Configures the number of inter-process communication (IPC) messages that can be aggregated in the various managers and defines the frequency of flushing the messages.

Product

SGSN

HNB-GW

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SGSN Global Configuration

configure > sgsn-global

Entering the above command sequence results in the following prompt:

[local]host_name(config-sgsn-global)#

Syntax

Syntax Description

aggregate-ipc-msg { gbmgr | linkmgr | sessmgr } { auto-num-msgs |  flush-frequencyfrequency | num-msgs number_msgs } 
default aggregate-ipc-msg { gbmgr | linkmgr | sessmgr }

default

Resets the managers to default values for flushing.

gbmgr

Selects the Gb manager to configure the number of IPC messages to be aggregated and frequency of flushing messages to the Session Manager that have been aggregated at the Gb Manager.

linkmgr

Selects the linkmgr to configure the number of IPC messages to be aggregated and frequency of flushing.

sessmgr

Selects the sessmgr to configure the number of IPC messages to be aggregated and frequency of flushing.

auto-num-msgs

Enables the automated aggregation of messages sent from LinkMgr or GbMgr to the SessMgr.

Default is Disabled.

flush-frequency frequency

Configure the frequency, in 100-millisecond intervals, that the aggregated IPC messages will be flushed. Flushing limits the number of messenger calls between managers to transfer the received packets.

frequency : Enter an integer from 1 to 3. Default is 1.

num-msgs number_msgs

Configure the number of IPC messages to aggregate before flushing.

number_msgs : Enter the integer 1 (to disable aggregation) or an integer from 2 to 164 to define the number of messages. Default is 10.

Usage Guidelines

Use this command to enable/disable aggregation of IPC messages in the linkmgr and/or the sessmgr. This command includes options to configure the frequency of aggregated message flushing and the number of packets to be buffered before the flush. This command provides a solution for reducing latency while sending the IPC messages towards the core network (CN).

The flushing limit will be based on either desired flush-frequency or maximum number of messages to be aggregated. Repeat the command to engage multiple limits.

By default, the link manager buffers packets and then send them over the SCCP link if there are events to be sent via SCCP Connection Request (SCCP CR) towards the core node. The HNB-GW/SGSN aggregate packets for 100 msec and send them with whatever aggregation has been done during those 100 msecs.

To view aggregate IPC message statistics, use command show config | grep aggregate-ipc-msg.

Enable/disable sending of SNAPTR DNS query to resolve an APN for a subscriber with an EPS (evolved packet system)-capable handset.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SGSN Global Configuration

configure > sgsn-global

Entering the above command sequence results in the following prompt:

[local]host_name(config-sgsn-global)#

Syntax

Syntax Description

[ no ] apn-resolve-dns-query snaptr
default apn-resolve-dns-query

default

Resets the default, the ability to send SNAPTR DNS query is disabled.

no

Disables the ability to send SNAPTR DNS query.

Usage Guidelines

By default, sending the SNAPTR DNS query is disabled. Use this command to send SNAPTR DNS query when resolving an APN for an EPS-capable subscriber.

At PDP context activation, the SGSN will use the UE capabilitly as input to select either a GGSN or a P-GW for the EPS-capable subscriber. The SNAPTR DNS query will be used for P-GW resolution. Enabling this feature will give priority to P-GW selection for E-UTRAN-capable UEs.

Configure this command to exclude or include RAT/Frequency Selection Priority (RFSP ID) in BSSGP DL-Unitdata messages to the BSC.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SGSN Global Configuration

configure > sgsn-global

Entering the above command sequence results in the following prompt:

[local]host_name(config-sgsn-global)#

Syntax

Syntax Description

bssgp-message dl-unitdata rfsp-id exclude 
default bssgp-message dl-unitdata rfsp-id 

default

By default, the RFSP-ID IE is included in BSSGP DL-Unitdata message.

dl-unitdata rfsp-id exclude

Use this keyword to exclude RFSP-ID IE in BSSGP DL-Unitdata message.

Usage Guidelines

The SGSN can control sending of RAT/Frequency Selection Priority (RFSP ID) from subscription or a local overridden value towards BSC.

