GGSN Service Configuration Mode Commands

The Gateway GPRS Support Node (GGSN) Configuration Mode is used to create and manage GGSN services within the current context.

IMPORTANT:

The commands or keywords/variables that are available are dependent on platform type, product version, and installed license(s).

accounting

Configures the name of the context configured on the system that processes accounting for PDP contexts handled by this GGSN service.

Platform:

ASR 5000

Product:

GGSN


Privilege:

Security Administrator, Administrator


Syntax 
accounting context context_name

no accounting context
no

Removes a previously configured accounting context.

context_name

Specifies the name of the context to be used for accounting. context_name must be an alphanumeric string of 1 through 79 characters that is case sensitive.


Usage:

By default, the system attempts to use the same context as the one in which the GGSN service is configured for accounting purposes. This command can be used to either change the system’s default behavior, or allow GPRS Tunneling Protocol Prime (GTPP) accounting to a charging gateway (CG).

By default when GTPP accounting is used, accounting records will be sent to the accounting servers configured in whichever context the GGSN service is configured. This command may be used to override that default.


Example:
The following command configures the GGSN service’s accounting context to be plmn1:
accounting context plmn1
associate gtpu-service

This command associates a previously configured GTP-U service to bind the GGSN service with a peer. A GTP-U service must be configured in Context Configuration mode before using this configuration.

Platform:

ASR 5000

Product:

GGSN


Privilege:

Security Administrator, Administrator


Syntax 
associate gtpu-service svc_name

noassociate gtpu-service
no

Removes the associated GTP-U service from this GGSN service configuration.

svc_name

Identifies the name of the GTP-U service preconfigured in Context Configuration mode to associate with a GGSN service. svc_name is an alphanumeric string from 1 through 63 characters.


Usage:

Use this command to configure GTP-U data plan between GGSN service and peer node. The service defined for GTP-U can be configured in Context configuration mode.


Example:
Following command associates GTP-U service named gtpu-hnb1 with specific GGSN service.
associate gtpu-service
gtpu-hnb1
associate pgw-service

This command enables a previously configured P-GW service to which handover will be done by the GGSN service. The P-GW service must be configured in Context Configuration mode before using this configuration.

Platform:

ASR 5000

Product:

GGSN


Privilege:

Security Administrator, Administrator


Syntax 
associate pgw-service svc_name

no associate pgw-service
no

Removes the associated P-GW service from this GGSN service configuration.

svc_name

Identifies the name of the P-GW service preconfigured in Context Configuration mode to which handover will be done.

The svc_name must be an alphanumeric string from 1 through 63 characters.


Usage:

Use this command to allow enabling/disabling bearer handover from GGSN to a P-GW service. The service defined for P-GW can be configured in Context configuration mode.

The P-GW’s eGTP service should have the same bind address as GGSN service and P-GW and GGSN should share same GTP-U, otherwise handover will fail.


Example:
Following command enables P-GW service named pgw-test handover with specific GGSN service.
associate pgw-service
pgw-test
authorize-with-hss

This command enables or disables subscriber session authorization via a Home Subscriber Server (HSS) over an S6b Diameter interface. This feature is required to support the interworking of GGSN with P-GW and HA.

Platform:

ASR 5000

Product:

GGSN


Privilege:

Security Administrator, Administrator


Syntax 
[ default | no ] authorize-with-hss
no

Disables the default authorization of subscriber over S6b interface. Resets the command to the default setting of “authorize locally” from an internal APN authorization configuration.


Usage:

Use this command to enable/disable the authorization support for subscriber over S6b interface, which is used between GGSN and the 3GPP AAA to exchange the information related to charging, P-CSCF discovery, etc.

By use of this feature allows the GGSN service to interact with HSS over S6b interface through Diameter configuration which is already configured on the system.

IMPORTANT:

Diameter configuration must be available before enabling this command. For more information of Diameter interface configuration, refer Diameter Endpoint Configuration Mode Commands chapter.

IMPORTANT:

This command is a license-enabled feature.


Example:
The following command enables the subscriber authorization via an HSS over an S6b Diameter interface to provide session interoperability between GGSN and PGW and HA in this GGSN service:
authorize-with-hss
bind

Binds the GGSN service to a logical IP interface serving as the Gn interface. Specifies the maximum number of subscribers that can access this service over the interface.

Platform:

ASR 5000

Product:

GGSN


Privilege:

Security Administrator, Administrator


Syntax 
bind address ip_address max [ total-pdp-contexts max_total | ppp-pdp-contexts max_ppp ]

no  bind address address
no

Removes a previously configured binding for the GGSN service.

ip_address

Specifies the IP address (address) of the interface configured as the Gn interface. ip_address is specified in IPv4 dotted-decimal notation.

max

Configures the maximum limits for total/PPP PDP contexts.

total-pdp-contexts max_total

Default: 1500000

Specifies the maximum number of PDP contexts (both IP and PPP) that can access this service on this interface.

count is an integer from 0 through 4000000.

IMPORTANT:

The maximum number of supported subscriber contexts varies based on the installed session capacity license and the number of active packet processing cards installed in the system. Note that each PPP PDP context is treated as two IP PDP contexts. Refer to the license key command for additional information.

ppp-pdp-contexts max_ppp

Default: 750000

Specifies the maximum number of PPP PDP contexts that can access this service on this interface.

count can be configured to an integer from 0 and 2500000.

IMPORTANT:

The maximum number of supported subscriber contexts varies based on the installed session capacity license and the number of active packet processing cards installed in the system. Refer to the license key command for additional information.


Usage:

Used to associate or tie the GGSN service to a specific logical IP address. The logical IP address or interface takes on the characteristics of a Gn interface. Only one interface can be bound to a service. The interface should be configured prior to issuing this command.

This command also sets a “soft” limit as to the number of simultaneous subscriber contexts that can be facilitated by the service/interface at any given time. 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.

When configuring the total-pdp-contexts or ppp-pdp-contexts options, be sure to consider the following:
  • Each PPP PDP context is treated as two IP PDP contexts due to the additional CPU and memory resources required
  • The total number of configured Gn interfaces
  • The maximum number of subscriber PDP contexts that all of the interfaces may handle during peak busy hours
  • The average bandwidth for each of the PDP contexts
  • The type of physical port (10/100Base-T or 1000Base-Tx) to which these interfaces are bound

Taking these factors into account and distributing your subscriber contexts across all available interfaces allows you to configure your interfaces to optimally handle PDP contexts without degrading performance.


