be an existing accounting policy expressed as a string of 1 through 63 characters.
> Accounting policies are configured through the policy accounting command in the Context Configuration mode.
> Usage
> Use this command to associate the P-GW APN with an accounting policy configured in this context.
> Example
> The following command associates this P-GW APN with an accounting policy called acct1:
> associate accounting-policy acct1
> authentication
> Configures the APN’s authentication parameters.
> Product
> GGSN, P-GW, PDG
> Privilege
> Security Administrator, Administrator
> Syntax
> authentication [ [ msid-auth | imsi-auth [ password-use-pco | username-strip-apn | prefer-chap-pco ] | msisdn-auth [ password-use-pco | username-strip-apn | prefer-chap-pco ] | eap initial-access-request [ authenticate-authorize | authenticate-only ] | [ allow-noauth ] [ chap preference [ convert-to-mschap ] ] [ mschap preference ] [ pap preference ] ]
> default authentication
> default
> Sets the default authentication type for this APN. By default allow-noauth is the type for authentication for an APN.
> msid-auth
> Obsolete. Use imsi-auth.
> imsi-auth
> Default: Disabled.
> Configures the APN to attempt to authenticate the subscriber based on their International Mobile Subscriber Identification (IMSI) number.
> msisdn-auth
> Default: Disabled.
> Configures the APN to attempt to authenticate the subscriber based on their Mobile Station International Integrated Services Digital Network (MSISDN) number as described in the Usage section of this command.
> username-strip-apn
> Default: Disabled.
> This keyword if enabled, either with msisdn-auth or imsi-auth strips the APN name from the user name msisdn@apn or imsi@apn received from AAA and makes the user name as msisdn or imsi respectively.
> password-use-pco
> Default: Disabled.
> This keyword, if enabled, uses the password received through Protocol Configuration Options (PCO) from AAA for authentication.
> prefer-chap-pco
> Default: Disabled.
> If this keyword along with msisdn-auth/imsi-auth is enabled, GGSN performs Challenge Handshake Authentication Protocol (CHAP) authentication, if CHAP parameters are received in Protocol Configuration Options (PCO). However, chap username would be constructed as msisdn@apn / imsi@apn and chap challenge, chap response parameters should be used as it is from CHAP parameters received in the PCO IE. If CHAP parameters are not received in the PCO IE of the CPC Request, GGSN does normal Password Authentication Protocol (PAP) authentication with PAP username as msisdn@apn / imsi@apn (ignoring any PAP username if received).
> eap initial-access-request
> Default: Enabled
> Configures the type of initial access request to be used in Diameter EAP (Extensible Authentication Protocol) request. This feature is applicable to only Diameter-based AAA interface and not applicable to RADIUS or any other type of AAA interface.
> authenticate-authorize
> Default: Enabled
> Configures the “authenticate and authorize” type of initial access request to be used in a Diameter EAP request.
> authenticate-only
> Default: Disabled
> Configures the “authenticate only” type of initial access request to be used in a Diameter EAP request.
> allow-noauth
> Default: Enabled
> Configures the APN to not perform authentication for PDP contexts as described in the Usage section.
> chap preference
> Default: Disabled
> Configures the APN to attempt to use CHAP to authenticate the subscriber as described in the Usage section of this command.
> A preference must be specified in conjunction with this option. Priorities specify which authentication protocol should be attempted first, second, third and so on. It must be an integer from 1 through 1000. The lower the integer, the higher the preference.
> convert-to-mschap
> Default: Disabled
> If enabled, the CHAP parameters received with the length of 49 bytes, the AAAmgr converts it to MSCHAP.
> mschap preference
> Default: Disabled
> Configures the APN to attempt to use the Microsoft Challenge Handshake Authentication Protocol (MSCHAP) to authenticate the subscriber as described in the Usage section of this command.
> A preference can be specified in conjunction with this option. Priorities specify which authentication protocol should be attempted first, second, third and so on. It must be an integer from 1 through 1000. The lower the integer, the higher the preference.
> pap preference
> Default: Disabled
> Configures the APN to attempt to use PAP to authenticate the subscriber as described in the Usage section of this command.
> A preference must be specified in conjunction with this option. Priorities specify which authentication protocol should be attempted first, second, third and so on. It must be an integer from 1 through 1000. The lower the integer, the higher the preference.
> Usage
> Use this command to specify how the APN profile should handle PDP context authentication and what protocols to use (if any). The ability to configure this option is provided to accommodate the fact that not every MS will implement the same authentication protocols.
> The authentication process varies depending on whether the PDP context is of type IP or PPP. Table given in this section describes these differences.
> For IP PDP contexts, the authentication protocol and values will be passed from the SGSN as Protocol Configuration Options (PCOs) within the create PDP context PDU to the GGSN. The GGSN requires that the authentication protocol is specified by this command (with no regard to priority) and will use this information to authenticate the subscriber.
> Authentication Process Variances Between PDP Context Type

> Authentication Mechanism | IP PDP Context Behavior | PPP PDP Context Behavior
> allow-noauth | Allows the session even if the PCOs do not match any of the configured algorithms. If the there was no match and the aaa constructed-nai authentication parameter is enabled in the authentication context, the system attempts to determine a subscriber profile (via PAP with no password) using the subscriber’s MSISDN as the username. | Allows the session with no authentication algorithm selected. If the aaa constructed-nai authentication parameter is enabled in the authentication context, the system attempts to determine a subscriber profile (via PAP with no password) using the subscriber’s MSISDN as the username.
> chap | If also specified in the PCOs, this protocol will be used to authenticate the subscriber. | Attempts this protocol according to its configured priority. If accepted by the remote end of the PPP connection, this protocol will be used to provide authentication.
> mschap | If also specified in the PCOs, this protocol will be used to authenticate the subscriber. | Attempts this protocol according to its configured priority. If accepted by the remote end of the PPP connection, this protocol will be used to provide authentication.
> pap | If also specified in the PCOs, this protocol will be used to authenticate the subscriber. If this protocol is used is specified and the allow-noauth parameter is disabled, the system will attempt to use the APN’s default username/password specified by the outbound command for authentication via PAP. | Attempts this protocol according to its configured priority. If accepted by the remote end of the PPP connection, this protocol will be used to provide authentication.
> msid-auth | Obsolete. Use imsi-auth. | Obsolete. Use imsi-auth.
> imsi-auth | Values in the PCOs are ignored. The subscriber’s IMSI is used as the username for PAP authentication. No password is used. | The subscriber’s IMSI is used as the username for PAP authentication. No password is used.
> msisdn-auth | Values in the PCOs are ignored. The subscriber’s MSISDN is used as the username for PAP authentication. No password is used. | Option not available.

> ‌
> Example
> The following command would configure the system to attempt subscriber authentication first using MSCHAP, then CHAP, and finally PAP. Since the allow-noauth command was also issued, if all attempts to authenticate the subscriber using these protocols fail, then the subscriber would be still be allowed access.
> authentication mschap 1 chap 2 pap 3 allow-noauth
> To enable imsi-auth or msisdn-auth, the following command instances must be issued:
> authentication imsi-auth
> authentication msisdn-auth
> bearer-control-mode
> Enables or disables the bearer control mode for network controlled QoS (NCQoS) through this APN. It also controls the sending of an IE in GTP messages.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> bearer-control-mode [ mixed | ms-only | none [ prefer-local-value ] ]
> default bearer-control-mode
> default
> Sets the bearer control mode to default mode of “none”.
> mixed
> Default: Disabled.
> This keyword indicates that the bearer will be controlled by User Equipment (UE) and network side (from GGSN) as well.
> To enable network controlled QoS this option must be enabled.
> ms-only
> Default: Disabled.
> This keyword indicates that the bearer will be controlled by the UE side.
> none
> Default: Enabled.
> This keyword indicates that the system will not send any BCM mode information, BCM IE and BCM information in the protocol configuration option (PCO) IE within GTPC messages sent by the GGSN. This option is useful in networks where AGWs or firewalls do not support unknown optional IEs in GTP messages.
> prefer-local-value
> Default: Disabled.
> This keyword indicates that the APN configured with “none” option for bearer control mode will not be overridden by any other interface (e.g. Gx interface towards PCRF). As a result it is ensured that BCM IE is never sent in GTP message.
> Important: When bearer control mode is set to “none” with the keyword set “prefer-local-value”, even PCRF provided values will not override APN config and therefore sending of BCM mode IE and BCM in PCO IE in CPC Response is supressed.
> Usage
> Use this command to enable the QoS through bearer control. This can be done either through the MS side or from both the GGSN and MS. To enable network requested QoS user need to enable “Mixed” mode for bearer control.
> With this keyword the operator can control sending of BCM information in GTPC messages from the GGSN.
> With MS-Only or Mixed options in this mode, the system sends the BCM information element in every Create PDP Context Response and Unknown PDP Context Request and Response message.
> In some networks AGWs/Firewall drop/reject GTPC messages if there is an Unknown optional IE. To resolve this, the operator can use the “none” option to control sending of BCM IE and BCM information in the PCO IE within GTPC messages from the GGSN.
> Example
> The following command enables the bearer control from network and MS side for NCQoS.
> bearer-control-mode mixed
> cc-home
> Configures the home subscriber charging characteristics (CC) used by the GGSN when those from the SGSN will not be accepted.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> cc-home { behavior bits | profile index }
> default cc-home
> default
> Restores the cc-home parameter to its default setting of the following:

> • | behavior bits: 0x00

> • | profile index: 8

> behavior bits
> Specifies the behavior bit for the home subscriber charging characteristic. bits can be configured to any unique bit from 001H to FFFH (0001 to 1111 1111 1111 bin) where the least-significant bit corresponds to B1 and the most-significant bit corresponds to B12.
> profile index
> Specifies the profile index for the home subscriber charging characteristic. index can be configured to any integer value between 0 and 15. Default: 8
> Important: 3GPP standards suggest that profile index values of 1, 2, 4, and 8 be used for hot billing, flat rate billing, prepaid billing and normal billing, respectively. A single charging characteristics profile can contain multiple behavior settings.
> Usage
> When the GGSN is configured to reject the charging characteristics sent by the SGSN for “home” subscribers, it uses the profile index specified by this command to determine the appropriate CCs to use.
> Multiple behavior bits can be configured for a single profile index by ORing the bit strings together and converting the result to hexadecimal.
> The properties of the actual CC profile index are configured as part of the GGSN service using the cc profile command. Refer to the GGSN Service Configuration Mode chapter of this reference for additional information on this command.
> Example
> The following command configures a behavior bit of 2 (0000 0000 0010) and a profile index of 10 for home subscribers charging characteristics:
> cc-home behavior 2 profile 10
> The following command configures the behavior bits 3 (0000 0000 0100) and 5 (0000 0001 0000 bin) and a profile index of 14 for home subscriber charging characteristics:
> cc-home behavior 14 profile 14
> cc-roaming
> Configures the roaming subscriber charging characteristics (CC) used by the GGSN when those from the SGSN will not be accepted.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> cc-roaming { behavior bits | profile index }
> default cc-roaming
> default
> Restores the cc-roaming parameter to its default setting of the following:

> • | behavior bits: 0x00

> • | profile index: 8

> behavior bits
> Specifies the behavior bit for the roaming subscriber charging characteristic. bits can be configured to any unique bit from 001H to FFFH (0001 to 1111 1111 1111 bin) where the least-significant bit corresponds to B1 and the most-significant bit corresponds to B12.
> profile index
> Specifies the profile index for the roaming subscriber charging characteristic. index can be configured to any integer value between 0 and 15. Default: 8
> Important: 3GPP standards suggest that profile index values of 1, 2, 4, and 8 be used for hot billing, flat rate billing, prepaid billing and normal billing, respectively. A single charging characteristics profile can contain multiple behavior settings.
> Usage
> When the GGSN is configured to reject the charging characteristics sent by the SGSN for “roaming” subscribers, it uses the profile index specified by this command to determine the appropriate CCs to use.
> Multiple behavior bits can be configured for a single profile index by ORing the bit strings together and convert the result to hexadecimal.
> The properties of the actual CC profile index are configured as part of the GGSN service using the cc profile command. Refer to the GGSN Service Configuration Mode chapter of this reference for additional information on this command.
> Example
> The following command configures a behavior bit 10 (0010 0000 0000) and a profile index of 10 for roaming subscriber charging characteristics:
> cc-roaming behavior 200 profile 10
> The following command configures the behavior bits 9 (0001 0000 0000) and 6 (0000 0010 0000) and a profile index of 14 for roaming subscriber charging characteristics:
> cc-roaming behavior 120 profile 14
> cc-sgsn
> Specifies the GGSN’s source for charging characteristics (CC) - those configured locally or those received from the SGSN.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> cc-sgsn { home-subscriber-use-GGSN | radius-returned | roaming-subscriber-use-GGSN | visiting-subscriber-use-GGSN } +
> cc-sgsn { use-GGSN behavior bits profile index[ 0...15 ] [ radius-returned ] }
> default cc-sgsn
> no cc-sgsn { { radius-returned | home-subscriber-use-GGSN | roaming-subscriber-use-GGSN | visiting-subscriber-use-GGSN } + | [ use-GGSN ] [ radius-returned ] }
> default cc-sgsn
> Restores the cc-sgsn parameter to its default setting of the following:

> • | home-subscriber-use-GGSN: Disabled

> • | roaming-subscriber-use-GGSN: Disabled

> • | visiting-subscriber-use-GGSN: Disabled

> no cc-sgsn
> Causes the GGSN to accept CCs from the SGSN(s) when the no cc-sgsn command is entered with all applicable keywords. Otherwise, no cc-sgsn can be used to turn off one or more of the GGSN sources of CC.

> • | roaming-subscriber-use-GGSN

> • | home-subscriber-use-GGSN

> • | roaming-subscriber-use-GGSN

> • | visiting-subscriber-use-GGSN

> Before entering no cc-sgsn, it is helpful to determine which CC sources have been configured. This can be done with either show configuration or show apn name in Exec Mode.
> home-subscriber-use-GGSN
> Configures the GGSN to use the locally defined charging characteristics for home subscribers, as configured with the APN Configuration Mode cc-home command.
> radius-returned
> Configures the GGSN to accept charging characteristics returned from the RADIUS server for all subscribers for the APN.
> roaming-subscriber-use-GGSN
> Configures the GGSN to use the locally defined charging characteristics for roaming subscribers, as configured with the APN Configuration Mode cc-roaming command.
> visiting-subscriber-use-GGSN
> Configures the GGSN to use the locally defined charging characteristics for visiting subscribers, as configured with the APN Configuration Mode cc-visiting command.
> use-GGSN [ behavior bits ] profile index[ 0...15 ]
> Configures the GGSN to accept charging characteristics for all subscribers in the APN.
> bits specifies the behavior bit for the charging characteristic. This variable can be configured to any unique bit from 001H to FFFH (0001 to 1111 1111 1111 bin) where the least-significant bit corresponds to B1 and the most-significant bit corresponds to B12.
> index indicates which profile defined with cc profile in GGSN Service Configuration mode, the GGSN will use as a source for CCs. The index can be configured to an integer from 0 to 15.
> The use-GGSN keyword can be entered alone or in conjunction with the radius-returned keyword. When entered, this keyword overrides the previous configuration using any of the home, roaming, and/or visiting keywords.
> +
> More than one of the above keywords can be entered within a single command.
> Usage
> This command specifies whether or not CCs received from the SGSN will be accepted. If they are not accepted, the GGSN will use those that have been configured locally.
> The GGSN’s behavior can be configured for the following subscriber types:

> • | Home: Subscribers belonging to the same Public Land Mobile Network (PLMN) as the one on which the GGSN is located.

> • | Roaming: Subscribers that are serviced by a an SGSN belonging to a different PLMN than the one on which the GGSN is located.

> • | Visiting: Subscribers belonging to a different PLMN than the one on which the GGSN is located.

> • | Any subscriber in the APN.