This command determines the SGSN response to MS-Flow-Control messages received from an unknown MS.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SGSN Global Configuration

configure > sgsn-global

Entering the above command sequence results in the following prompt:

[local]host_name(config-sgsn-global)#

Syntax

Syntax Description

bssgp-message ms-flow-control-from-unknown-ms { discard-message | send-ack | send-status }
default bssgp-message ms-flow-control-from-unknown-ms

default

Including default with the command configures the SGSN to use default behavior so that the SGSN sends BSSGP-Status messages whenever the SGSN receives an MS-Flow-Control message from an unknown MS.

discard-message

This keyword instructs the SGSN to discard the received BSSGP message. With this option, the SGSN does not send any response to the MS after discarding the received BSSGP message.

send-ack

This keyword instructs the SGSN to send an acknowledgement message (MS-Flow-Control-ACK) after receiving an MS-Flow-Control message.

send-status

Default

This keyword instructs the SGSN to send a BSSGP-Status message to the MS whenever the SGSN receives an MS-Flow-Control message from an unknown MS.

Usage Guidelines

This command allows the operator to specify the action the SGSN needs to take whenever the SGSN receives an MS-Flow-Control message from an unknown mobile station. This configuration determines the response for the SGSN globally.

To see the statistics for the number of MS-Flow-Control messages that have been discarded, use the show bssgp statistics command from the Exec mode.

This command determines the SGSN response, per BVCI, to receipt of a peer-to-peer BVC Reset.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SGSN Global Configuration

configure > sgsn-global

Entering the above command sequence results in the following prompt:

[local]host_name(config-sgsn-global)#

Syntax

Syntax Description

bssgp-message ptp-bvc-reset { frc-subscriber-standby | retain-current-state }
default bssgp-message ptp-bvc-reset

default

Including default with the command configures the SGSN to use default behavior so that the SGSN continues with the current state once a peer-to-peer BVC Reset is received.

frc-subscriber-standby

This keyword instructs the SGSN to change the state of the subscribers to standby when the peer-to-peer BVC Reset is received.

retain-current-state

Default

This keyword instructs the SGSN to continue the current state of the subscribers when the BVC Reset message is received.

Usage Guidelines

This command allows the operator to specify the action the SGSN needs to take whenever the SGSN receives a peer-to-peer BVC Reset message for a specific BVCI.

To confirm the configuration for the response to the BVC Reset, use the show sgsn-mode command from the Exec mode.

Configures the T2 and TH timers for the BVCs (BSSGP virtual connections) of the NSE (network service entities).

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SGSN Global Configuration

configure > sgsn-global

Entering the above command sequence results in the following prompt:

[local]host_name(config-sgsn-global)#

Syntax

Syntax Description

bssgp-timer { t2 T2_time | th TH_time }
default bssgp-timer { t2 | th }

default

Resets the specified timers to default settings.

t2 T2_time

Configures the BVC reset guard timer (at the BSSGP layer) in units of 1 second.

T2_time : Enter an integer from 1 to 120. Default is 30 seconds.

th TH_time

Configures, at the BSSGP layer, the MS flow control parameter validity timeouts in units of 1 second.

TH_time : Enter an integer from 6 to 5999. Default is 500 seconds.

Usage Guidelines

Use this command to configure timer timeout values for MS flow control and BVC reset timers that control BVCs for the NSEs.

This command enables (disabled by default) or disables the SGSN to unblock blocked BVCs based on the receipt of uplink packets from the BSC.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SGSN Global Configuration

configure > sgsn-global

Entering the above command sequence results in the following prompt:

[local]host_name(config-sgsn-global)#

Syntax

Syntax Description

bvc-unblock { data-or-flow-control | flow-control | ul-data }
[ default | no ] bvc-unblock

default

Include default with the command to disable the function.

no

Include no with the command to disable this function.

data-or-flow-control

Enables the BVC-Unblock function when the SGSN receives either a FLOW-CONTROL-BVC packet or a UL-UNITDATA packet.

flow-control

Enables the BVC-Unblock function when the SGSN receives a FLOW-CONTROL-BVC packet.

ul-data

Enables the BVC-Unblock function when the SGSN receives a UL-UNITDATA packet.