Example:
The following command would bind the logical IP interface with the address of 192.168.3.1 to the GGSN service and specifies that a maximum of 600 simultaneous subscriber sessions can be facilitated by the interface/service at any given time:
bind address 192.168.3.1
max-subscribers 600
The following command disables a binding that was previously configured:
no bind address
cc behavior

Configures the 3GPP behavior bits associated with the GGSN’s charging characteristics (CC).

Platform:

ASR 5000

Product:

GGSN


Privilege:

Security Administrator, Administrator


Syntax 
cc behavior  | no-records nr_value

{ default | no } cc behavior
no-records nr_value

Default: 0 (disabled)

Specifies the behavior bit upon which the GGSN ceases sending accounting records to a server.

nr_value can be configured to an integer from 1 through 12 corresponding to the 12 behavior bits – B1 through B12.


Usage:

3GPP standards after 3GPP R98 included 12 behavior bits as part of GGSN charging characteristics. Like the charging characteristics profile index, the behavior bits are sent by the SGSN to the GGSN in the Create PDP Context request message.

This command configures the behavior bits for each of the conditions described.


Example:
The following command configures a behavior bit of 10 for no-records:
cc behavior no-records 10
cc profile

Configures the charging characteristic (CC) profile index properties.

Platform:

ASR 5000

Product:

GGSN


Privilege:

Security Administrator, Administrator


Syntax 
cc profile index [ buckets number | interval time [ downlink down_octets uplink  up_octets | total total_octets ] | prepaid { prohibited | use-rulebase-configuration } | sgsns  num_changes | tariff time1  mins hours [ time2 mins hours [ time3 mins hours [ time4 mins hours [ time5 mins hours [ time6 mins hours ] ] ] ] | volume { downlink vol_down_octets uplink vol_up_octets | total total_octets } ]

no cc profile index { buckets | interval | prepaid | sgsns | tariff | volume }

default cc profile index
no

Removes a previously configured profile index.

default

Returns the specified cc profile to the original default system settings.

index

Configures a profile index for the parameter to be specified. index can be configured to an integer from 0 through 15.

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.

buckets number

Default: 4

Specifies the number of statistics container changes due to QoS changes or tariff time that can occur before an accounting record should be closed.

number can be configured to an integer from 1 through 4.

interval time [downlink down_octets uplink up_octets | total total_octets ]
Specifies the normal time duration that must elapse before closing an accounting record provided that any or all of the following conditions occur:
  • Downlink traffic volume is reached within the time interval
  • Uplink traffic volume is reached within the time interval
  • Total traffic volume (up and downlink) is reached within the time interval

time is measured in seconds and can be configured to an integer from 60 through 40000000.

down_octets is the downlink traffic volume measured in octets and can be configured to an integer from 0 through 1000000.

up_octets is the uplink traffic volume measured in octets and can be configured to an integer from 0 through 1000000.

total_octets is the total traffic volume measured in octets and can be configured to an integer from 0 through 1000000.

prepaid { prohibited | use-rulebase-configuration }

This command enables or disables prepaid for the specified profile index.

Default: N/A

prohibited: Disable prepaid for the specified profile index.

use-rulebase-configuration: Use the prepaid configuration in the rulebase.

sgsns num_changes

Default: 4

Specifies the number of SGSN changes (such as, inter-SGSN switchovers) resulting in a new RAI (Routing Area Identity) that can occur before closing an accounting record.

num_changes can be configured to an integer from 1 through 15.

tariff time1 mins hours time2 mins hours time3 mins hours time4 mins hours time5 mins hours time6 mins hours

Specifies time-of-day time values to close the current statistics container (but not necessarily the accounting record). Six different tariff times may be specified. If less than six times are required, the same time can be specified multiple times.

IMPORTANT:

The system assumes that the billing system uses the day/date to determine if the statistics container represents an actual tariff period.

For each of the different tariff times, the following parameters must be configured:
  • mins: The minutes of the hour, an integer value from 0 to 59.
  • hours: The hour of the day, an integer value from 0 to 23.
volume {downlink vol_down_octets uplink vol_up_octets | total total_octets }

Specifies the downlink, uplink, and total volumes that must be met before closing an accounting record.

vol_down_octets is measured in octets and can be configured to an integer from 100000 to 4000000000.

vol_up_octets is measured in octets and can be configured to an integer from 100000 to 4000000000.

total_octets is the total traffic volume (up and downlink) measured in octets and can be configured to an integer from 100000 to 4000000000.


Usage:

Charging characteristics consist of a profile index and behavior settings. This command configures profile indexes for the GGSN’s charging characteristics. The GGSN supports up to 16 profile indexes.

This command works in conjunction with the cc-sgsn command located in the APN Configuration Mode that dictates which CCs should be used for subscriber PDP contexts.


Example:
The following command configures a profile index of 10 for tariff times of 7:00 AM and 7:30 PM:
cc profile 10 tariff
time1 0 7 time2 30 19 time3 0 7 time4 30 19
default

Sets/restores the default value assigned for the specified parameter.

Platform:

ASR 5000

Product:

GGSN


Privilege:

Security Administrator, Administrator


Syntax 
[ default ] { cc { behavior | profile index } | echo-interval | gtpu
echo-interval | gtpu reorder { context | sequence-numbers | timeout } | guard-interval | ip { local-port
gtpc-v1 |  qos-dscp } | max-retransmissions | plmn { unlisted-sgsn } | setup-timeout | timeout }
cc { behavior | profile index }
Restores the GGSN’s charging characteristics parameters to the following default settings:
  • behavior: Restores all behavior parameters to their default values of 0 (disabled).
  • profile: For the specified index, the following defaults are applied: buckets: 4 interval: Disabled volume: Disabled sgsns: 4 tariff-time: Disabled
echo-interval

Restores the GTP echo-interval parameter to its default setting of 60.

gtpu echo-interval

Restores the GTPU echo-interval parameter to its default setting of 60.

gtpu reorder { context | sequence-numbers | timeout }
Restores the gtpu reordering parameters to the following default settings:
  • gtpu reorder context: Disabled
  • gtpu reorder sequence-numbers: Disabled
  • gtpu reorder timeout: 100 milliseconds
gtpu udp-checksum insert

Restores the GGSN gtpu udp-checksum parameter to its default setting of enabled.

guard-interval

Restores the GGSN guard-interval parameter to its default setting of 100.

ip {local-port gtpc-v1 | qos-dscp }
Restores the GGSN ip parameters to the following default setting:
  • local-port gtpc-v1: 2123
  • qos-dscp: conversational ef streaming af11 interactive af21 background be
max-retransmissions

Restores the GGSN max-retransmissions parameter to its default setting of 4.

plmn { unlisted-sgsn }

Restores the GGSN plmn unlisted-ggsn parameter to its default setting of reject.

setup-timeout

Restores the GGSN setup-timeout parameter to its default setting of 60.

timeout

Restores the GGSN timeout parameter to its default setting of 5.