> Example
> The following command instructs the GGSN to accept CCs for any subscriber in the APN based on local profile configurations of CCs.
> cc-sgsn use-GGSN profile x
> Assuming the CC source as defined with the previous command, the following command instructs the GGSN to accept CCs supplied by the SGSN(s) and disables the acceptance of CCs supplied by the GGSN for any subscriber within the APN:
> no cc-sgsn use-GGSN
> The following command instructs the GGSN to accept CCs for any subscriber in the APN based on CC information returned from the RADIUS server. This command can be issued after the previous command to expand the possible sources.
> cc-sgsn radius-returned
> The following command disables the acceptance of CCs supplied by the GGSN for visiting and roaming subscribers:
> no cc-sgsn roaming-subscriber-use-GGSN visiting-subscriber-use-GGSN
> cc-visiting
> Configures the visiting subscriber charging characteristics (CC) used by the GGSN when those from the SGSN will not be accepted.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> cc-visiting behavior bits profile index
> default cc-visiting
> default
> Restores the cc-visiting parameter to its default setting of the following:

> • | behavior bits: 0x00

> • | profile index: 8

> behavior bits
> Specifies the behavior bit for the visiting subscriber charging characteristic. bits can be configured to any unique bit from 001H to FFFH (0001 to 1111 1111 1111 bin) where the least-significant bit corresponds to B1 and the most-significant bit corresponds to B12.
> profile index
> Specifies the profile index for the visiting subscriber charging characteristic. index can be configured to any integer value between 0 and 15. Default: 8
> Important: 3GPP standards suggest that profile index values of 1, 2, 4, and 8 be used for hot billing, flat rate billing, prepaid billing and normal billing, respectively. A single charging characteristics profile can contain multiple behavior settings.
> Usage
> When the GGSN is configured to reject the charging characteristics sent by the SGSN for “visiting” subscribers, it uses the profile index specified by this command to determine the appropriate CCs to use.
> Multiple behavior bits can be configured for a single profile index by ORing the bit strings together and convert the result to hexadecimal.
> The properties of the actual CC profile index are configured as part of the GGSN service using the cc profile command. Refer to the GGSN Service Configuration Mode chapter of this reference for additional information on this command.
> Example
> The following command configures a behavior bit 7 (0000 0100 0000) and a profile index of 10 for visiting subscriber charging characteristics:
> cc-visiting behavior 40 profile 10
> The following command configures the behavior bits 1 (0000 0000 0001) and 12 (1000 0000 0000) and a profile index of 14 for visiting subscriber charging characteristics:
> cc-visiting behavior 801 profile 14
> content-filtering category
> Enables or disables the specified pre-configured Category Policy Identifier for Category-based Content Filtering support.
> Product
> CF
> Privilege
> Security Administrator, Administrator
> Syntax
> content-filtering category policy-id cf_policy_id
> no content-filtering category policy-id
> no
> Disables the previously configured category policy identifier for Content Filtering support to the APN. This is the default setting.
> policy-id cf_policy_id
> Applies the specified content filtering category policy ID, configured in the ACS Configuration Mode, to this APN.
> cf_policy_id must be a category policy ID entered as an integer from 1 through 4294967295.
> If the specified category policy ID is not configured in the ACS Configuration Mode, all packets will be passed regardless of the categories determined for such packets.
> Important: Category Policy ID configured through this mode overrides the Category Policy ID configured through content-filtering category policy-id command in the ACS Rulebase Configuration Mode.
> Usage
> Use this command to enter the Content Filtering Policy Configuration Mode and to enable or disable the Content Filtering Category Policy ID for an APN.
> Important: If Content Filtering Category Policy ID is not specified here the similar command in the ACS Rulebase Configuration Mode determines the policy.
> Up to 64 different policy IDs can be defined.
> Example
> The following command enters the Content Filtering Policy Configuration Mode and enables the Category Policy ID 101 for Content Filtering support:
> content-filtering category policy-id 101
> credit-control-group
> Configures the credit control group to be used for subscribers who use this APN.
> Product
> GGSN, ECS, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> credit-control-group cc_group_name
> no credit-control-group
> no
> Removes the previously configured credit control group from the APN configuration.
> cc_group_name
> Specifies name of the credit control group as an alphanumeric string of 1 through 63 characters.
> Usage
> Use this command to configure the credit control group for this APN.
> Creating different credit control groups enables applying different credit control configurations (DCCA dictionary, failure-handling, session-failover, Diameter endpoint selection, etc.) to different subscribers on the same system.
> Without credit control groups, only one credit control configuration is possible on a system. All the subscribers in the system will have to use the same configuration.
> Example
> The following command configures a credit control group named testgroup12 for the current APN:
> credit-control-group testgroup12
> data-tunnel mtu
> Configures the Maximum Transmission Unit (MTU) for data sent on the IPv6 tunnel between the P-GW and the mobile node.
> Product
> P-GW
> Privilege
> Administrator
> Syntax
> data-tunnel mtu bytes
> default data-tunnel mtu
> default
> Returns the command to the default value of 1500.
> bytes
> Specifies the MTU for the IPv6 tunnel between the P-GW and the mobile node. bytes must be an integer between 1280 and 2000. Default: 1500
> Usage
> Use this command to set the MTU for data traffic on the IPv6 tunnel between the P-GW and the mobile node.
> Example
> The following command sets the MTU for IPv6 data traffic to 1400 bytes:
> data-tunnel mtu 1400
> data-tunneling ignore df-bit
> Controls the handling of the DF (Don't Fragment) bit present in the user IPv4/IPv6 packet for tunneling used for the Mobile IP data path.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> [ default | no ] data-tunneling ignore df-bit
> default
> Restores the data-tunneling parameter to its default setting of disabled.
> no
> Disables this option. The DF bit in the tunneled IP packet header is not ignored during tunneling. This is the default setting.
> ignore df-bit
> Ignores the DF bit in the tunneled IP packet header during tunneling. This is the default setting.
> Usage
> Use this command to configure a user so that during Mobile IP tunneling the DF bit is ignored and packets are fragmented.
> If this feature is enabled, and fragmentation is required for the tunneled user IPv4/IPv6 packet, then the DF bit is ignored and the packet is fragmented. Also the DF bit is not copied to the outer header.
> In the GGSN, this command also affects the other L3 tunneling options, IP-in-IP and GRE, but does not affect L2TP tunneling.
> Example
> To enable fragmentation of a subscribers packets over a MIP tunnel even when the DF bit is present, enter the following command:
> data-tunneling ignore df-bit
> dcca origin endpoint
> This command is obsolete. To configure the Diameter Credit Control Origin Endpoint, in the Credit Control Configuration Mode, use the diameter origin endpoint command.
> dcca peer-select
> Specifies the Diameter credit control primary and secondary host for credit control.
> Product
> GGSN, ECS, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> dcca peer-select peer host_name [ realm realm_name ] [ secondary-peer host_name ]
> no dcca peer-select
> no
> Removes the previously configured Diameter credit control peer selection.
> host_name
> Specifies a unique name for the peer as an alphanumeric string of 1 through 63 characters that allows punctuation marks.
> realm realm_name
> Specifies the ream as an alphanumeric string of from 1 through 127 characters that allows punctuation marks. The realm may typically be a company or service name.
> secondary-peer host_name
> Specifies a back-up host that is used for fail-over processing as an alphanumeric string of from 1 through 63 characters. When the route-table does not find an AVAILABLE route, the secondary host performs fail-over processing.
> Usage
> Use this command to select a Diameter credit control peer and realm.
> Warning: This configuration completely overrides all instances of diameter peer-select that have been configured within the Credit Control Configuration Mode for an Active Charging Service.
> Example
> The following command selects a Diameter credit control peer named test and a realm of companyx:
> dcca peer-select test realm companyx
> dhcp context-name
> Configures the name of the context on the system in which Dynamic Host Control Protocol (DHCP) functionality is configured.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> [ no ] dhcp context-name name
> no
> Removes a previously configured context name.
> name
> Specifies the name of a context configured on the system in which one or more DHCP services are configured. name is an alphanumeric string of 1 through 79 characters that is case sensitive.
> Usage
> If the APN is to support dynamic address assignment via DHCP (either the proxy or relay mode), this parameter must be configured to point the APN to the name of a pre-configured context on the chassis in which one or more DHCP services are configured.
> The command can be used to identify a single DHCP service instance within the specified context to use to facilitate the address assignment.
> Example
> The following command configures the APN to look for DHCP services in a context called dhcp-ctx:
> dhcp context-name dhcp-ctx
> dhcp lease-expiration-policy
> Configures the system’s handling of PDP contexts whose DHCP assigned IP lease has expired.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> dhcp lease-expiration-policy { auto-renew | disconnect }
> default dhcp lease-expiration-policy
> default
> Restores the dhcp lease-expiration-policy parameter to its default setting of auto-renew.
> auto-renew
> Configures the system to automatically renew an IP address’ lease when it is about to expire for PDP contexts facilitated by the APN. Default: Enabled
> disconnect
> Configures the system to automatically release the PDP context when the lease for the IP address associated with that context expires. Default: Disabled
> Usage
> Use this command to specify the action the system is to take when leases for IP addresses for PDP contexts that it are currently facilitated by the current APN are about to expire.
> Example
> The following command causes the system to release PDP contexts associated with the current APN when the lease for their DHCP-assigned IP address expires:
> dhcp lease-expiration-policy disconnect
> dhcp service-name
> Configures the name of a specific DHCP service to use when dynamically assigning IP addresses to PDP contexts using the Dynamic Host Control Protocol.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> [ no ] dhcp service-name svc_name
> no
> Removes a previously configured DHCP service name.
> svc_name
> Configures the name of the DHCP service instance that is to be used by the current APN for the dynamic assignment of IP addresses to PDP contexts. The name can be an alphanumeric string of 1 through 63 characters that is case sensitive.
> Usage
> Use this command to specify a pre-configured DHCP service instance that is to be used by the APN for IP address assignment when the Dynamic Host Control Protocol is used.
> The name of the context in which the desired DHCP service is configured must be specified by the dhcp context-name command.
> Example
> The following command instructs the APN to use a DHCP service called dhcp1:
> dhcp service-name dhcp1
> dns
> Configures the Domain Name Service (DNS) servers that will be used by the APN for PPP.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> dns { primary | secondary } { address }
> no dns { primary | secondary } [ dns_address ]
> no
> Deletes a previously configured DNS server.
> primary
> Configures the primary DNS server for the APN.
> secondary
> Configures the secondary DNS server for the APN. Only one secondary DNS server can be configured.
> address
> Configures the IP address of the DNS server expressed in IPv4 dotted-decimal notation.
> Default: primary = 0.0.0.0, secondary = 0.0.0.0
> dns_address
> Specifies the IP address of the DNS server to remove, expressed in IPv4 dotted-decimal notation.
> Usage
> DNS servers are configured on a per-APN profile basis. This allows each APN profile to use specific servers in processing PDP contexts.
> The configured DNS IP addresses are relayed to the subscriber within IPCP if the PDP type is PPP, or as PCOs (Protocol Configuration Options) if the PDP type is IP.
> The DNS can be specified at the APN level in APN configuration as well as at the Context level in Context configuration mode with ip name-servers command, or it can be received from AAA server.
> When DNS is requested in PCO configuration, the following preference will be followed for DNS value:
> 1. DNS Values received from LNS have the first preference.
> 2. DNS values received from RADIUS Server has the second preference.
> 3. DNS values locally configured with APN has the third preference.
> 4. DNS values configured at context level with ip name-servers command has the last preference.
> Important: The same preference would be applicable for the NBNS (NetBIOS Name Service) servers to be negotiated via ICPC (Initial Connection Protocol Control) with the LNS (L2TP Network Server).
> Example
> The following commands configure a primary DNS server address of 192.168.100.3 and a secondary DNS server address of 192.168.100.4:
> dns primary 192.168.100.3
> dns secondary 192.168.100.4
> ehrpd-access
> Configures the P-GW to exclude IPv6 traffic from being delivered to UEs, accessing PDNs from the eHRPD network that do not have IPv6 capabilities.
> Product
> P-GW
> Privilege
> Administrator
> Syntax
> [ default | no ] ehrpd-access drop-ipv6-traffic
> [ default | no ]
> Resets this command to its default setting of disabled.
> drop-ipv6-traffic
> Excludes IPv6 traffic from being delivered to UEs, accessing PDNs from the eHRPD network that do not have IPv6 capabilities.
> Usage
> Use this command to exclude IPv6 traffic from being delivered to UEs on the eHRPD network that do not have IPv6 capabilities.
> emergency-apn
> Configures this APN as an emergency APN for Voice over LTE (VoLTE) based E911 support.
> Product
> P-GW
> Privilege
> Administrator
> Syntax
> [ default | no ] emergency-apn
> [ default | no ]
> Resets this command to its default setting of disabled.
> Usage
> Use this command to configure this APN as an emergency APN for VoLTE based E911 support. With this support, a UE is able to connect to an emergency PDN and make Enhanced 911 (E911) calls while providing the required location information to the Public Safety Access Point (PSAP).
> E911 is a telecommunications-based system that is designed to link people who are experiencing an emergency with the public resources that can help. This feature supports E911-based calls across the LTE and IMS networks. In a voice over LTE scenario, the subscriber attaches to a dedicated packet data network (PDN) called EPDN (Emergency PDN) in order to establish a voice over IP connection to the PSAP. Both signaling and RTP media flow over a dedicated emergency bearer. Additionally, different than normal PDN attachment that relies on AAA and PCRF components for call establishment, the EPDN attributes are configured locally on the P-GW, which eliminates the potential for emergency call failure if either of these systems is not available.
> end
> Exits the current configuration mode and returns to the Exec mode.
> Product
> All
> Privilege
> Security Administrator, Administrator
> Syntax
> end
> Usage
> Use this command to return to the Exec mode.
> exit
> Exits the current mode and returns to the parent configuration mode.
> Product
> All
> Privilege
> Security Administrator, Administrator
> Syntax
> exit
> Usage
> Use this command to return to the parent configuration mode.
> firewall policy
> Eenables or disables Stateful Firewall support for the APN.
> Product
> All
> Privilege
> Security Administrator, Administrator
> Syntax
> firewall policy firewall-required
> [ default | no ] firewall policy
> no
> Disables Stateful Firewall support for this APN.
> default
> Configures the default setting for Stateful Firewall support.
> Default: Disabled
> Usage
> Use this command to enable or disable Stateful Firewall support for this APN.
> Important: This command is only available in StarOS 8.0. In StarOS 8.1 and later, this configuration is available in the ACS Rulebase Configuration Mode.
> Important: Unless Stateful Firewall support for this APN is enabled using this command, firewall processing for this APN is disabled.
> Important: If firewall is enabled, and the rulebase has no firewall configuration, Stateful Firewall will cause all packets to be discarded.
> Example
> The following command enables Stateful Firewall support for an APN:
> firewall policy firewall-required
> The following command disables Stateful Firewall support for an APN:
> no firewall policy
> fw-and-nat policy
> Configures the Firewall-and-NAT policy to be used for subscribers who use this APN.
> Product
> FW, NAT
> Privilege
> Security Administrator, Administrator
> Syntax
> fw-and-nat policy fw_nat_policy
> [ default | no ] fw-and-nat policy
> default
> Configures the default setting.
> Default: The default Firewall-and-NAT policy configured in the rulebase is used for subscribers who use this APN.
> no
> Disables Firewall and NAT for the APN.
> fw_nat_policy
> Specifies the Firewall-and-NAT policy for the APN as an alphanumeric string of 1 through 63 characters. Note that this policy will override the default Firewall-and-NAT policy configured in the ACS rulebase.
> Usage
> Use this command to configure the Firewall-and-NAT policy for the APN. Note that the policy configured in the subscriber mode will override the default policy configured in the ACS rulebase. If a policy is not configured in the subscriber mode, the default policy configured in the ACS rulebase will be used.
> Important: This command is customer-specific and is only available in StarOS 8.1.
> Important: This customer-specific command must be used to configure the Policy-based Firewall-and-NAT feature.
> Example
> The following command configures a Firewall-and-NAT policy named standard for the APN:
> fw-and-nat policy standard
> gsm-qos negotiate
> Enables negotiation of the QoS Reliability Class attribute based on the configuration provided for Service Data Unit (SDU) Error Ratio and Residual Bit Error Ratio (BER) attributes in the APN.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> gsm-qos negotiate sdu-error-ratio sdu-error-ratio-code [ residual-ber residual-ber-code ]
> [ no ] gsm-qos negotiate sdu-error-ratio [ sdu-error-ratio-code [ residual-ber residual-ber-code ] ]
> no
> Disables negotiation of the QoS Reliability Class attribute.
> sdu-error-ratio sdu-error-ratio-code
> Enables the negotiation of the QoS Reliability Class attribute based on Service Data Unit (SDU) Error Ratio attributes. sdu-error-ratio-code corresponds to distinct SDU Error ratio values within an integer range of 1 to 7.
> residual-ber residual-ber-code
> Enables the optional configuration of negotiation of the QoS Reliability Class attribute based on Residual Bit Error Ratio (BER) attributes. residual-ber-code corresponds to distinct Residual Bit Error Ratio values within an integer range of 1 to 9.
> Usage
> This command configures the QoS attribute Reliability Class to be negotiated based on the configuration provided for SDU Error Ratio and Residual BER attributes. The derived Reliability Class and the configured values for SDU Error Ratio and Residual BER are sent back in CPC and UPC response.
> The mapping for sdu-error-ratio-code is as follows:

> Code | Value
> 1 | 10-2
> 2 | 7*10-3
> 3 | 10-3
> 4 | 10-4
> 5 | 10-5
> 6 | 10-6
> 7 | 10-1

> ‌
> Residual BER needs to be specified when SDU Error Ratio is set to codes 1, 2, 3 or 7 (Or, SDU Error Ratio is intended to be set to a value greater than 5*10-4), for determining the Reliability Class QoS attribute. Otherwise, the Residual BER value received in the Create PDP context request QoS (or UPC request) would be used. The mapping for residual-ber-code is as follows:

> Code | Value
> 1 | 5*10-2
> 2 | 10-2
> 3 | 5*10-3
> 4 | 4*10-3
> 5 | 10-3
> 6 | 10-4
> 7 | 10-5
> 8 | 10-6
> 9 | 6*10-8

> ‌
> Example
> The following commands configures the negotiation of QoS attribute Reliability Class based on Service Data Unit (SDU) Error Ratio 3 attributes in the APN:
> gsm-qos negotiate sdu-error-ratio 3
> gtpp group
> Enables a configured GTPP server group to an APN for CGF accounting functionality.
> Important: In Releases prior to 11.0, only one GTPP group is allowed to configure per APN. In Releases 11.0 and later, this CLI can be used to configure up to a maximum of 32 GTPP groups for each APN.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> gtpp group group_name [ accounting-context ac_context_name ]
> default gtpp group
> no gtpp group group_name
> no
> Removes all the configured GTPP groups for the specific APN.
> group_name
> Specifies the name of server group that is used for authentication/accounting for specific APN. group_name must be an alphanumeric string of 1 to 63 characters. It must be identical to the one configured earlier within the same APN context.
> Important: In Release 11.0 and later, if you have mistakenly configured a GTPP group, you should remove the initially configured group and configure the new desired group. However, in Releases prior to 11.0, there is no need to remove the incorrect configuration; instead you can directly reconfigure the desired GTPP group.
> Important: If a GTPP group entry is invalid, this GTPP group will be ignored and the next valid GTPP group in the APN will be used. If no valid GTTP group exists, then the default GTPP group in the accounting context specified by the GGSN service will be used.
> accounting-context ac_context_name
> Specifies the name of an accounting context on the system that processes accounting for PDP contexts handled by this GGSN service for accounting to specific APN.
> ac_context_name must be an alphanumeric string of 1 through 79 characters that is case sensitive.
> Note that if an accounting context is not specified here, the system uses the GGSN service context or the context configured by the accounting context command in the GGSN Service Configuration mode.
> Usage
> This feature provides the GTPP server configurables under a GTPP group node. Instead of having a single list of servers per context, this feature configures multiple server groups within a context and applies individual an GTPP server group for subscribers in that context. Each server group consists of a list of CGF (Charging Group Function) accounting servers.
> In case no GTPP group is applied for the said APN or default APN template, then the default GTPP server group available at the context level is applicable for accounting of a specific APN.
> Important: When multiple GTPP groups are applied to the same APN, the load will be shared across these GTPP groups. Sessions for this APN will use all the configured GTPP groups in a round robin fashion.
> Once a GTPP group is selected for a subscriber session, the GTPP group will never change under any circumstances. A request is initially sent to primary CGF server configured in that group. When the primary fails to respond, the request is sent to secondary CGF server.
> The process of failover from primary to secondary is per the 3GPP standards. Multiple GTPP groups configuration is actually supported only for load sharing of sessions within an APN and not used for failover. When all CGFs are down in a GTPP group, the requests are archived either in hard disk or main memory depending on whether or not streaming is enabled.
> Example
> The following command applies a previously configured GTPP server group named star1 to an APN within the specific context:
> gtpp group star1
> The following command disables the applied GTPP server group for the specific APN:
> no gtpp group star1
> gtpp secondary-group
> Enables or associates a preconfigured secondary GTPP server group to an APN for CGF (Charging Group Function) accounting functionality. By default it is disabled.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> gtpp secondary-group group_name [ accounting-context actt_ctxt_name ]
> [ default | no ] gtpp secondary-group group_name
> default
> Default: Enabled
> Restores the default mode for secondary GTPP group for APN template.
> no
> Disables the configured/associated GTPP secondary group for specific APN.
> group_name
> Specifies the name of secondary GTPP server group that is used as an alternate for the primary GTPP group associated with a specific APN for storage of GTPP messages. group_name must be an alphanumeric string of 1 through 63 characters. It must be the same name as configured earlier within the same APN context.
> accounting-context actt_ctxt_name
> Specifies the name of an accounting context on the system that processes accounting for PDP contexts handled by this GGSN service for accounting to a specific APN.
> actt_ctxt_name specifies the name of the context to be used for accounting as an alphanumeric string of 1 through 79 characters that is case sensitive.
> Note that if an accounting context is not specified here, the system uses the GGSN service context or the context configured by the accounting context command in the GGSN Service Configuration mode.
> Usage
> Use this feature to provide the secondary GTPP server group support for an APN.
> When the secondary GTPP group is configured with this command, the GTPP messages will also be mirrored to the secondary servers.
> This secondary group configuration is ignored, if the configured group_name is the same as the primary group. It will also be ignored, if the configured GTPP group_name and/or accounting context ac_context_name is invalid. In such cases, the call will be established successfully (unlike the primary group configuration where the call drops).
> In the absence of a configured ac_context_name context, the GGSN service context is chosen by default.
> The secondary group messages are low priority and thus are purged when there is no room for the new messages.
> For more information on GTPP group, refer the description of the gtpp group command.
> Example
> The following command applies a previously configured GTPP server group named star2 to as secondary GTPP group to an APN within the specific context:
> gtpp secondary-group star2
> The following command disables the applied secondary GTPP server group for the specific APN:
> no gtpp secondary-group star2
> idle-timeout-activity
> Configures a session idle-timeout to be reset with uplink packets only, or with both uplink and downlink packets.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> [ no ] idle-timeout-activity ignore-downlink
> default idle-timeout-activity
> default
> Sets or restores the command to the default setting.
> ignore-downlink
> Sets the system to ignore the downlink traffic for consideration as activity for idle-timeout.
> Usage
> If idle-timeout-activity ignore-downlink is configured, the downlink (network to subscriber) traffic will not be used to reset the idle-timeout. Only uplink (subscriber to network) packets will be able to reset the idle-timeout.
> By default, ignore-downlink is negated by the no command so downlink traffic is also used to reset the idle-timeout.
> Example
> The following command causes both uplink and downlink traffic to reset a session idle-timeout:
> default idle-timeout-activity
> The following command causes the session idle-timeout to be reset with only uplink packets:
> idle-timeout-activity ignore-downlink
> ims-auth-service
> Applies an IMS (IP Multimedia Subsystem) authorization service to a subscriber through APN for Gx interface support and functionality.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> [ no ] ims-auth-service auth_svc_name
> no
> Disables the applied IMS authorization service for a specific APN.
> auth_svc_name
> Specifies the name of the IMS authorization service name that is used for Gx interface authentication for a specific APN. auth_svc_name must be a alphanumeric string of 1 through 63 characters preconfigured within the same context as this APN.
> Usage
> This feature provides the IMS authorization service configuration for Gx interface in IMS service node.
> Example
> The following command applies a previously configured IMS authorization service named gx_interface1 to an APN within the specific context:
> ims-auth-service gx_interface1
> The following command disables the applied IMS authorization service gx_interface1 for the specific APN:
> no ims-auth-service gx_interface1
> ip access-group
> Configures an IPv4/IPv6 access group for the current APN profile.
> Product
> GGSN, ECS, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> [ no ] ip access-group acl_group_name [ in | out ]
> no
> Removes a previously configured IPv4/IPv6 access group association.
> acl_group_name
> Specifies the name of the IPv4/IPv6 access group. acl_group_name is a previously configured ACL group expressed as an alphanumeric string of 1 to 79 characters.
> in | out
> Default: both (in and out)
> Specifies the access-group as either inbound or outbound by the keywords in and out, respectively.
> Usage
> Use this command to apply a single IPv4/IPv6 access control list to multiple subscribers via this APN for inbound or outbound IPv4/IPv6 traffic.
> If no traffic direction is specified, the selected access control list will be applied to both directions.
> Example
> The following command associates the sampleipv4Group access group with the current APN profile for both inbound and outbound access.
> ip access-group sampleipv4Group
> The following command removes the outbound access group flag for sampleipv4Group.
> no ip access-group sampleipv4Group out
> ip address alloc-method
> Configures the method by which this APN will obtain IP addresses for PDP contexts.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> ip address alloc-method { dhcp-proxy [ allow-deferred ] [ prefer-dhcp-options ] | dhcp-relay | local [ allow-deferred ] | no-dynamic [ allow-deferred ] } [ allow-user-specified ]
> default ip address allocation-method
> default
> Restores the APN ip parameters to the following default settings.
> dhcp-proxy
> Default: Disabled
> Configures the APN to assign an IP address received from a DHCP server.
> Important: If this option is used, the system’s DHCP parameters must be configured.
> dhcp-relay
> Configures the APN to forward DHCP packets received from the MS to a DHCP server. Default: Disabled
> Important: If this option is used, the system’s DHCP parameters must be configured.
> local
> Configures the APN to allocate IP addresses from a pool configured in the destination context on the system. Default: Enabled
> Important: If this option is used, the name of the IP address pool from which to allocate addresses must be configured using the ip address pool-name command. If no pool name is specified, the system will attempt to allocate an address from any public pool configured in the destination context.
> no-dynamic
> Disables the dynamic assignment of IP addresses to PDP contexts using this APN. Default: Disabled
> If a PDP context needing an IP address is received by an APN with this option enabled, it will be rejected with a cause code of 220 (Unknown PDP address or PDP type).
> prefer-dhcp-options
> If this keyword is specified with dhcp-proxy for IP address allocation configuration, the GGSN will prefer DHCP-supplied parameters over values provided by AAA server or by local configuration. This keyword controls the following parameters:

> • | primary and secondary Domain Name Server (DNS) addresses

> • | primary and secondary NetBIOS Name Server (NBNS) addresses

> These values will be sent out in the PCO IE of a GTP Create PDP Response Message whenever the MS Requests them in A Create PDP Request Message.
> Default: Disabled
> Important: This keyword is available only with dhcp-proxy ip allocation method as this functionality is implemented only for GGSN acting as DHCP proxy.
> By default, this functionality is disabled. Hence, DNS and NBNS values received from a DHCP server will not be considered by the GGSN.
> allow-deferred
> Enables support for P-GW deferred address allocation. Default: Disabled
> allow-user-specified
> Enables support for PDP contexts requesting the use of specific (static) addresses. Default: Enabled
> Important: If this option is not enabled, PDP contexts requesting the use of a static address will be rejected with a cause code of 220 (Unknown PDP address or PDP type).
> Usage
> Use this command to configure the method by which the APN profile will assign IP addresses to PDP contexts.
> When the PDP context is being established and the APN name is determined, the system will examine the APN’s configuration profile. Part of that procedure is determining how to handle IP address allocation. The figure in the Example section below displays the process used by the system to determine how the address should be allocated.
> Example
> The following command configures the APN to dynamically assign an address from a DHCP server and reject PDP sessions with static IP addresses:
> ip address alloc-method dhcp-proxy
> The following command configures the APN to reject sessions requesting dynamically assigned addresses and only allow those with static addresses:
> ip address alloc-method no-dynamic allow-user-specified
> The following figure provides the IP address allocation process:
> IP Address Allocation Process
> ip address pool
> Configures the name of a a private IP address pool configured on the system from which to assign an address for a PDP context.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> [ no ] ip address pool name pool_name
> no
> Removes a previously configured pool name.
> pool_name
> Specifies the name of the private pool configured on the system from which an IP address will be assigned. The name is expressed as an alphanumeric string of 1 through 31 characters that is case sensitive.
> Usage
> If the ip address alloc-method command is configured to allow the assignment of IP addresses from a local pool configured on the system. It command instructs the system as to which pool should be used.
> The pool specified by this command must be a private pool configured in the destination context on the system. Please refer to the ip pool command in the Context Configuration Mode Commands chapter for information on configuring IP address pools.
> Multiple APNs can use the same IP address pool if required. In addition, this command could be issued multiple times to allow a single APN to use different address pools.
> Example
> The following command configures the system to use a pool named private_pool1 for address allocation:
> ip address pool private_pool1
> ip context-name
> Configures the name of the destination context to use for subscribers accessing this APN.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> [ no ] ip context-name ctxt_name
> no
> Removes a previously configured context name.
> ctxt_name
> Specifies the name of the context through which subscriber data traffic will be routed. ctxt_name must be an alphanumeric string from 1 to 79 characters.
> Usage
> Use this command to specify the name of a destination context configured on the system through which to route all subscriber data traffic. This context will be used for subscribers accessing this APN. If no name is specified, the system will use the context in which the APN is configured as the destination context.
> When the APN is used to support Mobile IP functionality, this command is used to indicate the context in which the FA (foreign Agent) service is configured. If no name is specified, the context in which the GGSN service facilitating the subscriber PDP context is used.
> Example
> The following command configures the system to route subscriber traffic for the APN through a context called isp1:
> ip context-name isp1
> ip header-compression
> Configures IP packet header compression parameters for this APN.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> ip header-compression vj
> default ip header-compression
> no ip header-compression
> default
> Disables Van-Jacobson header compression.
> no
> Disables Van-Jacobson header compression.
> vj
> Enables Van-Jacobson header compression for IP packets. Default: Enabled
> Usage
> IP header compression reduces packet header overhead resulting in more efficient utilization of available bandwidth.
> Example
> The following command disables packet header compression for the APN:
> no ip header-compression
> ip hide-service-address
> Renders the IP address of the GGSN unreachable from mobile stations (MSs) using this APN. This command is configured on a per-APN basis.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> [ default | no ] ip hide-service-address
> default
> Does not allow the mobile station to reach the GGSN IP address using this APN.
> no
> Allows the mobile station to reach the GGSN IP address using this APN.
> Usage
> This hides the GGSN IP address from the mobile station for security purposes.
> Example
> The following command allows the GGSN’s IP address to be viewed by the mobile station:
> no ip hide-service-address
> ip local-address
> Configures the local-side IP address of the subscriber's point-to-point connection.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> ip local-address ip_address
> no ip local-address
> no
> Removes a previously configured IP local-address.
> ip_address
> Specifies an IP address configured in a destination context on the system through which a packet data network can be accessed. ip_address must be expressed in IPv4 dotted-decimal notation.
> Usage
> This parameter specifies the IP address on the system that the MS uses as the remote-end of the PPP connection. If no local address is configured, the system uses an unnumbered scheme for local-side addresses.
> Example
> The following command configures a local address of 192.168.1.23 for the MS:
> ip local-address 192.168.1.23
> ip multicast discard
> Configures the IP multicast discard packet behavior.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> [ default | no ] ip multicast discard
> default
> Restores the APN IP parameters to the default multicast settings, which is to discard PDUs.
> no
> Removes a previously configured IP multicast discard.
> Usage
> This command specifies if IP multicast discard is enabled or disabled.
> Example
> The following command enables IP multicast discard for an APN:
> ip multicast discard
> ip qos-dscp
> Configures the quality of service (QoS) differentiated service code point (DSCP) used when sending data packets of a particular 3GPP QoS class over the Gi interface.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> ip qos-dscp { qci { 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 } { dscp } } +
> default ip qos-dscp
> no ip qos-dscp { qci { 1 | 2 | 3 | 4 | 5 { allocation-retention-priority { 1..3 } } | 6 { allocation-retention-priority { 1..3 } } | 7 { allocation-retention-priority { 1..3 } } | 8 { allocation-retention-priority { 1..3 } } | 9 } } } +
> default
> Restores the APN IP parameters to the default setting conversational ef streaming af11 interactive af21 background be.
> no
> Restores the QoS parameter to its default setting.
> allocation-retention-priority
> Specifies the DSCP for interactive class if the allocation priority is present in the QoS profile.
> allocation-retention-priority can be the integers 1, 2, or 3.
> DSCP values use the following matrix to map based on traffic handling priority and Alloc/Retention priority if the allocation priority is present in the QoS profile.
> Following table shows the DSCP value matrix for allocation-retention-priority.
> Default DSCP Value Matrix