Usage Guidelines

Configurations defined with this command are common to all NSE defined for the SGSN.

This command is useful if there is a BVC status mismatch across different SGSN managers (such as the sessmgr and the linkmgr) when the BSC sends BVC-Block (SGSN should move to BLOCKED) followed by a BVC-Reset (SGSN should move to UNBLOCKED). Such mismatches can easily occur, particularly on Gb-IP network connection, when one link receives the BVC-Block and a different link receives the BVC-Reset with little delay between the two.

If BVC-Unblock function is enabled, the SGSN ensures that BVCs which are in the BLOCKED state move to the UNBLOCKED state upon receipt of the configured packet type(s).

Defines the SGSN's canonical node name.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SGSN Global Configuration

configure > sgsn-global

Entering the above command sequence results in the following prompt:

[local]host_name(config-sgsn-global)#

Syntax

Syntax Description

[ no ] canonical-node-name  canonical_node_name 

no

Erases the specified canonical node name definition from the SGSN Global configuration.

Usage Guidelines

canonical_node_name is a fully or properly qualified domain name; for example sgsn.div.bng.kar.3gppnetwork.org.

In order for the Gn/Gp-SGSN to support the topological gateway selection feature, the SGSN's canonical node name must be defined in the SGSN's configuration. (This is not needed for the S4-SGSN). For additional information about this feature, refer to the Topology-based Gateway Selection section in the SGSN Administration Guide.

This command enables paging across common Routing Area (RA) for 2G and 3G.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SGSN Global Configuration

configure > sgsn-global

Entering the above command sequence results in the following prompt:

[local]host_name(config-sgsn-global)#

Syntax

Syntax Description

[ default | no ] common-ra-paging 

default

Returns the SGSN to the default state: paging across commong Routing Area (RA) is disabled for 2G and 3G.

no

Disables paging across common Routing Area (RA) for 2G and 3G after it has been enabled using the common-ra-paging command

Usage Guidelines

When this CLI is enabled, the SGSN supports paging initiation in both the RATs (2G and 3G) if paging has to be done in RA which is common across the RATs. SGSN also accepts power-off detach from the MS, which is different from the RAT when the MS is attached.

Sets up the environment on the SGSN to support Machine Type Communications (MTC) congestion control and opens a new SGSN Global Congestion Control command configuration mode.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SGSN Global Configuration

configure > sgsn-global

Entering the above command sequence results in the following prompt:

[local]host_name(config-sgsn-global)#

Syntax

Syntax Description

congestion-control 

Usage Guidelines

Provides access to the congestion-action-profile configuration command.

Executes all show commands while in Configuration mode.

Product

All

Privilege

Security Administrator, Administrator

Syntax

Syntax Description

do show

Usage Guidelines

Use this command to run all Exec mode show commands while in Configuration mode. It is not necessary to exit the Config mode to run a show command.

The pipe character | is only available if the command is valid in the Exec mode.

Caution

There are some Exec mode show commands which are too resource intensive to run from Config mode. These include: do show support collection, do show support details, do show support record and do show support summary. If there is a restriction on a specific show command, the following error message is displayed: Failure: Cannot execute 'do show support' command from Config mode.

Creates and/or deletes DSCP templates that can be configured for use for all GPRS services on the SGSN and provides access to the DSCP Template configuration mode. This command is also supported on HNB-GW service to create a DSCP template.

Product

SGSN

HNB-GW

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SGSN Global Configuration

configure > sgsn-global

Entering the above command sequence results in the following prompt:

[local]host_name(config-sgsn-global)#

Syntax

Syntax Description

dscp-template template_name [ -noconfirm ]
no dscp-template template_name

no

Deletes the template instance from the SGSN Global configuration.

template_name

Enter 1 to 64 alphanumeric characters, including dots (.), dashes (-), and forward slashes (/). to identify a unique instance of a DSCP template.

There is no known limit to the number of templates that can be created.

Usage Guidelines

This command enables the operator to create or delete an instance of a DSCP template and access the DSCP Template configuration mode. The DSCP templates are used to define the DSCP configuration for control packets and data packets for the GPRS services.