Usage:

After the system has been modified from its default values, this command is used to set/restore specific parameters to their default values.


Example:
The following command restores the GGSN service’s guard interval parameter to its default setting:
default guard-interval
dns-client

This command defines the context name where a DNS client is configured. It associates an existing DNS client configuration with the GGSN to perform a DNS query for P-CSCF, if a P-CSCF query request in an AAA message is received from the Diameter node.

Platform:

ASR 5000

Product:

All


Privilege:

Security Administrator, Administrator


Syntax 
dns-client context dns_ctxt_name

{ no | default } dns-client context
no

Removes the association of DNS context which was configured to perform DSN query in this GGSN service.

default

Sets the default context for the DNS client.

dns_ctxt_name

Specifies the name of the context in which a DNS client configuration is present. Typically this should be the same context in which this GGSN service is configured.

dns_ctxt_name is a context name and must be alphanumeric string of 1 through 79 characters.


Usage:

Use this command to associate a DNS client configuration to perform DNS query used for the resolution of P-CSCF query received in AAA message from Diameter peer, on the basis of DNS client parameters configured in a context.

A DNS client configuration must be present in the same context as GGSN service before enabling this command to perform DNS query for P-CSCF.

IMPORTANT:

This command is a license-enabled feature.


Example:
The following command associates a DNS client configuration to perform DNS query for P-CSCF with this GGSN service which is configured in same context as GGSN service:
default dns-client context
echo-interval

Configures the rate at which GPRS Tunneling Protocol (GTP) v1-C Echo packets are sent from the GGSN service to the SGSN.

Platform:

ASR 5000

Product:

GGSN


Privilege:

Security Administrator, Administrator


Syntax 
echo-interval seconds

{ default | no } echo-interval
default

Configures the default value (60 seconds) for echo interval.

no

Disables the sending of GTPv1-C Echo packets.

seconds

Default: 60

Specifies the frequency at which the GGSN service sends GTPv1-C Echo packets to the SGSN(s) it is configured to communicate with.

seconds is measured in seconds and can be configured to an integer from 60 through 3600.


Usage:

Use this command to adjust the rate at which the GGSN sends these packets. GTPv1-C Echo packets are used to detect whether SGSNs that the GGSN service is communicating with, has become unresponsive or has rebooted.

The system initiates this protocol for each of the following scenarios:
  • Upon system boot
  • Upon the configuration of a new SGSN on the system using the sgsn address command as described in this chapter
  • Upon the execution of the path failure detection policy as described in path-failure command of this chapter

The echo-interval command is used in conjunction with the max-retransmissions and retransmission-timeout commands as described in this chapter.

In addition to receiving an echo response for this echo protocol, if GGSN receives a Node Alive Request message or a Echo Request message from a presumed dead SGSN, it will immediately assume the SGSN is active again.

If the GGSN discovers that an SGSN has become unresponsive, it will terminate all PDP contexts that had been established with the SGSN.


Example:
The following command configures the GGSN service to send GTP Echo packets every 120 seconds:
echo-interval 120
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.

fqdn

This command defines Fully Qualified Domain Name (FQDN) which would be used for authorization over S6b interface between GGSN and 3GPP AAA/HSS.

Platform:

ASR 5000

Product:

All


Privilege:

Security Administrator, Administrator


Syntax 
fqdn host  host_name realm realm_id

{ no | default } fqdn
no

Removes the configured FQDN host name and realm ID from the GGSN service.

default

Sets the system to default mode for this command and configures the host and realm ID value to NULL.

host host_name

Specifies the name of the host to be used for authorization over an S6b interface to a 3GPP AAA server/HSS from the GGSN service.

host_name is a unique node name for authorization over the S6b interface from this GGSN service.

host_name must be an alphanumeric string of 1 through 127 characters. Punctuation marks are allowed.

realm realm_id

Specifies the realm as an FQDN to be used for authorization over S6b interface with 3GPP AAA server/HSS from GGSN service. The realm may typically be a company or service name.

realm_id is a unique identifier configured for the authorization over S6b interface from this GGSN service, expressed as an alphanumeric string of 1 through 127 characters. Punctuation marks are allowed.

host_name


Usage:

Use this command to define host and realm as the FQDN for a 3GPP AAA server/HSS that would be used for authorization over an S6b interface with the GGSN. The realm specified as an FQDN may typically be a company or service name.

By default the FQDN host and realm will be NULL

IMPORTANT:

This command is a license-enabled feature.


Example:
The following configures the hss1 as host name and xyz.com as realm to support authorization over an S6b from this GGSN service:
fqdn host hss1 realm xyz.com
gtpc nsapi-in-create-pdp-response

This command excludes or includes the optional information element (IE) Network Service Access Point Identifier (NSAPI) within “Create PDP Context Response” messages in GTP-C.

Platform:

ASR 5000

Product:

GGSN


Privilege:

Security Administrator, Administrator


Syntax 
[ default | no ] gtpc
nsapi-in-create-pdp-response
default

Sets the default mode for GTP-C messages not to include the NSAPI IE in “Create PDP Context Response” messages.

no

Removes the preconfigured mode for GTP-C messages; the GTP-C message will not include the NSAPI IE in “Create PDP Context Response” messages. By default it is disabled.


Usage:

Use this command to exclude or include the NSAPI IE in “Create PDP Context Response” GTP-C messages received from the SGSN.


Example:
The following command configures the GGSN service to include the optional NSAPI IE in “Create PDP Context Response” messages:
gtpc nsapi-in-create-pdp-response
gtpc private-extension

This command includes customer-specific private extensions in GTP-C messages.