> Allocation Priority | 1 | 2 | 3
> Traffic Handling Priority |  |  |
> 1 | ef | ef | ef
> 2 | ef | ef | ef
> 3 | af21 | af21 | af21
> 4 | af21 | af21 | af21

> ‌
> Important: If you only configure DCSP marking for interactive traffic classes without specifying ARP, it may not properly take effect. The CLI allows this scenario for backward compatibility. However, it is recommended that you configure all three values.
> qci
> Configures the QoS Class Identifier (QCI) attribute of QoS. Here the qci_val is the QCI for which the negotiate limit is being set; it ranges from 1 to 9.
> dscp
> Specifies the DSCP for the specified traffic pattern. dscp can be configured to any one of the following:

> • | af11: Assured Forwarding 11 per-hop-behavior (PHB)
> • | af33: Assured Forwarding 33 PHB
> • | af12: Assured Forwarding 12 PHB
> • | af41: Assured Forwarding 41 PHB
> • | af13: Assured Forwarding 13 PHB
> • | af42: Assured Forwarding 42 PHB
> • | af21: Assured Forwarding 21 PHB
> • | af43: Assured Forwarding 43 PHB
> • | af22: Assured Forwarding 22 PHB
> • | be: Best effort forwarding PHB
> • | af23: Assured Forwarding 23 PHB
> • | ef: Expedited forwarding PHB
> • | af31: Assured Forwarding 31 PHB
> • | pt: Pass through (ToS of user packet is not modified)
> • | af32: Assured Forwarding 32 PHB

> ‌
> Default: QCI:

> • | 1: ef

> • | 2: ef

> • | 3: af11

> • | 4: af11

> • | 5: ef

> • | 6: ef

> • | 7: af21

> • | 8: af21

> • | 9: be

> +
> More than one of the above keywords can be entered within a single command.
> Usage
> DSCP levels can be assigned to specific traffic patterns in order to ensure that data packets are delivered according to the precedence with which they’re tagged. The diffserv markings are applied to the IP header of every subscriber data packet transmitted over the Gi interface(s).
> The traffic patterns are defined by QCI (1 to 9). Data packets falling under the category of each of the traffic patterns are tagged with a DSCP that further indicate their precedence as shown in following tables respectively:
> Class structure for assured forwarding (af) levels

> Drop Precedence | Class
> Class 1 | Class 2 | Class 3 | Class 4
> Low | af11 | af21 | af31 | af41
> Medium | af12 | af22 | af32 | af41
> High | af13 | af23 | af33 | af43

> ‌

> Precedence (low to high) | DSCP
> 1 | Best Effort (be)
> 2 | Class 1
> 3 | Class 2
> 4 | Class 3
> 5 | Class 4
> 6 | Express Forwarding (ef)

> ‌
> The DSCP level can be configured for multiple traffic patterns within a single instance of this command.
> Example
> The following command configures the DSCP level for QCI to be Expedited Forwarding,ef:
> ip qos-dscp qci 1 ef
> ip source-violation
> Enables or disables packet source validation for the current APN.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> ip source-violation { ignore | check [ drop-limit limit ] } [ exclude-from-accounting ]
> default ip source-violation
> default
> Restores the APN ip parameters to the default settings check enabled, drop-limit 10.
> ignore
> Default: Disabled
> Disables source address checking for the APN.
> check [ drop-limit limit ]
> Default: Enabled, limit = 10
> Enables the checking of source addresses received from subscribers for violations.
> A drop-limit can be configured to set a limit on the number of invalid packets that can be received from a subscriber prior to their session being deleted. limit can be configured to any integer value between 0 and 1000000. A value of 0 indicates that all invalid packets will be discarded but the session will never be deleted by the system.
> exclude-from-accounting
> Default: Disabled
> Excludes the packets identified with IP source violation from the statistics generated for accounting records.
> Usage
> Source validation is useful if packet spoofing is suspected or for verifying packet routing and labeling within the network.
> Source validation requires the source address of received packets to match the IP address assigned to the subscriber (either statically or dynamically) during the session.
> Example
> The following command enables source address validation for the APN and configures a drop-limit of 15:
> ip source-violation check drop-limit 15
> ip user-datagram-tos copy
> Controls the copying of the IP ToS octet value from user IPv4/IPv6 datagrams into the IP header of GTP tunnel encapsulations.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> [ default | no ] ip user-datagram-tos copy
> default
> Sets the default behavior of this command. By default this function is disabled.
> no
> Removes the preconfigured parameter for this command.
> Usage
> This command enables or disables the copying of the ToS byte from the inner IP header to the outer IP header for an RP connection.
> When this function is enabled, the SGSN can detect the special ToS marking in the outer IP header of GTP tunnel packets and identify certain packets as control messages.
> ipv6 access-group
> Configures the IPv6 access group for the current APN profile which applies a single Access Control List (ACL) to multiple subscribers via the APN for IPv6 traffic.
> Product
> GGSN, ECS, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> [ no ] ipv6 access-group group_name [ in | out ]
> no
> Removes a previously configured IPv6 ACL applied to a particular APN for IPv6 traffic. If at least one of the two { in | out } options is not selected for the ACL that will be removed, the ACL will be removed for both directions.
> group_name
> Specifies the name of the IPv6 access group as an alphanumeric string of 1 through 79 characters.
> [ in | out ]
> Default: both (in and out)
> Specifies the access-group as either inbound or outbound by the keywords in and out, respectively.
> If no direction is supplied in the base command, the specified IPv6 access control list will be applied to both directions.
> Usage
> Use this command to apply a single IPv6 access control list to multiple subscribers via an APN for inbound or outbound IPv6 traffic.
> If no traffic direction is specified, the selected access control list will be applied to both traffic directions.
> Example
> The following command associates the sampleipv6Group access group with the current APN profile for both inbound and outbound access:
> ipv6 access-group sampleipv6Group
> The following removes the outbound access group flag for sampleipv6Group:
> no ipv6 access-group sampleipv6Group out
> ipv6 dns
> Configures primary and secondary IPv6 Domain Name Service (DNS) servers.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> [ no ] ipv6 dns { primary | secondary } { ipv6_dns_address }
> no
> Deletes a previously configured DNS server.
> primary
> Configures the IPv6 address of primary DNS server for the APN.
> secondary
> Configures IPv6 address of the secondary DNS server for the APN. Only one secondary DNS server can be configured.
> ipv6_dns_address
> The IP address of the DNS server entered using IPv6 colon-separated notation.
> Usage
> DNS servers are configured on a per-APN profile basis. This allows each APN profile to use specific servers in processing PDP contexts.
> The DNS can be specified at the APN level in APN configuration as well as at the Context level in Context configuration mode with ip name-servers command, or it can be received from AAA server.
> When DNS is requested in PCO configuration, the following preference will be followed for DNS value:
> 1. DNS Values received from LNS have the first preference
> 2. DNS values received from RADIUS Server has the second preference
> 3. DNS values locally configured with APN has the third preference
> 4. DNS values configured at context level with ip name-servers command has the last preference.
> Important: The same preference would be applicable for the NBNS (NetBIOS Name Service) servers to be negotiated via ICPC (Initial Connection Protocol Control) with the LNS (L2TP Network Server).
> Example
> The following command provides an example of setting the primary DNS server:
> ipv6 dns primary fe80::c0a8:a04
> ipv6 egress-address-filtering
> Enables or disable IIPv6 egress address filtering. This function filters out packets not meant for the mobile interface ID. The GGSN records the source interface ID of all the packets received from the mobile node. When packets sent to the mobile node are received, the destination interface ID is compared against the list of recorded interface IDs and with the local interface-ID assigned to the MS during IPv6CP. If no match is found, the packet is dropped.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> [ no ] ipv6 egress-address-filtering
> no
> Disables IPv6 egress address filtering.
> Usage
> Used to filter packets that arrive from the internet to a particular site.
> Example
> The following command provides an example disabling egress address filtering:
> no ipv6 egress-address-filtering
> ipv6 initial-router-advt
> Creates an IPv6 initial router advertisement interval for the current APN.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> ipv6 initial-router-advt { interval int_value | num-advts num_value }
> [ default ] ipv6 initial-router-advt { interval | num-advts }
> default
> Resets interval or num-advts to their default setting.
> interval int_value
> Specifies the time interval (in milliseocnds) when the initial IPv6 router advertisement is sent to the mobile node as an integer from 100 through 16000. Default: 3000ms
> value is .
> num-advts value num_value
> Specifies the number of initial IPv6 router advertisements sent to the mobile node as an integer from 1 through 16. Default: 3
> Usage
> This command is used to set the advertisement interval and the number of advertisements. Using a smaller advertisement interval increases the likelihood of router being discovered more quickly when it first becomes available.
> Example
> The following command specifies the initial ipv6 router interval to be 2000ms:
> ipv6 initial-router-advt interval 2000
> l3-to-l2-tunnel address-policy
> Configures the address allocation/validation policy, when subscriber L3 (IPv4/IPv6) sessions are tunneled using an L2 tunneling protocol, such as L2TP.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> l3-to-l2-tunnel address-policy { alloc-only | alloc-validate | no-alloc-validate }
> default l3-to-l2-tunnel address-policy
> default
> Restores the layer 3-to-layer 2 tunnel address policy parameter to the default setting of validation with no allocation.
> alloc-only
> Specifies that the system locally allocates and validates subscriber addresses. Default: Disabled
> alloc-validate
> Specifies that the system allocates addresses when IP addresses are dynamically assigned. The system does not validate the address specified by the subscriber. Default: Disabled
> no-alloc-validate
> Specifies that the system does not allocate or validate subscriber addresses locally for such sessions; it passes the address between remote tunnel terminator to the mobile node. Default: Enabled
> Usage
> This command can be useful for MIP HA sessions tunneled from the system using L2TP tunnels, or GGSN PDP contexts of type IP tunneled using L2TP to a remote LNS.
> Example
> The following command configures the system to locally allocate and validate subscriber addresses:
> l3-to-l2-tunnel address-policy alloc-only
> loadbalance-tunnel-peers
> Configures how tunnel-peers are selected for this APN.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> loadbalance-tunnel-peers { balanced | prioritized | random }
> default loadbalance-tunnel-peers
> default
> Restores the loadbalance-tunnel-peers parameter to the default setting of random.
> balanced
> Tunnel-peer selection is made without regard to prioritization, but in a sequential order that balances the load across the total number of peer nodes available. Default: Disabled
> prioritized
> Tunnel-peer selection is made based on the priority configured for the peer. Default: Disabled
> random
> Tunnel-peer selection is random in order. Default: Enabled
> Usage
> Use this command to configure the load-balancing algorithm that defines how the tunnel-peers are selected by the APN when multiple peers are configured in the APN.
> Example
> The following command sets the APN to connect to tunnel-peers in a sequential order:
> load-balancing balanced
> long-duration-action detection
> Sets the detection of a session that exceeds the long duration timer and sends notification.
> Product
> All
> Privilege
> Security Administrator, Administrator
> Syntax
> long-duration-action detection
> default long-duration-action
> default
> Restores the long-duration-action parameter to its default setting of detection.
> long-duration-action detection
> Detects long duration sessions and sends SNMP TRAP and CORBA notification. This is the default behavior. Default: Enabled
> Usage
> Use this command to detect a session that exceeds the limit set by the long duration timer.
> Refer to the timeout idle and timeout long-duration commands for information on setting the long duration timer.
> Example
> Use the following command to enable detecting the session that exceeds the long duration timer:
> long-duration-action detection
> long-duration-action disconnection
> Specifies what action is taken when the long duration timer expires.
> Product
> All
> Privilege
> Security Administrator, Administrator
> Syntax
> long-duration-action disconnection [ suppress-notification ] [ dormant-only ] +
> long-duration-action disconnection
> Detects a long duration session and disconnects the session after sending SNMP TRAP and CORBA notification. Default: Disabled
> suppress-notifiaction
> Suppress the SNMP TRAP and CORBA notification after detecting and disconnecting a long duration session. Default: Disabled
> dormant only
> Disconnects the dormant sessions after long duration timer and inactivity time with idle time-out duration expires. It sends the SNMP TRAP and CORBA notification after disconnecting a long duration session. Default: Disabled
> Usage
> Use this command to determine what action is taken when a session exceeds the limit set by the long duration timer.
> Refer to the timeout idle and timeout long-duration command for information on setting the long duration timer.
> Example
> Use the following command to enable disconnecting sessions that exceed the long duration timer:
> long-duration-action disconnection
> Use the following command to disconnect the session that exceed the long duration timer without sending SNMP TRAP and CORBA notification:
> long-duration-action disconnection suppress-notification
> Use the following command to disconnect the session that exceed the long duration timer and also inactivity timer for idle time-out duration and send SNMP TRAP and CORBA notification:
> long-duration-action disconnection dormant-only
> Use the following command to disconnect the session that exceed the long duration timer and also inactivity timer for idle time-out duration without sending any SNMP TRAP and CORBA notification. If the session is idle and the session-idle-time >= inactivity time the session gets disconnected. Even if session is idle when the long-duration timed-out and session-idle time < inactivity time the timer value is reset to idle-timeout time.
> long-duration-action disconnection dormant-only suppress-notification
> max-contexts
> Configures the maximum number of PDP contexts (primary and secondary) that can be facilitated by the APN.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> max-contexts [ per-subscriber secondary secondary_ctx ] [ primary number total total_number ]
> default max-contexts
> default
> Restores the max-contexts parameter to its default settings of:

> • | primary: 1000000

> • | total: 1000000

> per-subscriber secondary secondary_ctx
> This keyword specifies the maximum number of secondary PDP contexts that can be facilitated by the APN per primary context (per-subscriber). Subscribers can have primary PDP and secondary PDP contexts; the secondary contexts share the same IP address as the primary.
> secondary_ctx is an integer from 0 through 10. Default: 10
> primary number
> This keyword specifies the maximum number of primary PDP contexts that can be facilitated by the APN. Subscribers can have primary PDP and secondary PDP contexts; the secondary contexts can be configured using the per-subscriber secondary keyword.
> number isbe an integer value from 1 to 4000000. Default: 4000000
> total total_number
> Specifies the maximum total number of PDP contexts (primary and secondary) that can be facilitated by the APN. total_number can be configured to any integer value from 1 to 4000000. Default: 4000000
> Usage
> This parameter can be used to configure a “soft” limit on the number of PDP contexts supported by a single APN.
> Soft limits are based on measurements gathered at regular short intervals (several times per minute) as opposed to measurements taken in real-time. Therefore the sampled measurement may not match the actual number of PDP contexts currently being processed. Every PDP context request received is compared against the result of the last sample. If the sample is less than the soft limit configured, the request will be processed. If it is more, the request will be rejected.
> Example
> The following command specifies that the maximum number of primary PDP contexts the APN can facilitate is 500,000 while the maximum total number is 750,000:
> max-contexts primary 500000 total 750000
> mbms bmsc-profile
> Applies a configured Broadcast-Multicast Service Center (BM-SC) profile to subscribers through APN for Multimedia Broadcast Multicast Service (MBMS) support and functionality.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> mbms bmsc-profile name bmsc_profile_name
> [ default | no ] mbms bmsc-profile
> default
> Applies the default BMSC profile to the subscribers through the APN.
> no
> Deletes a previously associated BM-SC profile with this APN.
> name bmsc_profile_name
> Specifies a name for the BM-SC profile already configured in BMSC configuration mode. bmsc_profile_name is an alphanumeric string of 1 through 79 characters that may contain dots (.) and/or dashes (-).
> Usage
> Use this command to associate a configured BM-SC profile to use for MBMS contexts with this APN for MBMS feature support.
> For more information on BM-SC profile configuration, refer to the BMSC Profile Configuration Mode Commands chapter.
> This command also configures the specific BM-SC profile to use for Internet Group Management Protocol (IGMP) JOIN requests received from PDP contexts with this APN.
> Example
> Following command applies a previously configured BM-SC profile named bm_sc_1 to an APN within the specific context.
> mbms bmsc-profile name bm_sc_1
> mbms bearer timeout
> Configures the session timeout values for the Multimedia Broadcast Multicast Service (MBMS) bearer contexts with this MBMS APN.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> mbms bearer timeout { absolute | idle } time
> [ default | no ] mbms bearer timeout { absolute | idle }
> default
> Sets the default value for the followed option for MBMS bearer context timeout.
> no
> Returns the timeout parameter to its default setting. If neither the absolute or idle keywords are used in conjunction with this keyword, both timeout options will be returned to their default settings.
> absolute
> Configures the absolute maximum time (in seconds) an MBMS bearer context may exist in any state (active or idle). Default: Disabled
> idle
> Default: Disabled
> Configures the maximum amount of time (in seconds) an MBMS bearer context may be idle.
> time
> time can be any integer value between 0 and 4294967295. A time of 0 disables timeouts for this APN. Default: 0
> Usage
> Use this command to limit the amount of time that an MBMS bearer context session can remain connected.
> Example
> The following commands enables an absolute time timeout of 60000 seconds for MBMS bearer context:
> mbms bearer timeout absolute 60000
> mbms ue timeout
> Configures the session timeout values for the Multimedia Broadcast Multicast Service (MBMS) user equipment (UE) contexts with this MBMS APN.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> mbms ue timeout absolute time
> [ default | no ] mbms ue timeout absolute
> default
> Set the default value for the followed option for MBMS UE context timeout.
> no
> Returns the timeout parameter to its default setting. If neither the absolute or idle keywords are used in conjunction with this keyword, both timeout options will be returned to their default settings.
> absolute time
> Configures the absolute maximum time (in seconds) an MBMS UE context may exist in any state (active or idle). time can be any integer value between 0 and 4294967295. A time of 0 disables timeouts for this APN. Default: 0
> Usage
> Use this command to limit the amount of time that an MBMS UE context session can remain connected.
> Example
> The following commands enables an absolute time timeout of 60000 seconds for MBMS UE context:
> mbms bearer timeout absolute 60000
> mediation-device
> Enables the use of a mediation device and specifies the system context to use for communicating with the device.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> mediation-device [ context-name context_name ] [ delay-GTP-response ] [ no-early-PDUs ] [ no interims ] +
> [ default | no ] mediation-device
> +
> Indicates that more than one of the options can be specified with a single execution of the command.
> default
> Changes the mediation device to no context-name configured and restores the mediation device’s default properties.
> no
> Deletes the mediation-device configuration.
> context-name context_name
> Configures the mediation VPN context for this APN as an alphanumeric string of 1 through 79 characters that is case sensitive. If not specified, the mediation context is the same as the destination context of the subscriber. Default: The subscribers destination context.
> delay-GTP-response
> When enabled, delays the CPC response until an Accounting Start response is received from the mediation device. Default: Disabled
> no-early-pdus
> Specifies that the system delays PDUs from the MS until a response to the GGSN accounting start request is received from the mediation device. The PDUs are queued, not discarded. Default: Disabled
> If “no-early-PDUs” is enabled, the chassis does not send uplink/downlink data from/to a MS until it receives the Acct-Rsp Start for the same from the mediation device. On receiving the Acct-Rsp, pending PDUs are forwarded. The chassis buffers up to two PDUs per call. As soon as the third PDU comes, the buffering is disabled and all the PDUs are forwarded for that call.
> Configures the system to queue up to two PDUs until the mediation device returns a response to the system's accounting START request per 3GPP standards. On receiving the Accounting response message, the system forwards the subsequent PDUs without discarding any of the packets.
> Important: For StarOS 10.0 and earlier releases, the system buffers up to four PDUs and queues or discards the remaining PDUs.
> Important: For StarOS 11.0 and later releases, the system is configured so that none of the PDUs are discarded.
> no-interims
> Disables sending interims to the mediation server. Default: Disabled
> Important: Different commands are used to disable RADIUS interims for RADIUS accounting and mediation accounting. To disable RADIUS interims for mediation accounting, use the following command: mediation-device context-name context_name no-interims. To disable RADIUS interims for RADIUS accounting, use the following command: accounting-mode radius-diameter no-interims.
> Usage
> This command enables mediation device support for the APN. Mediation devices can be either deep-packet inspection servers or transaction control servers.
> Keywords to this command can be used in combination to each other, depending on configuration requirements.
> Example
> The following command enables mediation device support for the APN and uses the protocol configuration located in an system context called ggsn1:
> mediation-device context-name ggsn1
> mediation-device context-name ggsn1 no-interims no-early-pdus
> mediation-device no-early-pdus no-interims
> mediation-device no-interims no-early-pdus
> The following command enables mediation device support for the APN and uses the protocol configuration located in the subscribers destination context:
> mediation-device
> mobile-ip home-agent
> Configures the IP address of the home agent (HA) used by the current APN to facilitate subscriber Mobile IP sessions.
> Product
> GGSN, FA, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> mobile-ip home-agent ip_address [ alternate ]
> no mobile-ip home-agent ip_address alternate
> default mobile ip home-agent
> default
> Restores the APN mobile-ip parameters to the default setting, no HA address defined.
> no
> Removes a previously configured HA address.
> ip_address
> Specifies the IP address of the HA expressed in IPv4 dotted-decimal notation.
> alternate
> Designates this Mobile IP HA as the alternate that will be used in the event of a fail-over.
> Usage
> If the APN is configured to support Mobile IP for all PDP contexts it is facilitating, this command specifies the IP address of the HA that is to be used.
> Example
> The following command configures an HA IP address of 192.168.1.15:
> mobile-ip home-agent 192.168.1.15
> mobile-ip mn-aaa-removal-indication
> Configures the system to remove various information elements when relaying Registration Request messages to the HA.
> Product
> GGSN, FA, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> [ default | no ] mobile-ip mn-aaa-removal-indication
> default
> Sets the default setting for mobile IP MN-AAA-Removal-Indication.
> no
> Disables this functionality. This is the default setting.
> Usage
> When this functionality is enabled, the MN-FA challenge and MN-AAA authentication extensions are removed when relaying a Registration Request (RRQ) to the HA.
> mobile-ip mn-ha-hash-algorithm
> Designates the encryption algorithm to use for Hash-based Message Authentication Code (HMAC).
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> mobile-ip mn-ha-hash-algorithm { hmac-md5 | md5 | rfc2002-md5 }
> default mobile-ip mn-ha-hash-algorithm
> default
> Designates the default encryption algorithm to use.
> hmac-md5 | md5 | rfc-2002-md5
> Default: hmac-md5
> The encryption algorithms that may be used.
> Usage
> Provides security by encrypting the data.
> Example
> The following command sets encryption for md5:
> mobile-ip mn-ha-hash-algorithm md5
> mobile-ip mn-ha-shared-key
> Configures the subscriber MobileNode-Home Agent (MN-HA) shared key.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> mobile-ip mn-ha-shared-key key
> no mobile-ip mn-ha-shared-key
> no
> Disables this functionality. This is the default setting.
> key
> Specifies the subscriber MN-HA shared key as either an alphanumeric string or a hexadecimal number sequence beginning with “0x”. The string or sequence consists of 16 to 127 characters.
> Usage
> Configures a shared key for the APN.
> Example
> The following command configures a shared key as the alphanumeric string sfd23408imi9yn:
> mobile-ip mn-ha-shared-key sfd23408imi9yn
> mobile-ip mn-ha-spi
> Configures the Mobile IP Security Parameter Index (SPI).
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> mobile-ip mn-ha-spi spi_number
> no mobile-ip mn-ha-spi
> no
> Disables this functionality. This is the default setting.
> spi_number
> Specifies the SPI as an integer from 256 through 4294967295.
> Usage
> Configures an SPI for the APN.
> Example
> The following command configures an SPI of 15111111111111111111111111111111:
> mobile-ip mn-ha-spi 15111111111111111111111111111111
> mobile-ip required
> Enables support for Mobile IP functionality for all PDP contexts facilitated by the current APN.
> Product
> GGSN, FA, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> [ default | no ] mobile-ip required
> default
> Applies the default setting for mobile-ip for the APN. Default is disabled.
> no
> Disables mobile-ip for the APN.
> Usage
> Mobile IP functionality for IP PDP contexts is only supported at the APN-level. This command enables or disables Mobile IP support for the APN.
> When Mobile IP is performed, the system authenticates the subscriber and the Mobile IP FA.
> If this option is enabled, the system deletes all PDP contexts attempting to access the APN for which a Mobile IP session can not be established.
> mobile-ip reverse-tunnel
> Configures the system to support reverse-tunneling for Mobile IP sessions facilitated by the current APN.
> Product
> GGSN, FA, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> [ default | no ] mobile-ip reverse-tunnel
> default
> Designates the default reverse tunnel for the APN. The default is enabled.
> no
> Disables this functionality.
> Usage
> Use this command to enable support for Mobile IP reverse tunneling for the APN. Reverse tunneling is enabled by default.
> nai-construction
> Configures the Network Access Identifier (NAI) construction parameters on a per-APN basis only, rather than by per-aaa-group when constructed NAI authentication is enabled.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> nai-construction { imsi | msisdn } [ override-null-username ] [ encrypted password encrypt_password | use-shared-secret-password | password password ]
> no nai-construction
> no
> Disables the NAI construction at the APN level.
> imsi
> Enables NAI construction using IMSI for authentication for a user. GGSN constructs NAI using IMSI when no user-name is received. This is the default setting. Default: Enabled
> msisdn
> Enables NAI construction using Mobile Station International ISDN Number (MSISDN) for authentication for a user. GGSN constructs NAI using MSISDN when no user-name is received.
> override-null-username
> Enables NAI construction using IMSI/MSISDN for authentication for a user or when empty user name is received.
> encrypted password
> Specifies an encrypted password is to be used for this NAI-constructed user. string is an alphanumeric string of 0 through 63 characters.
> password
> Configures the authentication user-password for this NAI-constructed user. password is an alphanumeric string of 0 through 63 characters.
> use-shared-secret-password
> Specifies use of the RADIUS authentication shared secret password for this NAI-constructed user.
> Usage
> NAI-construction defines the behavior for construction at the APN level. If defined for a particular APN, this command works independently and overwrites the behavior of aaa constructed-nai defined at the context level for calls involving this APN.
> Note that NAI construction using IMSI or MSISDN, where either no user name is received or a blank user name is received for authentication, is applicable only when NAI constructed authentication is enabled using the aaa nai-construction authentication command in Context Configuration Mode.
> Example
> The following command enables NAI-construction using IMSI as the authentication type with an encrypted password:
> nai-construction imsi encrypted password s1289sf980333jwwdo97342
> nbns
> Configures and enables use of NetBios Name Service (NBNS) for the APN.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> [ no ] nbns { primary | secondary } IP_address
> no
> Removes/disables use of a previously configured NetBios Name Service.
> primary
> Designates primary NBNS server. Must be followed with an IPv4 address in dotted-decimal notation.
> secondary
> Designates secondary/failover NBNS server. Must be followed with an IPv4 address in dotted-decimal notation.
> IP_address
> Specifies the IP address in IPv4 dotted-decimal notation.
> Usage
> This command specifies NBNS parameters. The NBNS option is present for both pdp type IP and pdp type PPP for GGSN.
> The system can be configured to use NetBios Name Service for the APN.
> Example
> The following command configures the APN’s NetBios Name Service to primary IP 192.168.1.15.
> nbns primary 192.168.1.15
> nexthop-forwarding-address
> Configures the next hop forwarding address for the APN.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> nexthop-forwarding-address ip_address
> no nexthop-forwarding-address
> no
> Disables this function. This is the default setting.
> ip_address
> Specifies the IP address of the nexthop forwarding address in IPv4 dotted-decimal or IPv6 colon-separated notation.
> Usage
> Use this command to configure the next hop forwarding address for the APN.
> Example
> The following command configures the next hop forwarding address to 10.1.1.1:
> nexthop-forwarding-address 10.1.1.1
> npu qos
> Configures an NPU QoS priority queue for packets facilitated by the APN.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator\
> Syntax
> npu qos traffic priority { best-effort | bronze | derive-from-packet-dscp | gold | silver }
> default npu qos traffic priority
> default
> Configures the default NPU QoS traffic priority.
> traffic priority { best-effort | bronze | derive-from-packet-dscp | gold | silver }
> best-effort: Assigns the best-effort queue priority. This is the lowest priority.
> bronze: Assigns the bronze queue priority. This is the third-highest priority.
> derive-from-packet-dscp: Specifies that the priority is to be determined from the DSCP (Differentiated Services Code Point) field in the packet's TOS octet. Default: Enabled
> gold: Assigns the gold queue priority. This is the highest priority.
> silver: Assigns the silver queue priority. This is the second-highest priority.
> Usage
> This command is used in conjunction with the Network Processing Unit (NPU) Quality of Service (QoS) functionality.
> The system can be configured to determine the priority of a subscriber packet either based on the configuration of the APN, or from the differentiated service (DS) field in the packet's TOS octet (representing the differentiated service code point (DSCP) value).
> Refer to the GGSN Administration Guide for additional information on NPU QoS functionality.
> Example
> The following command configures the APN’s priority queue to be gold:
> npu qos traffic priority gold
> outbound
> Configures the APN host username and password.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> outbound { [ encrypted ] password pwd | username name }
> no outbound password | username
> no
> Removes previously configured outbound information for the APN.
> encrypted
> The encrypted keyword is intended only for use by the chassis while saving configuration scripts. The system displays the encrypted keyword in the configuration file as a flag that the variable following the password keyword is the encrypted version of the plain text password. Only the encrypted password is saved as part of the configuration file.
> password pwd
> Specifies the password to use for session authentication as an alphanumeric string of 1 through 132 characters that is case sensitive.
> username name
> Specifies the username to use for session authentication as an alphanumeric string of 1 to 127 characters that is case sensitive.
> Usage
> This command can be used to provide a username and password for authentication when the subscriber does not supply one in accordance with 3GPP standards. In addition, it can be used to create a PPP session when using L2TP to tunnel IP PDP contexts.
> If only a username is specified using this command, the password is determined based on the setting of the aaa constructed-nai command in the Context Configuration mode. That command is also used to determine the password if an outbound username and password are configured for the APN when the imsi-auth keyword is specified for the authentication command in this mode.
> Example
> The following commands configures an APN username of isp1 and a password of secRet123.
> outbound username isp1
> outbound password secRet123
> p-cscf
> Enables use of locally configured Proxy Call Session Control Function (P-CSCF) addresses or a Fully Qualified Domain Name (FQDN).
> Product
> P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> p-cscf { fqdn fqdn | primary [ ip IPv4_address | ipv6 IPv6_address ] | secondary [ ip IPv4_address | ipv6 IPv6_address ] }
> no p-cscf { fqdn | primary [ ip | ipv6 ] | secondary [ ip | ipv6 ] }
> no
> Disables use of previously configured P-CSCF addresses or FQDN.
> fqdn fqdn
> Configures the P-CSCF FQDN server name for the APN as an alphanumeric string of 1 through 256 characters.
> primary [ ip IPv4_address | ipv6 IPv6_address ]
> Specifies the primary P-CSCF address for the APN.
> IPv4_address must be expressed in IPv4 dotted-decimal notation.
> IPv6_address must be expressed in IPv6 colon-separated notation.
> secondary [ ip IPv4_address | ipv6 IPv6_address ]
> Specifies the secondary P-CSCF address for the APN.
> IPv4_address must be expressed in IPv4 dotted-decimal notation.
> IPv6_address must be expressed in IPv6 colon-separated notation.
> Usage
> Use this command to specify the P-CSCF addresses or FQDN server name associated with this APN.
> Example
> The following command enables a P-CSCF with the primary IPv4 address 10.2.3.4 for the APN:
> p-cscf primary ip 10.2.3.4
> The following command enables a P-CSCF with FQDN server name pcscfalias1.ind.pun.cisco.com for the APN:
> p-cscf fqdn pcscfalias1.ind.pun.cisco.com
> pdp-type
> Configures the type of PDP contexts that are supported by this APN.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> pdp-type { ipv4 [ ipv6 ] | ipv6 [ ipv4 ] | ppp }
> default pdp-type
> default
> Configures the default PDP type, IPv4, for the APN.
> ipv4 [ ipv6 ]
> Enables support for IPv4 PDP contexts. Also enables support for IPv6 if the IPv6 optional keyword is entered in this command. Default: Enabled
> Important: Entering both IPv4 and IPv6 in either order enables support for both.
> ipv6 [ ipv4 ]
> Enables support for IPv6 PDP contexts. Also enables support for IPv4 if the IPv6 optional keyword is entered in this command. Default: Disabled
> Important: Entering both IPv4 and IPv6 in either order enables support for both.
> ppp
> Enables support for PPP PDP contexts. Default: Disabled
> Usage
> IP PDP context types are those in which the MS is communicating with a PDN such as the Internet or an intranet using IP. PPP PDP contexts are those in which PPP or PPP Network Control Protocol (NCP) frames from the MS are either terminated at, or forwarded by the GGSN.
> If a session specifies a PDP type that is not supported by the APN, the system rejects the session with a cause code of 220 (DCH, Unknown PDP address or PDP type).
> Caution: For the IPv6 calls to work, the destination context must have at least one IPv6 interface configured.
> Example
> The following command configures the APN to support PPP context types:
> pdp-type ppp
> permission
> Enables the ability to use network mobility service (NEMO) functionality for the current APN.
> Product
> P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> [ no ] permission nemo
> default permission
> no | default
> Disables the ability to use NEMO functionality.
> nemo
> Enables the ability to use NEMO functionality.
> Usage
> Use this command to enable support for NEMO functionality on the APN. NEMO is disabled by default.
> Example
> The following command enables NEMO functionality:
> permission nemo
> The following command disables NEMO functionality:
> no permission nemo
> policy
> Configures the Mobile IPv6 policy to set the action to be taken when IPv4/IPv6 subscriber packets need to be tunneled and the encapsulated packets exceed the tunnel maximum transmission unit (MTU).
> Product
> P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> policy ipv6 tunnel mtu exceed { fragment [ inner ] | notify-sender }
> [ default | no ] policy ipv6 tunnel mtu exceed
> default
> IPv6: System will do a Path MTU (PMTU) discovery and send “ICMPv6 Packet Too Big” to the original sender if the subscriber packet exceeds MTU after encapsulation.
> IPv4: System will do an outer IPv6 fragmentation if the packet exceeds MTU after encapsulation.
> no
> Disables this functionality.
> ipv6 tunnel mtu exceed { fragment [ inner ] | notify-sender }
> fragment: System will do an outer IPv6 fragmentation if the subscriber packet exceeds MTU after encapsulation.
> inner:
> IPv6: System will do a PMTU discovery and send “ICMPv6 Packet Too Big” to the original sender if the subscriber packet exceeds MTU after encapsulation.
> IPv4: If packet will exceed tunnel MTU after encapsulation, based on DF bit and ignore-df config, the original IPv4 packet will be fragmented and then encapsulated so that it will not exceed MTU, or ICMP Error will be sent if IPv4 packet fragmentation is not allowed.
> notify-sender:
> IPv6: System will do a PMTU discovery and send “ICMPv6 Packet Too Big” to the original sender if subscriber packet exceeds MTU after encapsulation.
> IPv4: System will do an outer IPv6 fragmentation if packet exceeds MTU after encapsulation.
> Usage
> This command sets the Mobile IPv6 policy for the action to be taken when IPv4/IPv6 subscriber packets need to be tunneled and the encapsulated packets exceed tunnel MTU size.
> Example
> The following command causes the system to do outer IPv6 fragmentation if the subscriber packet exceeds MTU after encapsulation:
> policy ipv6 tunnel mtu exceed fragment
> ppp
> Configures the Point-to-Point Protocol (PPP) options for the current APN.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> ppp { data-compression { protocols protocols | mode modes } | keepalive seconds | min-compression-size min_octets | mtu max_octets }
> default ppp { data-compression protocols | keepalive | min-compression-size | mtu }
> no ppp { data-compression protocols | keepalive seconds | mtu }
> default
> Configures the default PPP parameters for the specified APN.
> no
> Resets the option specified to its default setting.
> data-compression { mode modes | protocols protocols}
> Configures the data compression or the compression protocol to use for the APN. Default: all protocols enabled
> mode modes: Sets the compression mode to one of the following:

> • | normal: Packets are compressed using the packet history for automatic adjustment and for best compression.

> • | stateless: Each packet is compressed individually.

> protocols protocols: Sets the compression protocol to one of the following:

> • | deflate: DEFLATE algorithm

> • | mppc: Microsoft Point-to-Point Compression

> • | stac: STAC LZS algorithm

> keepalive seconds
> Specifies the frequency of sending the Link Control Protocol (LCP) keep alive messages. seconds must be either 0 or an intgeger from 5 through 14400. The special value 0 disables the keep alive messages entirely. Default: 30
> min-compression-size min_octets
> Specifies the smallest packet to which compression may be applied as an integer from 0 through 2000. Default: 128
> mtu max_octets
> Specifies the maximum transmission unit (MTU) for packets accessing the APN as an integer from 100 through 2000. Default: 1500
> Important: The MTU refers to the PPP payload which excludes the two PPP octets. Therefore, an MTU of 1500 corresponds to the 3GPP standard MTU of 1502 for GTP packets with PPP payloads.
> Usage
> Adjust packet sizes and compression to improve bandwidth utilization. Each network may have unique characteristics such that determining the best packet size and compression options may require system monitoring over an extended period of time.
> Example
> The following command configures the ppp data-compression mode for the APN to be stateless:
> ppp data-compression mode stateless
> The following command configures an MTU of 500 for the APN:
> ppp mtu 500
> proxy-mip
> Configures support for Proxy Mobile IP functionality for the APN.
> Product
> GGSN, FA, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> [ default | no ] proxy-mip { required | null-username static-homeaddr }
> default
> Configures the default proxy MIP setting for the specified APN
> no
> Disables this functionality.
> required
> Default: Disabled.
> Enables proxy-mip for all subscribers using this APN.
> null-username static-homeaddr
> Configures handling of RRQ to enable the acceptance without an NAI extension in this APN. Default: Disabled
> Usage
> This command requires that Proxy Mobile IP functionality be performed for all PDP contexts facilitated by the APN.
> When Proxy Mobile IP is performed, the system performs subscriber authentication but not Mobile IP FA authentication. It can be configured to handling of RRQ without NAI extension in an APN.
> More information about Proxy Mobile IP support for the GGSN can be found in the GGSN Administration Guide.
> Example
> The following command causes the system to support Proxy Mobile IP for all PDP contexts facilitated by the APN:
> proxy-mip required
> The following command will enables the accepting of RRQ without NAI extensions in this APN.
> proxy-mip null-username static-homeaddr
> qos negotiate-limit
> Cconfigures the QoS profile to provide the peak and committed data rate limits that the GGSN assigns to the APN. The GGSN sends the QoS profile to the SGSNs in response to GTP Create/Update PDP Context requests for traffic shaping and policing functionality.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> qos negotiate-limit direction { downlink | uplink } [ qci qci_val ] [ peak-data-rate bps [ committed-data-rate bps ] | committed-data-rate [ peak-data-rate bps ] ]
> no qos negotiate-limit direction { downlink | uplink } [ qci qci_val ] }
> no
> Disables the QoS Profile for the APN.
> Important: When no QoS Profile is configured, the system’s default behavior is to use the information provided by the SGSN.
> direction { downlink | uplink }
> downlink: Apply the specified limits and actions to the downlink (to-Gn direction).
> uplink: Apply the specified limits and actions to the uplink (to-Gi direction).
> qci qci_val
> qci_val is the QoS Class Identifier (QCI) for which the negotiate limit is being set. QCI ranges from 1 to 9. If no qci-val is configured, it will be handled as an undefined-qci (same as undefined-qos class).
> committed-data-rate bps
> Default: See the Usage section for this command
> The committed data rate (guaranteed-data-rate) in bps (bits per second).
> bps must be an integer from 1 through 16000000 for the downlink direction or 1 through 8640000 for the uplink direction. The value must also correspond to one of the permitted values identified the tables below. If a non-permitted value is entered for this parameter, the system rounds the value to the nearest lower supported value, except in the case where value is less than 1,000 bps. In this case, the system rounds the value to 1,000 bps. In addition, if the configured committed rate is lower than the value configured for the peak-data-rate, the system uses the configured peak rate for this parameter.
> Important: System measurements for this value exclude the GTP and outer packet headers. In addition, some traffic classes have both a committed rate and a peak rate, while other traffic classes have just a peak rate. If a committed rate is not applicable (such as, the traffic class is background or interactive), an error occurs if this option is configured. If the committed-rate is applicable (such as, the traffic class is conversational or streaming), the values supplied by the SGSN are used if this option is not configured.
> peak-data-rate bps
> Default: See the Usage section for this command
> Specifies the peak data-rate for the subscriber in bps (bits per second).
> bps must be an integer from 1 through 16000000 for the downlink direction or 1 through 8640000 for the uplink direction. The value must also correspond to one of the permitted values identified in the tables below. If a non-permitted value is entered for this parameter, the system rounds the value to the nearest lower supported value, except in the case where value is less than 1,000 bps. In this case, the system rounds the value to 1,000 bps.
> Usage
> This command configures the APN quality of service (QoS) profile. This feature enables configuring and enforcing bandwidth limitations on individual PDP contexts of a particular traffic class. Traffic classes are defined in 3GPP TS 23.107 and are negotiated during PDP context activation. Bandwidth enforcement is configured and enforced independently for the downlink and the uplink directions.
> The profile information is sent to the SGSN(s) in response to GTP Create/Update PDP Context Request messages. If the QoS profile requested by the SGSN is lower than the configured QoS profile configured, the profile requested by the SGSN is used. If the QoS profile requested by the SGSN is higher, the configured rates are used.
> Note that the values for the uplink/downlink committed-data-rate and peak-data-rate parameters are exchanged in the GTP messages between the GGSN and the SGSN. Therefore, the values used may be lower than the configured values. When negotiating the rate with the SGSN(s), the system convert this to a value that is permitted by GTP as shown in the tables below.
> Permitted Values for Committed and Peak Data Rates in GTP Messages

> Value (bps) | Increment Granularity (bps)
> From 1000 to 63,000 | 1,000 (e.g 1000, 2000, 3000, ... 63000)
> From 64,000 to 568,000 | 8,000 (e.g. 64000, 72000, 80000, ... 568000)
> From 57,6000 to 8,640,000 | 64,000 (e.g. 576000, 640000, 704000, ... 86400000)
> From 8,700,000 to 16,000,000 | 100,000 bps (e.g. 8700000, 8800000, 8900000, ... 16000000)

> ‌
> The command can be entered multiple times to specify different combinations of direction and class. If this command is not configured at all, the GGSN does not perform traffic policing or QoS negotiation with the SGSN (such as, it accepts all of the SGSN-provided values for the PDP context.
> Important: This command should be used in conjunction with the max-contexts command to limit the maximum possible bandwidth consumption by the APN.
> Additional information on the QoS traffic shaping functionality is located in the System Administration Guide.
> Default Values:
> Example
> The following command sets an uplink peak data rate of 128000 bps for QoS negotiation limit:
> qos negotiate-limit direction uplink peak-data-rate 128000
> qos rate-limit
> Configures the action on a subscriber traffic flow that violates or exceeds the peak/committed data rate under traffic policing/shaping functionality.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> qos rate-limit direction { downlink | uplink } [ qci qci_val ] [ burst-size { bytes | auto-readjust [ duration dur ] } ] [ exceed-action { drop | lower-ip-precedence | transmit } [ violate-action { drop | lower-ip-precedence | shape [ transmit-when-buffer-full ] | transmit } ] ] | [ violate-action { drop | lower-ip-precedence | shape [ transmit-when-buffer-full ] | transmit } [ exceed-action { drop | lower-ip-precedence | transmit } ] ] +
> no qos rate-limit direction { downlink | uplink } [ qci qci_val ]
> no
> Disables the QoS data rate limit configuration for the APN.
> Important: When no Qos Profile is configured, the system defaults to using the information provided by the SGSN.
> qos rate-limit direction { downlink | uplink }
> downlink: Apply the specified limits and actions to the downlink (the Gn direction).
> uplink: Apply the specified limits and actions to the uplink (the Gi direction).
> qci qci_val
> qci_val is the QoS Class Identifier (QCI) for which the negotiate limit is being set. QCI ranges from 1 to 9. If no qci-val is configured, it will be handled as an undefined-qci (same as undefined-qos class).
> burst-size { bytes | auto-readjust [ duration dur ] }
> Default: See Usage section for this command
> The burst size allowed, in bytes for peak data rate and committed data rate.
> bytes must be an integer from 1 through 6000000.
> Important: It is recommended that the minimum value of this parameter be configured to the greater of the following two values: 1) three times greater than packet MTU for the subscriber connection, OR 2) 3 seconds worth of token accumulation within the “bucket” for the configured peak-data-rate. In addition, if the committed-data-rate parameter is specified, the burst-size is applied to both the committed and peak rates.
> auto-readjust [ duration dur ] keyword provides the option to calculate the Burst size dynamically while configuring the rate-limit. Whenever this keyword is enabled to calculate burst size, the GGSN QoS negotiated rate is enforced for this calculation.
> Whenever there is a change in the rates (due to a QoS update), the burst sizes will be updated accordingly.
> This keyword also provides two different burst sizes. One burst size for peak rate and another for committed rate.
> By default this keyword is disabled.
> duration dur describes the duration of burst in seconds. If duration is not specified this keyword will use 1 second as default value. dur must be an integer between 1 through 30.
> exceed-action { drop | lower-ip-precedence | transmit }
> Default: See the Usage section for this command
> The action to take on the packets that exceed the committed-data-rate but do not violate the peak-data-rate. The following actions are supported:

> • | drop: Drop the packet

> • | lower-ip-precedence: Transmit the packet after lowering the ip-precedence

> • | transmit: Transmit the packet

> violate-action { drop | lower-ip-precedence | shape [ transmit-when-buffer-full ] | transmit }
> Default: See he Usage section for this command
> The action to take on the packets that exceed both the committed-data-rate and the peak-data-rate. The following actions are supported:
> drop: Drop the packet
> lower-ip-precedence: Transmit the packet after lowering the IP precedence
> shape [ transmit-when-buffer-full ]: Enables traffic shaping and provides the buffering of user packets when subscriber traffic violates the allowed peak/committed data rate. The transmit-when-buffer-full keyword allows the packet to be transmitted when buffer memory is full.
> transmit: Transmit the packet
> +
> More than one of the above keywords can be entered within a single command.
> Usage
> This command configures APN quality of service (QoS) data rate shaping through traffic policing/shaping. This command enables the actions on subscriber flows exceeding or violating the allowed peak/committed data rate. The shaping function also provides an enhanced function that buffers the excessive user packets and sends them to the subscriber when subscriber traffic goes below the committed or peak data rate limit.
> Important: The user packet buffer function in traffic shaping is not applicable for real-time traffic.
> Important: If the exceed/violate action is set to “lower-ip-precedence”, this command may override the configuration of the ip qos-dscp command in the GGSN Service Configuration mode for packets from the GGSN to the SGSN. In addition, the GGSN service ip qos-dscp command configuration can override the APN setting for packets from the GGSN to the Internet. Therefore, it is recommended that this command not be used in conjunction with this action.
> The command can be entered multiple times to specify different combinations of direction and class. If this command is not configured at all, the GGSN does not perform traffic policing or QoS negotiation with the SGSN. (It accepts all of the SGSN-provided values for the PDP context.)
> Important: This command should be used in conjunction with the max-contexts command to limit the maximum possible bandwidth consumption by the APN.
> To calculate the burst size dynamically an optional keyword auto-readjust [ duration dur ] is provided with the burst-size keyword. By default the burst size is fixed if defined in bytes with this command. Regardless of the rate being enforced, burst-size is fixed as set by the burst-size bytes parameter.
> The auto-readjust [ duration dur ] keyword enables variable burst size depending on the rate being enforced. the system calculates burst size using a per token bucket algorithm calculation as T=B/R, where T is the time interval, B is the burst size and R is the Rate being enforced. It also provides different burst size for Peak and Committed data rate-limiting.
> If the auto-readjust keyword is not used, a fixed burst size must be defined which will be applicable for peak data rate and committed data rate regardless of the rate being enforced.
> If the auto-readjust keyword is provided without specifying the duration, a default duration of 1 second will be used for burst size calculation.
> Example
> The following command lowers the IP precedence when the committed-data-rate and the peak-data-rate are violated in uplink direction:
> qos rate-limit direction uplink violate-action lower-ip-precedence
> The following command buffers the excess user packets when the subscriber traffic violates the configured peak or committed data-rate bps in uplink direction. Once the peak/committed data rate for that subscriber goes below the configured limit, the system transmits the packets. It also transmits them if buffer memory is full:
> qos rate-limit direction uplink violate-action shape transmit-when-buffer-full
> qos-renegotiate
> This keyword is obsolete.
> qos traffic-police
> This command is obsolete. This functionality is now supported through qos negotiate-limit and qos rate-limit commands.
> radius
> This command is obsolete.
> radius group
> This command is obsolete.
> radius returned-framed-ip-address
> Sets the policy whether or not to reject a call when the RADIUS server supplies 255.255.255.255 as the framed IP address and the MS does not supply an address.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> radius returned-framed-ip-address 255.255.255.255-policy { accept-call-when-ms-ip-not-supplied | reject-call-when-ms-ip-not-supplied }
> default radius returned-framed-ip-address 255.255.255.255-policy
> default
> Set the policy to its default of rejecting calls when the RADIUS server does not supply a framed IP address and the MS does not supply an address.
> { accept-call-when-ms-ip-not-supplied | reject-call-when-ms-ip-not-supplied }
> accept-call-when-ms-ip-not-supplied: Accept calls when the RADIUS server does not supply a framed IP address and the MS does not supply and address.
> reject-call-when-ms-ip-not-supplied: Reject calls when the RADIUS server does not supply a framed IP address and the MS does not supply an address.
> Usage
> Use this command to set the behavior in the APN when the RADIUS server supplies 255.255.255.255 as the framed IP address and the MS does not supply an address.
> Example
> Use the following command to set the APN to reject calls when the RADIUS server does not supply a framed IP address and the MS does not supply an address:
> radius returned-framed-ip-address 255.255.255.255-policy reject-call-when-ms-ip-not-supplied
> radius returned-username
> Configures the username that is returned in accounting messages. If the username is not available in the Protocol Configuration Options (PCO), the RADIUS returned username is preferred to the constructed username (imsi@apn, msisdn@apn, or outbound username).
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> radius returned-username { override-constructed-username | prefer-constructed-username }
> default radius returned-username
> default
> The default value for the RADIUS returned-username is prefer-constructed-username. The constructed username (imsi@apn, msisdn@apn) will be used.
> Important: If the username is available in the PCO, that username will be used regardless of the setting for this command (radius returned-username).
> override-constructed-username
> If the RADIUS server returns a username in the Access-Accept message and that username is not available in the Protocol Configuration Options (PCO), the new username from the RADIUS server will be used.
> prefer-constructed-username
> If the username is not available in the PCO, a constructed username (imsi@apn, msisdn@apn) will be used regardless of the username from the RADIUS server. This is the default.
> Usage
> Use this command to configure the username that is returned in accounting messages
> Example
> Following command sets the default value for the RADIUS returned-username is prefer-constructed-username [constructed username (imsi@apn, msisdn@apn)]:
> default radius returned-username
> restriction-value
> Configures the level of restriction to ensure controlled co-existence of the Primary PDP Contexts.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> restriction-value value
> [ default | no ] restriction-value
> default | no
> Default: no restriction-value
> Entering either default or no restriction-value sets the internal value to zero (0) so that connection to any APN is allowed.
> value
> Specifies a unique number that identifies the type of network supported for primary PDP contexts facilitated by this APN. The following values are supported:

> • | 1: Value used for Wireless Application Protocol (WAP) or Multimedia Messaging Service (MMS) type of networks. This corresponds to APN type public-1.

> • | 2: Value used for Internet or Packet-Switched Public Data Network (PSPDN) type of networks. This corresponds to APN type public-2.

> • | 3: Value used for corporate customers who use MMS. This corresponds to APN type private-1.

> • | 4: Value used for corporate who do not use MMS. This corresponds to APN type private-2.

> Usage
> Restricts the ability to have connections to public access and certain private APNs as required by the APN configuration. Also allows co-existence of the Primary PDP Contexts in a controlled manner.
> It does not restrict the total number of Primary PDP Contexts for the user. It also configures a method for preventing hackers in the public domain from using the UE as a router.
> Access is provided based on the following rules:

> • | If value = 1, then PDP contexts with restriction values of 0, 1, 2, and/or 3 are allowed

> • | If value = 2, then PDP contexts with restriction values of 0, 1 and/or 2 are allowed

> • | If value = 3, then PDP contexts with restriction values of 0 and/or 1 are allowed

> • | If value = 4, then PDP contexts with no restriction values are allowed

> • | If default or no syntax is entered, then no PDP contexts have restriction

> In the event that a Maximum APN Restriction value is received from the SGSN as part of a PDP Context Create (CPCR) or Update (UPCR) message, the GGSN allows the request based on the following matrix:

> • | If maximum = 0, then allow connection to any APN

> • | If maximum = 1, then allow APN Restriction values of 0, 1, 2, and/or 3

> • | If maximum = 2, then allow APN Restriction values of 0, 1 and/or 2

> • | If maximum = 3, the allow APN Restriction values of 0 and/or 1

> • | If maximum = 4, then always reject

> • | If maximum = anything else, then allow all APN Restriction values (1, 2, 3, and/or 4)

> Refer to 3GPP 23.060 version 6.9.0 for more information.
> Example
> The following command sets the restriction value of the APN to 2:
> restriction-value 2
> secondary ip pool
> This command specifies a secondary IP pool to be used as backup pool for Network Address Translation (NAT).
> Product
> NAT
> Privilege
> Security Administrator, Administrator
> Syntax
> secondary ip pool pool_name
> no secondary ip pool
> no
> Removes the previous secondary IP pool configuration.
> pool_name
> Specifies the secondary IP pool name.
> pool_name must be an alphanumeric string of 1 through 31 characters.
> Usage
> Use this command to configure a secondary IP pool for NAT subscribers, which is not overwritten by the RADIUS supplied list. The secondary pool configured will be appended to the RADIUS supplied IP pool list / APN provided IP pool list whichever is applicable during call setup.
> Important: This command is license dependent, requiring the 600-00-7871 NAT Bypass license. Please contact your local sales representative for more information.
> Example
> The following command configures a secondary IP pool named test123:
> secondary ip pool test123
> selection-mode
> Configures the level of verification that will be used to ensure a mobile station’s subscription to use this APN.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> selection-mode { chosen-by-sgsn | sent-by-ms | subscribed } +
> default selection-mode
> default
> Sets the default selection mode as “subscribed”.
> chosen-by-sgsn
> Default: Disabled
> The MS’s subscription will not be verified and the APN will be provided by the SGSN.
> sent-by-ms
> Default: Disabled
> The MS’s subscription will not be verified and the APN will be provided by the MS.
> subscribed
> Default: Enabled
> The MS’s subscription will be verified by the SGSN.
> +
> More than one of the above keywords can be entered within a single command.
> Usage
> Use this command to specify the level of verification that will be used to ensure a MS’s subscription to use this APN. This setting must mach the corresponding setting on the SGSN. If the two settings are not identical, the GGSN rejects the session with a cause code of 201 (D1H, User authentication failed).
> Example
> The following command specifies that the MS’s subscription will not be verified and that the APN name will be supplied by the SGSN:
> selection-mode chosen-by-sgsn
> timeout
> Configures the session timeout values for this APN.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> timeout { absolute | qos-renegotiate } time
> [ default | no ] timeout [ absolute | qos-renegotiate ]
> default
> Set the default value for the followed option.
> no
> Returns the timeout parameter to its default setting. If neither the absolute or idle keywords are used in conjunction with this keyword, both timeout options will be returned to their default settings.
> absolute
> Configures the absolute maximum time a session may exist in any state (active or idle).
> qos-renegotiate
> This keyword is obsolete.
> time
> Default:

> • | absolute = 0 (Disabled)