This command is also supported on HNB-GW service to create a DSCP template.

This command makes it possible for the operator to enable (default) / disable SGSN support for MS requests for dual PDP type (IPv4v6) addressing.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SGSN Global Configuration

configure > sgsn-global

Entering the above command sequence results in the following prompt:

[local]host_name(config-sgsn-global)#

Syntax

Syntax Description

[ default | no ] dual-address-pdp

default

Enables dual PDP type address support.

no

Disables the default behavior so that the SGSN does not honor requests for dual PDP type addresses.

Usage Guidelines

With release 12.2 and in accordance with 3GPP Release 9.0 specifications, by default the SGSN honors the MS/UE request for dual PDP type addressing (IPv4v6) for PDP context association with one IPv4 address and one IPv6 address/prefix. This support can be disabled by configuration.

This command enables extended coverage class support on the SGSN.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SGSN Global Configuration

configure > sgsn-global

Entering the above command sequence results in the following prompt:

[local]host_name(config-sgsn-global)#

Syntax

[ no ] ec-gsm

no

Disables EC-GSM support on the SGSN.

Usage Guidelines

Use this command to enable EC-GSM for all GPRS services on the SGSN.

Creates an EIR profile and provides access to the EIR profile configuration mode commands that define the parameters of the profile.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SGSN Global Configuration

configure > sgsn-global

Entering the above command sequence results in the following prompt:

[local]host_name(config-sgsn-global)#

Syntax

Syntax Description

eir-profile profile_name
no eir-profile profile_name

no

Deletes an EIR profile from the SGSN Global configuration.

profile_name

Enter a unique name for the profile, upto 64 alphanumeric characters in length.

Usage Guidelines

This command creates up to 16 instances of EIR profiles and provides access to the EIR Profile configuration mode for the commands to configure the EIR profile parameters.

Exits the current mode and returns to the Exec Mode.

Product

SGSN

Privilege

Security Administrator, Administrator

Syntax

Syntax Description

end

Usage Guidelines

Change the mode back to the Exec Mode.

Exits the current mode and returns to the previous configuration mode.

Product

SGSN

Privilege

Security Administrator, Administrator

Syntax

Syntax Description

end

Usage Guidelines

Change the mode to the Global Configuration Mode.

This command configures the SGSN to discard (drop) the Attach-Request message received with a random TLLI already in use.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SGSN Global Configuration

configure > sgsn-global

Entering the above command sequence results in the following prompt:

[local]host_name(config-sgsn-global)#

Syntax

Syntax Description

[ default ] gmm-message attach-with-tlli-in-use discard-message

default

Resets the default function allowing multiple MS, using the same random TLLI, to attempt to Attach simultaneously and disables discarding the Attach-Request message for random TLLI already in use.

Usage Guidelines

Working with the two related commands (noted below), this command is part of a procedure for handling multiple MS Attaches all with the Same Random TLLI. Use this command to configure the SGSN to allow only one subscriber at a time to attach using a fixed random TLLI.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SGSN Global Configuration

configure > sgsn-global

Entering the above command sequence results in the following prompt:

[local]host_name(config-sgsn-global)#

Syntax

Syntax Description

 gmm-sm-statistics attach-rejects cause network-failure only-internal 
 no gmm-sm-statistics attach-rejects 

Enables or disables General Packet Radio Service (GPRS) Multi-Operator Core Network (MOCN). With 2G MOCN, the radio network is shared among different operators, while each operator maintains its separate core network.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SGSN Global Configuration

configure > sgsn-global

Entering the above command sequence results in the following prompt:

[local]host_name(config-sgsn-global)#

Syntax

Syntax Description

[ no ] gprs-mocn

no

Disables GPRS MOCN when it has been previously enabled.

Usage Guidelines

Use this command to enable 2G MOCN, which is disabled by default.

For complete information about the 2G (GPRS) MOCN feature and its configuration, refer to the MOCN for 2G SGSN feature section in the Serving GPRS Support Node Administration Guide

This command creates an interface management configuration and provides access to the SGSN Interface Management configuration mode.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SGSN Global Configuration

configure > sgsn-global

Entering the above command sequence results in the following prompt:

[local]host_name(config-sgsn-global)#

Syntax

Syntax Description

interface-management

Usage Guidelines

Use this command to access the SGSN Interface Management configuration mode to map NSE-ID and NSE-name to the Gb interface and/or to lock and unlock interface by the NSE/BSC identifier.