Platform:

ASR 5000

Product:

GGSN


Privilege:

Security Administrator, Administrator


Syntax 
gtpc private-extension { { { focs | odb } access-list acl_name in disconnect-on-violation } | ggsn-preservation-mode | loss-of-radio-coverage | none }

default gtpc private-extension

no gtpc private-extension [ focs | ggsn-preservation-mode | loss-of-radio-coverage ]
default

Sets the default mode for GTP-C messages. By default it is disabled.

no

Disables the configured private extensions for GTP-C messages.

{focs | odb} access-list acl_name in disconnect-on-violation

Configures the Free-Of-Charge-Service (FOCS) and Operator Determined Barring (ODB) extensions for all packet-oriented services as defined by operators.

focs: Enables or disables Free of Charge Services for the subscriber who has no credit, and also takes the access-list acl_name to be applied for FOCS.

odb: Enables or disables “all packet oriented service barred” for the subscriber, and also takes the access-list acl_name to be applied for ODB.

acl_name is the name of a configured access control list (ACL) for this service.

IMPORTANT:

These are the customer-specific keywords and need customer-specific license to use them.

ggsn-preservation-mode

Enables the processing of customer-specific private extension in Update PDP Context requests. This extension indicates whether the subscriber is active or idle, and whether RAN resources have been released. It also indicates the desired “type” of preservation mode behavior.

When ggsn-preservation-mode is configured, different types of accounting records are generated based on the “type” of mode. To enable the generation of different accounting records, the trigger for preservation mode must be configured for RADIUS or GTPP for that accounting protocol. If that trigger is not configured, there will be no change in the generation of accounting records.

IMPORTANT:

This is a customer-specific keyword and needs customer-specific license to use this feature.

loss-of-radio-coverage

Enables the protection against overcharging a subscriber due to loss of radio coverage (LORC) in a GGSN service. It also enables the system to understand the private extension for LORC) in GTP-C Update PDP Context messages from the SGSN.

IMPORTANT:

This is a license enabled keyword and need feature-specific license to use it.

none

Removes the private extensions from record which are from GTP-C messages received from the SGSN.


Usage:

Use this command to configure the processing of private extensions within GTP-C messages received from the SGSN. It also configures the customer specific features, such as preservation mode for GGSN service.

Overcharging protection (LORC) is a solution which provides the ability to accurately bill customers.

This implementation is based on Cisco-specific private extension to GTP messages and/or any co-relation of G-CDRs and S-CDRs. It also does not modify any RANAP messages.

IMPORTANT:

This is a license enabled command that requires installation of feature-specific licenses to use this command.


Example:
The following command configures the GGSN service to record the private extension for protecting the subscribers from overcharging during loss of radio coverage:
gtpc private-extension
loss-of-radio-coverage
gtpc ran-procedure-ready-delay

This command configures the GGSN to enable the RAN Procedure Ready feature for the particular GGSN service and specify the timeout period for the RAN procedure timer in the GGSN. This timer starts on arrival of every secondary Create PDP Context request.

Platform:

ASR 5000

Product:

GGSN


Privilege:

Security Administrator, Administrator


Syntax 
gtpc ran-procedure-ready-delay [ timeout dur ]

{ default | no } gtpc
ran-procedure-ready-delay
default

Sets the default mode of RAN Procedure Ready feature for this GGSN service. By default it is disabled.

no

Disables the RAN Procedure Ready feature for this GGSN service. By default it is disabled.

timeout dur

Default: 10

Specifies the timeout duration (in seconds) for the RAN procedure timer. This timer starts on the arrival of every secondary “Create PDP Context Request” message.

This is an optional keyword. If no timeout period is specified, the default value is 10 seconds.

dur must be an integer from 1 through 40.


Usage:

Use this command to enable the RAN Procedure Ready feature for this GGSN service and specify the timeout period for the RAN procedure timer. This timer starts on the arrival of every secondary “Create PDP Context Request” message.

The GGSN waits until the Radio Access Bearer setup is completed and “Update PDP Context Request” is sent by the SGSN. If any downlink data is received before arrival of the “Update PDP Context Request” or before timer expiry, the downlink packets will be queued or buffered.

If the buffer becomes full (total buffer limit is of 1024 packets), all newly arriving packets are dropped.

The RAN Procedure Ready feature supports the following scenarios when RAB setup timer starts at the GGSN:
  • If the GGSN receives the “Update PDP Context Request” before timer expiry, the GGSN stops the timer, sends all the queued/buffered packets in ‘first-in first-out’ manner and disables buffering of subsequent downlink data.
  • If the GGSN receives the “Update PDP Context Request” before the timer expires, it processes the “Update PDP Context Request” as usual, but does not disable the buffering of downlink data. It then waits for another “Update PDP Context Request” to come with the RAN Procedure Ready set, or waits for timer to expire.
  • If the GGSN does not receive the “Update PDP Context Request” with RAN Procedure Ready set before timer expiry, the timer is fired and the GGSN starts sending all queued packets and disables buffering of subsequent downlink data (assuming that the corresponding SGSN does not support this feature).
  • If the timer has expired and the GGSN receives an “Update PDP Context Request” for a secondary PDP context with or without RAN Procedure Ready bit set, the UPC will be processed normally without buffering the packets.

IMPORTANT:

This feature does not affect the Enhanced Charging Service or deep packet inspection (DPI) since the buffering of downlink data is done before sending it to an ACSMgr.

IMPORTANT:

During an SGSN handoff scenario all packets are processed normally and the downlink packets are buffered until the timer expires.


Example:
The following command configures the GGSN service to enable the RAN Procedure Ready feature and specify the timeout period as 20 seconds for the RAN Procedure timer in GGSN:
gtpc ran-procedure-ready-delay
timeout 20
gtpu echo-interval

This command is obsolete and now available for configuration in GTP-U service configuration mode.

guard-interval

Configures the time period after which a redundant PDP context request received from an SGSN is treated as a new request rather than a re-send of a previous request.

Platform:

ASR 5000

Product:

GGSN


Privilege:

Security Administrator, Administrator


Syntax 
guard-interval guard_time

{ default | no } 
guard-interval
default

Configures the default value for guard-interval function for the GGSN service.

no

Disables the guard-interval function for the GGSN service.

guard_time

Default: 100

Specifies the amount of time that must pass before a GGSN service treats a redundant PDP context request as a new request instead of a re-send of a previous request.

guard_time is measured in seconds and can be configured to an integer from 10 through 3600.