> • | qos-renegotiation = 300

> Measured in seconds, the time can be configured to any integer value between 0 and 4294967295.
> A time of 0 disables timeouts for this APN.
> Usage
> Use this command to limit the amount of time that a subscriber session can remain connected or as a QoS renegotiation dampening timer.
> Example
> The following commands enables an absolute time timeout of 60000 seconds:
> timeout absolute 60000
> timeout bearer-inactivity
> This command configures the bearer inactivity timer and the threshold value of the traffic (uplink + downlink) through an APN.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> timeout bearer-inactivity time volume-threshold total bytes
> [ default | no ] timeout bearer-inactivity
> default
> Sets the bearer inactivity timer to disabled mode.
> no
> Removes the configured bearer inactivity timer values and traffic threshold limit.
> time
> Specifies the timeout duration in second to check inactivity on the bearer.
> time must be an integer value from 3600 through 2592000.
> qos-renegotiate
> Configures the dampening timeout value for the QoS renegotiation (in seconds).
> In the event of a QoS upgrade, the specified timeout duration will be ignored and renegotiation will start immediately.
> volume-threshold total bytes
> The keyword sets the volume threshold in bytes to check the low activity on the bearer. This total volume is the sum of the traffic in uplink and downlink directions.
> bytes must be an integer value from 1 through 4294967295.
> Usage
> Use this command to configure the bearer inactivity timer and the threshold value of the traffic (uplink + downlink) through an APN.
> Example
> The following command enables the inactivity time on the bearer with a timeout duration of 7200 seconds and the total traffic volume of 256000 bytes in uplink and downlink directions as thresholds:
> timeout bearer-inactivity 7200 volume-threshold total 25600
> timeout emergency-inactivity
> Configures the emergency session inactivity-timeout for this APN. The APN must be configured as an emergency APN for Voice over LTE (VoLTE) E911 support.
> Product
> All
> Privilege
> Security Administrator, Administrator
> Syntax
> timeout emergency-inactivity seconds
> [ default | no ] timeout emergency-inactivity
> default | no
> Indicates the timeout specified is to be returned to its default behavior. If no specific timeout is specified, then all are set to their default behavior.
> seconds
> Default: 0 (disabled)
> Specifies the timeout duration, in seconds, to check inactivity on the emergency session.
> seconds must be an integer value from 1 through 3600.
> Usage
> Use this command to set the emergency session inactivity-timeout for this APN.
> At reception of an IP CAN Session Modification Request triggered by the Policy and Charging Rules Function (PCRF) for an IP-CAN (IP Connectivity Access Network) session serving an IMS emergency session that removes all PCC rules with a QCI other than the default bearer QCI and the QCI used for IMS signalling, the Policy and Charging Enforcement Function (PCEF) shall start a configurable inactivity timer (to enable PSAP Callback session). When the configured period of time expires, the PCEF shall initiate an IP-CAN Session Termination Request for the IP-CAN session serving the IMS Emergency session.
> If a PCRF-Initiated IP-CAN Session Modification Request provides new PCC rule(s) with a QCI other than the default bearer QCI and the QCI used for IMS signalling, the PCEF shall cancel the inactivity timer.
> Refer to the emergency-apn command in this chapter for additional information.
> Example
> The following command sets the emergency inactivity timeout duration to 450 seconds.
> timeout emergency-inactivity 450
> timeout idle
> Configures the idle timeout duration for the long duration timer associated with a subscriber session.
> Product
> All
> Privilege
> Security Administrator, Administrator
> Syntax
> timeout idle idle_dur
> no timeout idle
> no
> Indicates the timeout specified is to be returned to its default behavior. If no specific timeout is specified then all are set to their default behavior.
> idle_dur
> Default: 0
> Designates the maximum duration of the session (in seconds). After expiry the system considers the session as dormant or idle and invokes the long duration timer action.
> idle_dur must be an integer value in the range from 0 through 4294967295.
> The special value 0 disables the timeout specified.
> Usage
> Use this command to set the idle time duration for subscriber session to determine the dormant session.
> Refer to the long-duration-action detection and long-duration-action disconnection command in this chapter for additional information.
> Example
> Following command sets the idle timeout duration to 450 seconds.
> timeout idle 450
> timeout long-duration
> Configures the long duration timeout and inactivity duration for subscriber sessions.
> Product
> All
> Privilege
> Security Administrator, Administrator
> Syntax
> timeout long-duration ldt_timeout [ inactivity-time inact_timeout ]
> no timeout long-duration
> no
> Indicates the timeout specified is to be returned to its default behavior. If no specific timeout is specified then all timeouts are set to their default behavior.
> ldt_timeout
> Default: 0
> Designates the maximum duration of the session (in seconds) before the system automatically reports/terminates the session.
> Specifies the maximum amount of time (in seconds) before the specified timeout action is initiated.
> ldt_timeout must be an integer value in the range from 0 through 4294967295.
> The special value 0 disables the timeout specified.
> inactivity-time inact_timeout
> Specifies the maximum amount of time (in seconds) before the specified session is marked as dormant.
> inact_timeout must be an integer value in the range from 0 through 4294967295.
> The special value 0 disables the inactivity time specified.
> Usage
> Use this command to set the long duration timeout period and inactivity timer for subscriber sessions. Reduce the idle timeout to free session resources faster for use by new requests.
> Refer to the long-duration-action detection and long-duration-action disconnection commands in this chapter for additional information.
> Example
> The following command sets the long duration timeout duration to 300 seconds and the inactivity timer for subscriber session to 45 seconds.
> timeout long-duration 300 inactivity-time 45
> tpo policy
> Specifies the Traffic Performance Optimization (TPO) policy for the APN.
> Product
> TPO
> Privilege
> Security Administrator, Administrator
> Syntax
> tpo policy tpo_policy_name
> { default | no } tpo policy
> default
> Configures the default setting.
> Default: Use the default TPO policy configured in the rulebase.
> no
> Removes the TPO policy from the APN configuration.
> tpo_policy_name
> Specifies the TPO policy for the APN as an alphanumeric string of 1 through 63 characters.
> Usage
> Use this command to specify the TPO policy for the APN.
> Example
> The following command specifies to use the TPO policy named tpo_policy_110:
> tpo policy tpo_policy_110
> tunnel address-policy
> This command specifies the address allocation/validation policy for all tunneled calls (IP-IP, IP-GRE) except L2TP calls. This means that GGSN IP address validation could be disabled for specified incoming calls.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> tunnel address-policy { alloc-only | alloc-validate | no-alloc-validate }
> default tunnel address-policy
> default
> Resets the tunnel address-policy to alloc-validate.
> alloc-only
> IP addresses are allocated locally and no validation is done.
> alloc-validate
> Default.
> The VPN Manager allocates and validates all incoming IP addresses from a static pool of IP addresses.
> no-alloc-validate
> No IP address assignment or validation is done for calls arriving via L3 tunnels. Incoming static IP addresses are passed. This allows for the greatest flexibility.
> Usage
> This command supports scalable solutions for Corporate APN deployment as many corporations handle their own IP address assignments. In some cases this is done to relieve the customer or the mobile operators from the necessity of reconfiguring the range of IP addresses for the IP pools at the GGSN.
> For calls coming through L2TP tunnels, the command l3-to-l2-tunnel address policy as defined in the APN Configuration mode, will be in effect.
> Example
> Use the following command to reset the IP address validation policy to validate against a static pool of address:
> default tunnel address-policy
> Use the following command to disable all IP address validation for calls coming through tunnels:
> tunnel address-policy no-alloc-validate
> tunnel gre
> Configures Generic Routing Encapsulation (GRE) tunnel parameters between the GGSN and an external gateway for the APN.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> tunnel gre peer-address peer_address local-address local_addr [ preference num ]
> no tunnel gre peer-address peer_address
> no
> Disables GRE tunneling for the APN.
> peer-address peer_address
> Specifies the IP address of the external gateway terminating the GRE tunnel.
> peer_address must be expressed in dotted decimal notation.
> local-address local_addr
> Specifies the IP address of the interface in the destination context of the GGSN originating the GRE tunnel.
> local_addr must be expressed in IPv4 dotted-decimal notation.
> preference num
> Default: 1
> This option can be used to assign a preference to the tunnel.
> preference can be configured to any integer value from 1 to 128.
> Important: Only one GRE tunnel per APN is supported. Therefore, the preference should always be set to “1”.
> Usage
> Subscriber IP payloads are encapsulated with IP/GRE headers and tunneled by the GGSN to an external gateway.
> Example
> The following command configures the system to encapsulate subscriber traffic using GRE and tunnel it from a local address of 192.168.1.100 to a gateway with an IP address of 192.168.1.225:
> tunnel gre peer-address 192.168.1.225 local-address 192.168.1.100 preference 1
> tunnel ipip
> Configures IP-in-IP tunnelling parameters between the GGSN and an external gateway for the APN.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> tunnel ipip peer-address peer_address local-address local_addr [ preference num ]
> no tunnel ipip
> no
> Disables IP-in-IP tunneling for the APN.
> peer-address peer_address
> Specifies the IP address of the external gateway terminating the IP-in-IP tunnel.
> peer_address must be expressed in IPv4 dotted-decimal notation.
> local-address local_addr
> Specifies the IP address of the interface in the destination context of the GGSN originating the IP-in-IP tunnel.
> local_addr must be expressed in IPv4 dotted-decimal notation.
> preference num
> Default: 1
> If multiple tunnels will be configured, this option can be used to assign a preference to the tunnel.
> preference can be configured to any integer value from 1 to 128.
> Usage
> Subscriber IP payloads are encapsulated with IP-in-IP headers and tunneled by the GGSN to an external gateway.
> Example
> The following command configures the system to encapsulate subscriber traffic using IP-in-IP and tunnel it from a local address of 192.168.1.100 to a gateway with an IP address of 192.168.1.225:
> tunnel ipip peer-address 192.168.1.225 local-address 192.168.1.100 preference 1
> tunnel ipsec
> This command configures sessions for the current APN to use an Internet Protocol Security (IPSec) tunnel based on the IP pool corresponding to the subscribers assigned IP address.
> Product
> GGSN
> Privilege
> Security Administrator, Administrator
> Syntax
> [ no ] tunnel ipsec use-policy-matching-ip-pool
> no
> Disables the use of the IPSec policy that matches the IP pool that the assigned IP address relates to.
> Usage
> Use this command to set the APN to use an IPSec policy that is assigned to the IP pool that the subscribers assigned IP address relates to.
> Example
> The following command enables the use of the policy that matches the IP pool address:
> tunnel ipsec use-policy-matching-ip-pool
> tunnel l2tp
> Configures Layer 2 Tunnelling Protocol (L2TP) parameters between the GGSN and an external gateway for the APN.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> tunnel l2tp [ peer-address lns-address [ [ encrypted ] secret l2tp_secret ] [ preference num ] [ tunnel-context name ] [ local-address ip-address ] [ crypto-map map_name { [ encrypted ] isakmp-secret crypto_secret } ] [ local-hostname hostname ]
> no tunnel [ peer-address lns-address]
> no
> Disables L2TP, or secure L2TP tunneling for the APN if a specific peer-address is not specified, or, if a peer-address is specified, this keyword removes the peer-address configuration from the APN.
> peer-address lns-address
> Specifies the IP address of the LNS node that the LAC service connects to.
> lns-address must be expressed in IPv4 dotted-decimal notation.
> Important: A maximum of four LNS peers can be configured per APN.
> encrypted
> This keyword is intended only for use by the system while saving configuration scripts. The system displays the encrypted keyword in the configuration file as a flag that the variable following the secret keyword is the encrypted version of the plain text secret. Only the encrypted secret is saved as part of the configuration file.
> secret l2tp_secret
> Specifies the shared secret (password) between the L2TP Access Concentrator (LAC) service (configured on the system) and the LNS node.
> l2tp_secret must be an alphanumeric string of 1 through 127 characters and is case sensitive.
> preference num
> Default: 1
> Specifies the preference of the tunnel if the LAC service communicates with multiple LNS nodes.
> preference can be configured to any integer value from 1 to 128.
> tunnel-context name
> Specifies the name of the destination context on the system in which the LAC service(s) is configured.
> name must be an alphanumeric string of 1 through 79 characters and is case sensitive.
> Important: If this option is not configured, the system will attempt to determine the name of the destination context from the ip context-name parameter configured for the APN.
> local-address ip-address
> Specifies the IP address of an interface that is bound to a LAC service. This is a mechanism to dictate which LAC service to use to facilitate the subscriber’s L2TP session.
> address is the IP address of the interface in IPv4 dotted-decimal notation.
> Important: If the address configured does not exist or is not bound to a LAC service, the system will automatically choose a LAC service to use.
> local-hostname hostname
> This keyword configures LAC-Hostname to be used for the communication with the LNS peer for this APN.
> When Tunnel parameters are not received from the RADIUS server, Tunnel parameters configured in APN are considered for the LNS peer selection. When APN Configuration is selected, local-hostname configured with the “tunnel l2tp” command in the APN for the LNS peer will be used as a LAC Hostname.
> Important: For this configuration to take effect allow aaa-assigned-hostname command, which is used to configure LAC-Hostname based on the “Tunnel-Client-Auth-ID” attribute received from the RADIUS server, needs to be configured in the LAC Service Configuration mode.
> hostname is name of the local host for the LNS peer and must be an alphanumeric string of 1 through 127 characters.
> When Tunnel parameters are not received from the RADIUS Server, Tunnel parameters configured in APN will be considered for the LNS peer selection. When APN Configuration is selected, the local hostname hostname configured with this command in the APN for the LNS peer will be used as a LAC Hostname.
> crypto-map map_name { [ encrypted ] secret crypto_secret }
> Configures the IPSec crypto-map policy that is to be associated with this L2TP tunnel configuration for secure L2TP.
> map_name is the name of a crypto-map policy configured on the system expressed as an alphanumeric string of 1 through 127 characters and is case sensitive.
> encrypted is intended only for use by the system while saving configuration scripts. The system displays the encrypted keyword in the configuration file as a flag that the variable following the secret keyword is the encrypted version of the plain text secret. Only the encrypted secret is saved as part of the configuration file.
> secret specifies the secret associated with the crypto-map policy. crypto_secret can be from 0 to 255 bytes.
> Usage
> This command can be used to configure the GGSN to tunnel subscriber traffic to one or more peer LNSs using L2TP or L2TP with IPSec.
> When using L2TP, the system functions as a L2TP access Concentrator (LAC) and tunnels traffic to a peer L2TP Network Server (LNS). LAC functionality is supported through the configuration of LAC Services defined in destination contexts configured on the system.
> When using crypt-map policies, the system functions in the same fashion as with L2TP, with the exception that the encapsulated L2TP traffic is further encrypted using IPSec. IPSec functionality is supported through the definition of crypto maps configured in the same destination context as the LAC services.
> A maximum of four LNS peers can be configured per APN. If no peer is specified, the system will use the LAC Service(s) configured in the same destination context as the APN.
> Example
> The following command configures L2TP support for the APN. It configures the APN to tunnel traffic to an LNS with an IP address of 192.168.1.50 through a LAC service bound to an interface with an IP address 192.168.1.201 configured in a destination context on the system called pdn1. The shared secret between the system and the LNS is 5496secRet. This will be the only LNS configured so the default preference of 1 will not be changed.
> tunnel l2tp peer-address 192.168.1.50 secret 5496secRet tunnel-context pdn1 local-address 192.168.1.201
> virtual-apn
> Configures references (or links) to alternative APNs to be used for PDP context processing based on properties of the context. This command also configures the APN properties against which the PDP contexts are compared.It also supports roaming and visiting subscribers.
> Product
> GGSN, P-GW
> Privilege
> Security Administrator, Administrator
> Syntax
> virtual-apn { gcdr apn-name-to-be-included { Gn | virtual } | preference priority apn apn_name [ access-gw-address { ip_address | ip_address/mask } | bearer-access-service svc_name | cc-profile cc_profile_index [ rat-type { eutran | gan | geran | hspa | utran | wlan } ] | domain domain_name | mcc mcc_number mnc mnc_number [ cc-profile cc_profile_index ] | [ msin-range from msin_range_from to msin_range_to ] | [ rat-type { eutran | gan | geran | hspa | utran | wlan } ] | msisdn-range { from msisdn_start_range to msisdn_to_range | rat-type { eutran | gan | geran | hspa | utran | wlan } } | rat-type { eutran | gan | geran | hspa | utran | wlan } | roaming-mode { home | roaming | visiting } ] }
> default virtual-apn gcdr apn-name-to-be-included
> no virtual-apn preference priority
> default
> The virtual APN name is sent in G-CDRs.
> no
> Removes a previously configured “virtual” APN.
> gcdr apn-name-to-be-included { gn | virtual }
> If virtual APN to be used is configured, the virtual APN name is sent in G-CDRs. Provides an option to either send the virtual APN name or the Gn APN name (that comes from the SGSN) in G-CDRs.
> Gn: the APN received in the Create PDP Context Request message from SGSN.
> virtual: the APN selected by the GGSN/P-GW. This is the default.
> preference priority
> Specifies the order in which the referenced APNs are compared by the system.
> priority specifies the order and can be configured to any integer value from 1 (highest priority) to 1000 (lowest priority).
> apn apn_name
> Specifies the name of an alternative APN configured on the system that is to be used for PDP contexts with matching properties.
> apn_name is the name of the alternative APN expressed as an alphanumeric string of 1 through 62 alphanumeric characters and is case insensitive. It may also contain dots ( . ) and/or dashes ( - ).
> access-gw-address { ip_address | ip_address/mask }
> Specifies the Access gateway (SGSN/SGW/Others) address for the virtual APN.
> ip_address is an IP address entered in IPv4 dotted-decimal or IPv6 colon-separated notation.
> ip_address/mask is the IP address in IPv4 dotted-decimal or IPv6 colon-separated notation with network-host mask separation.
> bearer-access-service svc_name
> Specifies the Bearer Access Service name for the virtual APN. This service name is unique across the context.
> svc_name is an alphanumeric string of 1 through 63 characters.
> cc-profile cc_profile_index
> Specifies the APN for charging characteristics (CC)-profile index.
> cc_profile_index is an integer from 1 to 15.
> domain domain_name
> Specifies the subscriber’s domain name (realm).
> domain_name must be an alphanumeric string of 1 through 79 characters, is case sensitive and can contain all special characters.
> mcc mcc_number
> Specifies the mobile country code (MCC) portion of the PLMN’s identifier.
> mcc_number is the PLMN MCC identifier and can be configured to any 3-digit integer value between 100 and 999.
> mnc mnc_number
> Specifies the mobile network code (MNC) portion of the PLMN’s identifier.
> mnc_number is the PLMN MNC identifier and can be configured to any 2- or 3-digit integer value between 00 and 999.
> msin-range{ from msin_range_from to msin_range_to| rat-type { eutran | gan | geran | hspa | utran | wlan } }
> Specifies the APN for this IMSI MSIN range or the radio access technology (RAT) type.
> msin_range_from is the start prefix of the IMSI MSIN range and can be configured between 0 and 9999999999.
> msin_range_to is the end prefix of the IMSI MSIN range and can be configured as a string of size 1 to 10 digits between 0 and 9999999999.
> msin-range should follow the following rules

> • | Start prefix (such as msin_range_from) and end prefix (such as msin_range_from) must be of the same length.

> • | Total length of mcc + mnc + msin-range <= 15 digits.

> • | For a given combination of mcc + mnc + msin-range (start-end prefix), overlapping range is not allowed.

> rat-type is the type of the radio access technology based on which the APN would be specified.
> msisdn-range from msisdn_start_range to msisdn_to_range
> Specifies the APN for this MSISDN range.
> msisdn_start_range is the starting MSISDN number which a string of size 2 to 15 and its value ranges between 00 and 999999999999999.
> msisdn_to_range is the ending MSISDN number which is also a string of size 2 to 15 and its value ranges between 00 and 999999999999999.
> rat-type { eutran | gan | geran | hspa | utran | wlan }
> is the type of the radio access technology based on which the APN would be specified. The available options include:

> • | eutran

> • | gan

> • | geran

> • | hspa

> • | utran

> • | wlan

> roaming-mode { home | roaming | visiting }
> Supports separate PDP context processing for roaming, visiting, and home subscribers. It supports separate rule type along with domain, imsi, and sgsn-address types.
> Usage
> This command simplifies the configuration process for mobile operators allowing them to provide subscribers with access to a large number of packet data networks, characterized by APN templates, while only having to configure a small number of APNs on the HLR.
> Each “virtual” APN is a reference, or a link, to an alternate APN configured on the system. Each reference is configured with a rule that subscriber PDP contexts are compared against and a priority that dictates the comparison order. The references works as follows:
> 1. A Create PDP Context Request message is received by the GGSN. The message specifies an APN configured in the HLR.
> 2. The GGSN determine whether its own matching APN configuration contains “virtual” APN references.
> 3. The system determines the priority of the references and compares the associated information pertaining to the PDP context against the configured rules.
> 4. If the rule matches, the parameters in the APN specified by the reference are applied to the PDP context. If not, the rules in the reference with the next highest priority are compared against the PDP context. This occurs until a match is found. If none of the references match, then the parameters within the current APN are applied to the PDP context.
> The GGSN supports a maximum of 1023 Virtual APN mapping configurations in a system. A single Gn APN can be configured with up to 1000 mapping rules. Multiple Gn APNs are supported - each requiring Virtual APN mapping configurations. The limit imposed is that the total virtual APN mappings across all Gn APNs should not exceed 1023.
> The functionality provided by this command can also be used to restrict access to particular APNs. To restrict access based on a particular rule (either domain name or mobile country code/mobile network code), the “virtual” APN reference should refer to an APN that not is configured on the system and contain the desired rule. All PDP contexts matching the configured rule would then be denied with a reason code of 219 (DBH), Missing or Unknown APN.
> Example
> The following commands configure two “virtual” APNs, priority 1 references the bigco APN with a domain rule of bigco.com, priority 2 references the bigtown APN with a mobile country code rule of 100 and a mobile network code rule of 50.
> virtual-apn preference 1 apn bigco domain bigco.com
> virtual-apn preference 2 apn bigtown mcc 100 mnc 50 msin-range from 4000000000 to 4999999999
> virtual-apn preference 3 apn bigco.com sgsn-address 192.168.62.2
> virtual-apn preference 4 apn bigco.co.kr sgsn-address 192.168.60.2/24

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