This command enables suppressing of the specified RAT related ipms event reporting.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SGSN Global Configuration

configure > sgsn-global

Entering the above command sequence results in the following prompt:

[local]host_name(config-sgsn-global)#

Syntax

Syntax Description

ipms-suppress [ gprs | umts ] 
no ipms-suppress [ gprs | umts ] 

no

Disables suppressing of the specified RAT related ipms event reporting.

gprs

This keyword enables suppressing of 2G related ipms-event reporting to the Intracer.

umts

This keyword enables suppressing of 3G related ipms-event reporting to the Intracer.

Usage Guidelines

This command is configured to suppress or allow the IPMS-event reporting to Intracer for the specified RAT. This CLI command helps the operator to change the IPMS-event reporting and manage network load or congestion on the fly.

Note

By default the IPMS event reporting will be done by both the services, provided there is a valid IPMS-context and IPMS-server configured. IPMS suppression can be enabled on both the services (GPRS and UMTS service) at the same time. This provides independent control on the suppression of ipms-events from the GPRS and UMTS services.

Configure an IMSI range with an optional PLMN ID to associate with an Operator Policy.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SGSN Global Configuration

configure > sgsn-global

Entering the above command sequence results in the following prompt:

[local]host_name(config-sgsn-global)#

Syntax

Syntax Description

imsi-range mcc mcc_num mnc mnc_num { msin first start_number last stop_number [ operator-policy policy_name [ description description ] ] | plmnid plmn_id operator-policy policy_name [ description description ] } +
no imsi-range mcc mcc_num mnc mnc_num { msin first start_number last stop_number | plmnid plmn_id }

no

Using no in the command deletes the definition from the SGSN Global configuration.

mcc mcc_num

mcc defines the mobile country code (MCC) of an IMSI.

mcc_num: Enter a 3-digit number from 100 to 999 - 000 to 099 are reserved.

mnc mnc_num

mnc defines the mobile network code (MNC) of an IMSI.

mnc_num: Enter a 2 or 3-digit number from 00 to 999.

msin

MSIN (mobile subscriber international number) portion of the IMSI.

first start_num: Defines first MSIN prefix number in a range

last stop_num: Defines the last or final MSIN prefix number in a range.

operator-policy policy_name description description

Identify the operator policy that the IMSI range definition and/or the PLMN-ID is to be associated.

policy_name : Enter a string of 1 to 64 alphanumeric characters.

description: Enter a string of 1 to 100 alphanumeric characters to provide range clarification for converted Release 9.0 configurations.

Description is just an information field. From release 19.0 onwards the length of the string supported for this field has been reduced, the supported range is now "1" up to "50" alphanumeric characters. The reduction of the supported string size results in improvement in boot up time.

If a PLMN-ID is to be included in the definition, enter the plmnid before entering the operator policy name.

plmnid plmn_id

The 5-6 digit PLMN-ID consists of the MCC (mobile country code) plus the MNC (mobile network code) to identify the public land mobile network (PLMN) for a specific operator. This keyword associates a specific PLMN with this specific SGSN operator policy.

plmn_id : Enter 5 to 6 digits.

+

This symbol indicates that command can be repeated to create repeated definitions.

Usage Guidelines

An IMSI = maximum of 15 digits. An IMSI consists of the MCC (3 digits) + the MNC (2 or 3 digits) + the MSIN (the remaining 10 or 9 digits depending on the length of the MNC ).

MCC and MNC are the minimum amount of information required to identify a unique operator policy with IMSI filtering. The MCC and MNC combine uniquely to identify the country and the network operator, for example: Cingular Wireless in the United States = mcc 311mnc 180

To improve the granularity of call handling, an operator policy with additional IMSI filtering parameters can be defined, to include filtering based on the MSIN, by defining a MSIN range - first (or start-of-range) MSIN and last (or end-of-range) MSIN. The range numbers do not include the maximum allowed for the MSIN but should include a sufficient number to enable the operator policy to filter effectively.