Usage:

The guard interval is used to protect against replay attacks. Without a guard interval configured, information from a valid PDP context request could be used to gain un-authorized network access.

If the GGSN service receives a PDP context request in which the International Mobile Subscriber Identity (IMSI), the Network Service Access Point Identifier (NSAPI), the end user IP address, and the GTP sequence number are identical to those received in a previous request, the GGSN treats the new request as a re-send of the original. Therefore, information from a valid PDP context request could be collected and re-sent at a later time by an un-authorized user to gain network access.

Configuring a guard interval limits the amount of time that the information contained within a PDP context request remains valid.


Example:
The following command configures the GGSN service with a guard interval of 60 seconds:
guard-interval 60
ip local-port

Configures the local User Datagram Protocol (UDP) port for the Gn interfaces’ GTP-C socket for GTPv1.

Platform:

ASR 5000

Product:

GGSN


Privilege:

Security Administrator, Administrator


Syntax 
ip local-port gtpc-v1 port#

default ip local-port
gtpc-v1
default

Configures the default value for the local UDP port for GTP Version 1 control messaging for this GGSN service.

gtpc-v1 port#

Default: 2123

Specifies the UDP port number for GTPv1 GTPC sockets.

port# can be configured to an integer from 1 through 65535.


Usage:

By default, the GGSN service attempts to use GTPv1 when communicating with SGSNs. This parameter configures the UDP port over which the GTP control (GTP-C) sockets are sent.

If an SGSN only supports GTPv0, the GGSN service automatically switches to GTPv0 when communicating with this SGSN. In the scenario, the GGSN service communicates with the SGSN on UDP port 3386 and does not have a GTP-C socket.

IMPORTANT:

The UDP port setting on the SGSN must match the local-port setting for the GGSN service on the system in order for the two devices to communicate.


Example:
The following command configures the GGSN service to use UDP port 2500 for exchanging GTPC sockets with SGSNs when using GTPv1:
ip local port 2500
ip qos-dscp

Configures the quality of service (QOS) differentiated service code point (DSCP) used when sending data packets over the Gn interface.

Platform:

ASR 5000

Product:

GGSN


Privilege:

Security Administrator, Administrator


Syntax 
ip qos-dscp { qci { 1 { dscp } | 2 { dscp } | 3 { dscp } | 4 { dscp } | 5 { dscp | allocation-retention-priority } | 6 { dscp | allocation-retention-priority } | 7 { dscp | allocation-retention-priority } | 8 { dscp | allocation-retention-priority } | 9 { dscp }} | gtpc } +

no ip qos-dscp { qci { 1 | 2 | 3 | 4 | 5 { allocation-retention-priority | dscp } | 6 { allocation-retention-priority | dscp } | 7 { allocation-retention-priority | dscp } | 8 { allocation-retention-priority | dscp } | 9 } | gtpc } +
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 integer 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.

The following table shows the DSCP value matrix for allocation-retention-priority.


Table 1. Default DSCP Value Matrix
Allocation Priority 1 2 3
Traffic Handling Priority . . .
1 ef ef ef
2 ef ef ef
3 af21 af21 af21
. af21 af21 af21


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
Default QCI:
  • 1: ef
  • 2: ef
  • 3: af11
  • 4: af11
  • 5: ef
  • 6: ef
  • 7: af21
  • 8: af21
  • 9: be

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)
  • af32: Assured Forwarding 32 PHB
  • af12: Assured Forwarding 12 PHB
  • af33: Assured Forwarding 33 PHB
  • af13: Assured Forwarding 13 PHB
  • af41: Assured Forwarding 41 PHB
  • af21: Assured Forwarding 21 PHB
  • af42: Assured Forwarding 42 PHB
  • af22: Assured Forwarding 22 PHB
  • af43: Assured Forwarding 43 PHB
  • af23: Assured Forwarding 23 PHB
  • be: Best effort forwarding PHB
  • af31: Assured Forwarding 31 PHB
  • ef: Expedited forwarding PHB


+

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 are tagged. The diffserv markings are applied to the outer IP header of every GTP data packet. The diffserv marking of the inner IP header is not modified.

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 the following tables:


Table 2. 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



Table 3. DSCP Precedence
Precedence (low to high) DSCP

0

Best Effort (be)

1

Class 1

2

Class 2

3

Class 3

4

Class 4

5

Express Forwarding (ef)


The DSCP level can be configured for multiple traffic patterns within a single instance of this command.

The no ip qos command can be issued to remove a QOS setting and return it to it’s default setting.


Example:
The following command configures the DSCP level for QCI to be Expedited Forwarding,ef:
ip qos-dscp qci 1 ef
max-retransmissions

Configures the maximum number of times that GTP control packets are retransmitted to an SGSN before it marks it unreachable.

Platform:

ASR 5000

Product:

GGSN


Privilege:

Security Administrator, Administrator


Syntax 
max-retransmissions max_number

default max-retransmissions
default

Configures the default value for maximum retries for GTP control packets for the GGSN service.

max_number

Default: 4

Indicates the maximum number of times that GTP control packets are retransmitted.

max_number can be configured to an integer from 0 through 15.


Usage:

This command is used in conjunction with the timeout command to control the retransmission of GTP control packets when no response is received from an SGSN. It is equivalent to the N3-REQUESTS parameter discussed in 3GPP TS 29.060.

If no response is received from the SGSN prior to the expiration of the timeout value, the GTP control packets are re-sent by the GGSN. This process occurs as many times as allowed by the configuration of this command.

If the max-retransmissions value is exceeded, the GGSN records a “Path Failure” for that SGSN and releases all PDP contexts associated with it.


Example:
The following command configures the maximum number of retransmissions to 8:
max-retransmissions 8
mbms policy

This command enables/disables the Multimedia Broadcast Multicast Services (MBMS) user service support for multicast and/or broadcast mode. It also specifies the policy for MBMS user service mode.

Platform:

ASR 5000

Product:

GGSN


Privilege:

Security Administrator, Administrator


Syntax 
mbms policy { multicst
broadcast | none }

{ no | default } mbms policy
no

Removes or disables the configured MBMS support for multicast and/or broadcast mode in this GGSN service.

default

Restores the default mode of MBMS support in this GGSN service.

multicst broadcast

Enables the MBMS support and configures the policy for multicast and broadcast of user service.


Usage:

Use this command to enable/disable the MBMS user service support for Multicast and/or Broadcast mode. It also specifies the policy for MBMS user service mode.


Example:
The following command enables MBMS support in this GGSN service:
mbms policy multicast broadcast
newcall

This command enables or disables the new call related behavior of this GGSN service when duplicate sessions with the same IP address request are received. This feature is required to support interworking with P-GW and HA.

Platform:

ASR 5000

Product:

GGSN


Privilege:

Security Administrator, Administrator


Syntax 
newcall duplicate-subscriber-requested-address { accept | reject }

default newcall duplicate-subscriber-requested-address
default

Restores the default mode for new call session with the same address request received in this GGSN service. It rejects calls with duplicate address requests.

accept

Sets the system to “accept” another session using the same IP address for a new call. The new session will be created and the old session will be torn down.

Default: Disabled

reject

Rejects new calls with duplicate address requests. This is the default behavior.

Default: Enabled


Usage:

Use this command to enable or disable new call connections when the UE is not able to gracefully disconnect from the Enterprise PDN before attempting to reconnect via another access method. When enabled this command tears down the old session in order to accept the new connection with the same IP address assignment.

This feature also allows the GGSN to accept a request for a static subscriber address, even if the address is already used by another session. If this feature is not enabled, a new request with the same IP address for another session will be rejected.

IMPORTANT:

This command is a license-enabled feature.


Example:
The following command allows the GGSN to accept the duplicate call session request with the same IP address:
newcall duplicate-subscriber-requested-address accept
path-failure

Determines the GTP path-failure behavior on echo/non-echo messages.

Platform:

ASR 5000

Product:

GGSN


Privilege:

Security Administrator, Administrator


Syntax 
path-failure detection-policy
gtp { echo [ non-echo ] | non-echo [ echo ] }

{ no | default } path-failure
detection-policy
no

No defined detection policy means path-failures are not detected.

default

Sets the path-failure detection-policy to GTP in echo mode.

detection-policy gtp {echo [ non-echo ] | non-echo [ echo ] }

Detection-policy is the policy to be used when path-failure is in active state. GTP messages are either gtp(u) (user) or gtp(c) (control) type, and the gtp keyword takes either echo or non-echo as message type.

echo: gtp(u) or gtp(c) message.

non-echo: a message type other than gtp(u) or gtp(c).


Usage:

Under current circumstances, a GGSN shuts down the GTP tunnel if the associated SGSN does not respond to multiple retries of an echo or non-echo message from the GGSN. In this way, a single call failure could be responsible for the loss of all active calls in the tunnel.

This is also an issue when echo is disabled, or when there is very little traffic on the SGSN and the GGSN is configured with large echo intervals.

This behavior adversely impacts the user experience because the customer has to reconnect every time this happens with their SGSN.


Example:
The following example detects path failures when the SGSN fails to respond to multiple echo message retries:
path-failure detection-policy
gtp echo
The following example turns off path-failure detection. On timeout of gtp(c) message retries, the particular context will be purged:
no path-failure detection-policy
plmn id

Configures the GGSN’s public land mobile network (PLMN) identifiers. Up to five PLMN IDs can be configured for each GGSN service.

Platform:

ASR 5000

Product:

GGSN


Privilege:

Security Administrator, Administrator


Syntax 
plmn id mcc mcc_valuemnc mnc_value [ primary ] 

no plmn id mcc mcc_value mnc mnc_value
no

Removes a previously configured PLMN identifier for the GGSN service.

mcc mcc_value

Specifies the mobile country code (MCC) portion of the PLMN’s identifier.

mcc_number is the PLMN MCC identifier and can be configured to an integer between 100 and 999.

mnc mnc_value

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 from 00 through 999.

primary

When multiple PLMN IDs are configured, the primary keyword can be used to designate one of the PLMN IDs to be used for the AAA attribute (3GPP-GGSN-MCC-MNC).


Usage:

The PLMN identifier is used by the GGSN service to determine whether or not a mobile station is visiting, roaming, or home. Multiple GGSN services can be configured with the same PLMN identifier. Up to five PLMN IDs can be configured for each GGSN Service.


Example:
The following command configures the PLMN identifier with an MCC of 462 and MNC of 2:
plmn id mcc 462 mnc 02
plmn unlisted-sgsn

Configures the GGSN’s policy for handling communications from SGSNs with which it is not configured to communicate.

Platform:

ASR 5000

Product:

GGSN


Privilege:

Security Administrator, Administrator


Syntax 
default
plmn unlisted-sgsn

plmn
unlisted-sgsn [[ foregn [ disable-gtpc-echo | reject-foreign-subscriber ] | home [ disable-gtpc-echo ]]  | reject ] ]
default

Resets configured parameters to their default settings.

foreign

Default: Disabled

Specifies that the GGSN service accepts messages from SGSNs that are not configured within the service using the sgsn address command.

This keyword also dictates that unlisted SGSNs are treated as if they belong to a foreign PLMN. Therefore, PDP contexts originating from them are treated as visiting or roaming.

mcc mcc_value

Specifies the mobile country code (MCC) portion of the PLMN’s identifier.

mcc_value is the PLMN MCC identifier and can be configured to an integer from 100 through 999.

mnc mnc_value

Specifies the mobile network code (MNC) portion of the PLMN’s identifier.

mnc_value is the PLMN MNC identifier and can be configured to a 2- or 3-digit integer from 00 through 999.

disable-gtpc-echo

Default: Send GTPC Echo messages to unlisted SGSNs.

When this keyword is specified, GTPC echo messages are not sent to unlisted SGSNs.

reject-foreign-subscriber

Default: Disabled

Specifies that incoming calls from foreign subscribers are rejected.

home

Default: Disabled

Specifies that the GGSN service accepts messages from SGSNs that are not configured within the service using the sgsn address command.

This keyword also dictates that unlisted SGSNs are treated as if they belong to the GGSN service’s home PLMN.

rat-type { GAN | GERAN | HSPA | UTRAN | WLAN }

This keyword configures the type of radio access technology.

GAN: Specifies the Generic Access Network type of Radio Access Technology (RAT).

GERAN: Specifies the GSM EDGE Radio Access Network type of RAT.

HSPA: Specifies the High Speed Packet Access type of RAT.

UTRAN: Specifies the UMTS Terrestrial Radio Access Network type of RAT.