For the most efficient IMSI filter, the operator policy should include all of the above parameters and the PLMN ID which defines the current location of the MS -- this parameter is particularly useful for highlighting which calls are roaming.

And if none of the operator policies contain useful filtering information, then the default operator policy will be applied as the information in this command is never defined for the default operator policy.

The following table will illustrate how these filtering parameters determine which operator policy will govern a call:

The filtering selects which operator policy will be used to determine how a call is handled - the operator policy that best matches the IMSI. So, a call with IMSI 123456789012345 PLMNID 23232 is best matched with OpPol-6.

In most cases, the operator policy with the most information defined will be used as a combination of PLMNID and IMSI provides the best match. But OpPol-6 won't always be the best match. Using the table above:

OpPol-1 is the best match for IMSI 123456789011111

OpPol-2 is the best match for IMSI 123456789099999

OpPol-5 is the best match for IMSI 123456789012345 if the PLMNID is 12344

Enable or 'start' Location Services (LCS) on the SGSN.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SGSN Global Configuration

configure > sgsn-global

Entering the above command sequence results in the following prompt:

[local]host_name(config-sgsn-global)#

Syntax

Syntax Description

location-services
no location-services

no

Disables or 'stops' LCS on the SGSN.

Usage Guidelines

By default, Location Services is not enabled on the SGSN. This command is mandatory to enable the SGSN to support LCS, which is a license-controlled feature. Multiple other commands are required to configure LCS functionality. For more information about the operation and configuration of LCS on the SGSN, refer to the Location Services section of the SGSN Administration Guide.

This command instructs the SGSN to ignore the CAMEL subscription when there is no CAMEL service associated or in existence.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SGSN Global Configuration

configure > sgsn-global

Entering the above command sequence results in the following prompt:

[local]host_name(config-sgsn-global)#

Syntax

Syntax Description

map-message insert-subscriber-data csi-handling when-camel-not-associated ignore-subscription
default map-message insert-subscriber-data csi-handling

default

Resets the SGSN's default behavior. By default, the SGSN validates the CAMEL subscription and rejects an Attach Request when there is no CAMEL service association.

Usage Guidelines

By default, the SGSN updates the the CAMEL subscription included in the INSERT-SUBSCRIBER-DATA (ISD) messages received from the HLR. While processing the ATTACH request from the CAMEL subscriber, the SGSN checks whether it has a CAMEL service associated with the corresponding service (either GPRS service or SGN service). It drops the ATTACH request if there is no CAMEL service associated with a corresponding service.

Also by default, the SGSN does not allow establishment of a Direct Tunnel (DT) for a CAMEL subscriber. It strictly validates the subscriber against the CAMEL subscription during the Direct Tunnel setup procedure.

This command enables the operator to control the behavior of the SGSN by configuring the SGSN to ignore the CAMEL subscription. This allows the SGSN to successfully complete an ATTACH procedure when there is an ATTACH Request from a CAMEL subscriber and there is no CAMEL service association in the SGSN. As well, during the Direct Tunnel establishment, validation of the CAMEL subscription is ignored to allow the DT to setup when there is no CAMEL service association in the SGSN.

Configure the maximum length of the pending attach queue.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SGSN Global Configuration

configure > sgsn-global

Entering the above command sequence results in the following prompt:

[local]host_name(config-sgsn-global)#

Syntax

Syntax Description

max-pending-attaches limit
default max-pending-attaches

default

Resets the SGSN's Attach queue to a maximum pending value of 10,000.

limit

Set the a maximum limit to the pending Attach/RAU messages queue in the LinkMgr. When the limit is reached a message is sent to the IMSIMgr.

limit : Enter an integer from 5000 - 50000. Default is 10000.

Usage Guidelines

With this command, configure the maximum limit to the pending ATTACH/RAU messages queue in the LinkMgr. When the limit is reached, the LinkMgr sends the Query/Forward messages to the IMSIMgr.