WLAN: Specifies the Wireless Local Access Network type of RAT.

reject

Default: Enabled

Specifies that the GGSN service rejects messages from SGSNs that are not configured within the service using the sgsn address command.

When the GGSN service rejects the message(s), it returns a cause code of No Resources 199 (C7H, No resources available).


Usage:

This command works in conjunction with the sgsn command that configures the GGSN service to communicate with specific SGSNs. Any messages received from SGSNs not configured in that list are subject to the rules dictated by the unlisted-sgsn policy.


Example:
The following command configures the GGSN service to accept messages from unlisted SGSNs and treat the SGSN as if it is on the GGSN’s home network:
plmn unlisted-sgsn
accept home
policy

Specifies the reject code to be used in the “Create PDP Context” response message when a RADIUS server timeouts.

Platform:

ASR 5000

Product:

GGSN


Privilege:

Security Administrator, Administrator


Syntax 
policy { accounting-server-timeout
use-reject-code { system-failure | no-resources } | authentication-server-timeout
use-reject-code { system-failure | user-authentication-failure } }

default policy { authentication-server-timeout | accounting-server-timeout }
default

Restores the specified parameter to its default setting.

accounting-server-timeout use-reject-code { system-failure | no-resources }

Default: no-resources

Specifies the reject code used by the GGSN if communication with an accounting server times out. The possible reject codes are:
  • system-failure (204 (CCH))
  • no-resources (199 (C7H))
authentication-server-timeout use-reject-code {system-failure | user-authentication-failure }

Default: user-authentication-failure

Specifies the reject code used by the GGSN if communication with an authentication server times out. The possible reject codes are:
  • system-failure (204 (CCH))
  • user-authentication-failure (209 (D1H))

Usage:

This command is used to configure the cause code used by the GGSN if communication with either a RADIUS authentication or accounting server times out.

When this parameter is used in conjunction with Radius accounting servers, the response is only set if a flag is configured in the APN Delay GTP Response, only after getting a response to the Accounting Start.


Example:
The following command configures the GGSN response to a RADIUS authentication server timeout to be system-failure:
policy authentication-server-timeout
use-reject-code system-failure
retransmission-timeout

Configures the timeout period in between retransmissions of GTP control packets. This timeout configuration is not applicable on Echo Request retransmission.

Platform:

ASR 5000

Product:

GGSN


Privilege:

Security Administrator, Administrator


Syntax 
retransmission-timeout retransmit_time

default retransmission-timeout
default

Configures the default time interval that must pass without an SGSN response before the GGSN service retransmits GTP control packets.

retransmit_time

Default: 5

Specifies the amount of time that must pass without an SGSN response before the GGSN service retransmits GTP control packets.

retransmit_time is measured in seconds and can be configured to an integer from 1 through 20.


Usage:

This command is used in conjunction with the max-retransmissions command to control the retransmission of GTP control packets when no response is received from an SGSN.

If no response is received from the SGSN prior to the expiration of the timeout value, the GTP control packets are re-sent by the GGSN. This process occurs as many times as allowed by the configuration of the max-retransmissions command.

If the max-retransmissions value is exceeded within the retransmission-timeout period, the GGSN records a “Path Failure” for that SGSN and releases all PDP contexts associated with it.

IMPORTANT:

This retransmission timeout configuration in not applicable for Echo Requests message retransmission. Echo are sent/retransmitted every echo interval, which can be configured separately.


Example:
The following command configures a timeout value of 20 seconds:
retransmission-timeout 20
setup-timeout

Configures the maximum amount of time the GGSN service allows for the setting up of PDP contexts.

Platform:

ASR 5000

Product:

GGSN


Privilege:

Security Administrator, Administrator


Syntax 
setup-timeout setup_time

default setup-timeout
default

Configures the default maximum amount of time the GGSN service allows for the setting up of PDP contexts.

setup-time

Default: 60

Specifies the maximum amount of time the GGSN service allows for the setting up of PDP contexts.

setup_time is measured in seconds and can be configured to an integer from 1 through 6000.


Usage:

Use this command to limit the amount of time allowed for setting up PDP contexts. If the PDP context is not setup within the configured time frame, the GGSN service rejects the PDP context with a cause code of 199 (C7H, No resources available).


Example:
The following command allows a maximum of 120 seconds for the setting up of PDP contexts:
setup-timeout 120
sgsn address

Configures the SGSNs that this GGSN service is allowed to communicate with.

Platform:

ASR 5000

Product:

GGSN


Privilege:

Security Administrator, Administrator


Syntax 
sgsn address { { ip_address [ subnetmask netmask ] } | ip_address/netmask } [ plmn-foreign [ reject-foreign-subscriber ] | mcc mcc_code mnc mnc_code [ reject-foreign-subscriber ] ] [ rat-type { GAN | GERAN | HSPA | UTRAN | WLAN } ] [ description description ] [ disable-gtpc-echo ]

no sgsn { address ip_address [ subnetmask netmask ] }
no

Removes a specific SGSN from the list or all configured SGSNs.

address

Configures the IP address of the SGSN.

ip_address must be expressed in IPv4 dotted-decimal notation.

subnetmask

Configures the subnet mask of the SGSN.

netmask must be expressed in IPv4 dotted-decimal notation.

disable-gtpc-echo

Default: Send GTPC Echo messages to unlisted SGSNs.

When this keyword is specified, GTPC echo messages are not sent to unlisted SGSNs.

plmn-foreign

Indicates whether or not the SGSN belongs to a foreign public land mobile network (PLMN).

reject-foreign-subscriber

Default: Disabled

Specifies that incoming calls from foreign subscribers are rejected.

mcc mcc_code

Specifies the mobile country code (MCC) portion of the PLMN’s identifier.

mcc_code is the PLMN MCC identifier and configured as an integer from 100 through 999.

mnc mnc_code

Specifies the mobile network code (MNC) portion of the PLMN’s identifier.

mnc_code is the PLMN MNC identifier and configured as a 2- or 3-digit integer from 00 through 999.

rat-type {GAN | GERAN | HSPA | UTRAN | WLAN }

This keyword configures the type of radio access technology.

GAN: Specifies the Generic Access Network type of Radio Access Technology (RAT).

GERAN: Specifies the GSM EDGE Radio Access Network type of RAT.

HSPA: Specifies the High Speed Packet Access type of RAT.

UTRAN: Specifies the UMTS Terrestrial Radio Access Network type of RAT.

WLAN: Specifies the Wireless Local Access Network type of RAT.

description description

Add description field to the SGSN entry in GGSN service.

description is an alphanumeric string of 1 through 63 characters.


Usage:

Use this command to configure a list of SGSNs that the GGSN service is to communicate with. This command can be entered multiple times to configure multiple SGSNs.

IMPORTANT:

The GGSN only communicates with the SGSNs configured using this command unless a plmn-policy is enabled to allow communication with unconfigured SGSNs. PLMN policies are configured using the plmn unlisted-sgsn command.


Example:
The following command configures the GGSN to communicate with an SGSN on a foreign PLMN with an IP address of 192.168.1.100 and subnet mask of 255.255.255.0:
sgsn address 192.168.1.100
subnetmask 255.255.255.0 plmn-foreign
sgsn define-multiple-address-group

This command defines an SGSN Multiple Address Group and enters SGSN Multiple Address Group Configuration mode. Whenever there is a change in the control address in a GTPC UPC message, it is treated as an inter-SGSN handoff because an SGSN is usually identified uniquely by a single IP-address. This command supports a multiple address group feature which allows you to specify a set of addresses that specify a single SGSN. When a UPC handoff is received from any address in the group, it is treated as an intra-SGSN handoff.

Platform:

ASR 5000

Product:

GGSN


Privilege:

Security Administrator, Administrator


Syntax 
sgsn define-multiple-address-group grp_name [ -noconfirm ]

no sgsn define-multiple-address-group grp_name
no

Removes a specific SGSN Multiple Address Group from the list GGSN service configuration.

grp_name

Specifies the name of an SGSN multiple address group to create or configure.

grp_nameis an alphanumeric string from 1 through 63 characters.

-noconfirm

Specifies that the command must execute without any additional prompt and confirmation from the user.


Usage:

Use this command to create or configure an SGSN Multiple Address Group that the GGSN service is to communicate with. This command can be entered multiple times to configure multiple SGSN Multiple Address Groups.


Example:
The following command creates an SGSN Multiple Address Group named sgsngrp1 and enters SGSN Multiple Address Group Configuration mode:
sgsn define-multiple-address-group sgsngrp1
sgsn multiple-address-group

Configures the SGSN multiple address groups that this GGSN service is allowed to communicate with.

Platform:

ASR 5000

Product:

GGSN


Privilege:

Security Administrator, Administrator


Syntax 
sgsn multiple-address-group grp_name [ disable-gtpc-echo ] [ mcc mcc_code mnc mnc_code [ reject-foreign-subscriber ] ] [ plmn-foreign [ reject-foreign-subscriber ] [ rat-type { GAN | GERAN | HSPA | UTRAN | WLAN } ] [ description description ]

no sgsn multiple-address-group grp_name
no

Removes a specific SGSN multiple address group from the list of configured SGSN multiple address groups.

grp_name

Specifies the name of a configured SGSN multiple address group to use.

disable-gtpc-echo

Default: Send GTPC Echo messages to unlisted SGSNs.

When this keyword is specified, GTPC echo messages are not sent to unlisted SGSNs.

plmn-foreign

Indicates whether or not the SGSN multiple address group belongs to a foreign public land mobile network (PLMN).

reject-foreign-subscriber

Default: Disabled

Specifies that incoming calls from foreign subscribers are rejected.

mcc mcc_code

Specifies the mobile country code (MCC) portion of the PLMN’s identifier.

mcc_code is the PLMN MCC identifier and can be configured to an integer from 100 through 999.

mnc mnc_code

Specifies the mobile network code (MNC) portion of the PLMN’s identifier.

mnc_code is the PLMN MNC identifier configured as a 2- or 3-digit integer from 00 through 999.

rat-type { GAN | GERAN | HSPA | UTRAN | WLAN }

This keyword configures the type of radio access technology.

GAN: Specifies the Generic Access Network type of Radio Access Technology (RAT).

GERAN: Specifies the GSM EDGE Radio Access Network type of RAT.

HSPA: Specifies the High Speed Packet Access type of RAT.

UTRAN: Specifies the UMTS Terrestrial Radio Access Network type of RAT.

WLAN: Specifies the Wireless Local Access Network type of RAT.

description description

Add a description field to the SGSN multiple address group entry in the GGSN service configuration.

description must be an alphameric string of 1 through 63 characters.


Usage:

Use this command to configure a list of SGSN multiple address groups with which the GGSN service is to communicate. This command can be entered multiple times to configure multiple SGSN multiple address groups.

IMPORTANT:

The GGSN only communicates with the SGSN multiple address groups configured using this command unless a plmn-policy is enabled to allow communication with unconfigured SGSNs. PLMN policies are configured using the plmn unlisted-sgsn command.


Example:
The following command configures the GGSN to communicate with an SGSN with multiple address that is defined by an SGSN multiple address group named sgsngrp1 that is on a foreign PLMN:
sgsn multiple-address-group
sgsngrp1 plmn-foreign
sgsn mcc-mnc

This command configures sgsn mcc-mnc for this GGSN service.

Platform:

ASR 5000

Product:

GGSN


Privilege:

Security Administrator, Administrator


Syntax 
sgsn mcc-mnc { prefer-rai | prefer-uli }

default sgsn mcc-mnc
default

Configures the default option for sgsn mcc-mnc. Default is ‘prefer-uli’.

prefer-rai

Configures sgsn mcc-mnc using rai.

prefer-uli

Configures sgsn mcc-mnc using uli.


Usage:

Use this command to configure the sgsn mcc-mnc.


Example:
The following command configures the sgsn mcc-mnc to ‘prefer-rai’:
sgsn mcc-mnc prefer-rai
trace-collection-entity

This command configures the trace collection entity IP address. Trace collection entity is the destination node to which trace files are transferred and stored.

Platform:

ASR 5000

Product:

GGSN


Privilege:

Security Administrator, Administrator


Syntax 
trace-collection-entity IPv4_addr

no trace-collection-entity
no

Removes the configured IPv4 address for trace collection in this GGSN service.

IPv4_addr

Specifies the IP address in IPv4 dotted-decimal notation.


Usage:

Use this command to configure the trace collection entity IP address. This configuration is required because during signaling session trace activation, CPC REQ and UPC REQ do not provide the IP address for the trace collection entity.


Example:
The following command configures the trace collection entity IP address with this GGSN service:
trace-collection-entity 192.36.56.56