As the IMSIMgr gets busier and does not responded to Query/Forward requests, the response to the requests will get slower and slower and the queue size continues inflating if the incoming message rate is high. To avoid this situation, set the max-pending-attaches for the pending queue for Attach and RAU messages. All other messages from the HLR will be added to the queue as they cannot be dropped. High and low watermarks are set to the queue at 80% of max-pending-attaches " and 60% of max-pending-attaches respectively.

Once a high watermark is reached, the new Attach and RAU requests are dropped and relevant statistics are incremented. Once a low watermark is hit, the new Attach/RAU requests are accepted and added to the pending queue. The entries are added to the pending queue only when the window-size between IMSIMgr and LinkMgr becomes zero. This is a very rare occurrence and will not affect the current behavior in normal circumstances.

This command configures a list of random TLLI to be invalidated (removed) from the GMM after the invalidate old-TLLI timer expires.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SGSN Global Configuration

configure > sgsn-global

Entering the above command sequence results in the following prompt:

[local]host_name(config-sgsn-global)#

Syntax

Syntax Description

[ no ] old-tlli invalidate tlli < hexadecimal >

no

Removes a single random TLLI from the configured list.

< hexadecimal >

Identifies a single random TLLI to be removed from the GMM after the old-TLLI timer expires.

Usage Guidelines

Use this command to create a list of up to 50 random TLLI to be dropped from the GMM after the old-TLLI timer expires. This command also starts the invalidate old-TLLI timer.

This command configures the old-TLLI expiry timer to be started in GMM when anyone of the listed random TLLI are received.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SGSN Global Configuration

configure > sgsn-global

Entering the above command sequence results in the following prompt:

[local]host_name(config-sgsn-global)#

Syntax

Syntax Description

[ default ] old-tlli hold-time < seconds >

default

Resets the timer to 5 seconds

< seconds >

Sets the numbers of seconds before the timer expires; range 1 to 125.

Usage Guidelines

Use this command to configure the old-TLLI expiry timer to be started in GMM when anyone of the listed random TLLI are received. If the timer expires prior to receiving Attach-Complete then the SGSN invalidates (removes) the TLLI from the GMM.

Set the rate the SGSN deactivates PDP connections per second per SessMgr when GPT-C path failure is detected. Beginning with release 15.0, this command is also supported on the S4-SGSN.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SGSN Global Configuration

configure > sgsn-global

Entering the above command sequence results in the following prompt:

[local]host_name(config-sgsn-global)#

Syntax

Syntax Description

pdp-deactivation-rate { connected-ready rate | idle-standby rate } 
default pdp-deactivation-rate { connected-ready | idle-standby }

default

If this keyword is used with the command, then the default deactivation rates are used.

connected-ready rate

Subscribers that are in the PMM-Connected / GPRS-Ready state and actively using the SGSN service need to be deactivated at a faster rate to facilitate the deactivation/re-activation process.

rate -sets the number of subscribers to be deactivated per second per SessMgr and the valid range is 1 to 1000 and the default is 760 connected-ready subscribers deactivated per second.

idle-standby rate

Subscribers that are in the PMM-Idle / GPRS-Standby state are not actively using the SGSN service and can be deactivated at a slower rate. The deactivation process for idle-standby subscribers includes paging before the Deactivate Request is sent.

rate - sets the number of subscribers to be deactivated per second per SessMgr and the valid range is 1 to 1000 and the default is 240 idle-standby subscribers deactivated per second.

Usage Guidelines

Use this command to define a rate at which the SGSN processes PDP deactivations when a GTP-C path failure is detected (and confirmed according to the SGSN's default behavior). The operator can use this command to set a deactivation rate that ensures radio network congestion is avoided.

This command creates an instance of an ARP-RP Mapping Profile and/or access the ARP-RP Mapping Profile configuration mode commands.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SGSN Global Configuration

configure > sgsn-global

Entering the above command sequence results in the following prompt:

[local]host_name(config-sgsn-global)#

Syntax

Syntax Description

qos-arp-rp-map-profile  arp-rp_prof_name
no qos-arp-rp-map-profile  arp-rp_prof_name

no

Removes the specified ARP-RP Map Profile from the SGSN Global configuration.

arp-rp_prof_name

Enter a string of 1 to 64 alphanumeric characters to identify the mapping profile and moves into the ARP-RP mapping profile configuration mode. The ARP-RP Map Profiles need to be associated with the SGSN and/or GPRS Services.

Usage Guidelines

Using the ARP to RP mapping, the SGSN can choose a preferred radio priority according to the ARP values sent by the GGSN and HLR. As well, these mappings will be used by corresponding 2G and/or 3G services to choose the radio priority value while triggering messages (such as those listed below) towards the MS/UE:

The profiles will be populated via the arp command under the ARP-RP Map Profile configuration mode.

Configure the SGSN to ignore excess length of received RANAP messages.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SGSN Global Configuration

configure > sgsn-global

Entering the above command sequence results in the following prompt:

[local]host_name(config-sgsn-global)#

Syntax

Syntax Description

[ default | no ] ranap excess-len ignore

default

Resets the default behavior - a decode error is generated when received RANAP messages are more than an extra octet in length.

no

Disables the configuration to ignore overly long RANAP messages.

Usage Guidelines

By default, the SGSN issues a decode error when the RANAP messages include extra octets. Use this command to ignore RANAP messages that have excess octets.

Enable/disable RAN information management (RIM) support for the SGSN.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SGSN Global Configuration

configure > sgsn-global

Entering the above command sequence results in the following prompt:

[local]host_name(config-sgsn-global)#

Syntax

Syntax Description

[ default | no ] ran-information-management

default

Resets the default so RIM is disabled.

no

Disables the RIM support in the configuration file.

Usage Guidelines

By default, handling of RAN information management (RIM) messages is disabled. This command enables the SGSN to handle RIM messages. When this command is enabled and RIM message handling is enabled on the destination node, then RIM PDUs will be forwarded to the BSC/RNC. If RIM message handling is not enabled on both nodes, then the RIM PDUs will be dropped silently.

Confirm RIM configuration with the show sgsn-mode command in the Exec mode.

Selects the subscriber offloading algorithm to be applied to the SessMgr and the IMSIMgr.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SGSN Global Configuration

configure > sgsn-global

Entering the above command sequence results in the following prompt:

[local]host_name(config-sgsn-global)#

Syntax

Syntax Description

target-offloading algorithm [ optimized-for-speed | optimized-for-target-count ] 
default target-offloading algorithm 

default

Resets the configuration to default values.

optimized-for-speed

Enables faster algorithm to achieve the target count.

optimized-for-target-count

Enables a reliable algorithm to achieve the target count.

Default.

Usage Guidelines

With the SGSN's distributed architecture, there are many SessMgrs and offloading will happen in parallel at all SessMgrs. This command enables the operator to control the total number of subscribers being offloaded.

This command enable (default is disabled) or disables a periodic (hourly) audit of TLLI-CBs in the BSSGP� layer.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SGSN Global Configuration

configure > sgsn-global

Entering the above command sequence results in the following prompt:

[local]host_name(config-sgsn-global)#

Syntax

Syntax Description

tlli-cb-audit
[ default | no ] tlli-cb-audit

default

Include default with the command to disable the audit function.

no

Include no with the command to disable the audit function.

Usage Guidelines

This command is used to clean-up hanging or unassociated TLLI in the BSSGP layer. This configuration defined with this command will be common to all NSE configured for this SGSN.

Independent of this command configuration, the SGSN triggers and audit when the number of TLLI-CBs reaches 35,000.

This command enables the operator to authenticate mobile equipment (MEs) with R99+ USIMs and capable of UMTS AKA.

Product

SGSN

Privilege

Security Administrator, Administrator

Mode

Exec > Global Configuration > SGSN Global Configuration

configure > sgsn-global

Entering the above command sequence results in the following prompt:

[local]host_name(config-sgsn-global)#

Syntax

Syntax Description

umts-aka-r99
no umts-aka-r99

no

Including no with the command disables the authentication.

Usage Guidelines

This command enables operators to authenticate MEs that are attempting to connect to a 2.5G network with R99+ USIMs if the MEs are UMTS AKA capable. For R99 mobiles, the SGSN will continue to perform GSM AKA even if quintuplets are received fromthe HLR.