SGSN Service Configuration Mode Commands

The SGSN Service configuration mode is used within the global configuration mode to specify the 3G operations of the SGSN and the available SGSN services for a specific context.

SGSN Service works with MAP Service, SGTP Service, GTPP Group, and IuPS Service. All five of these services must be configured to enable a 3G SGSN to communicate with other elements within a UMTS network.

In this mode, the command prompt should appear like:
[<ctx_name>]hostname(config-sgsn-service)#

IMPORTANT:

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

accounting

This command defines the accounting context name and enables/disables specific types of CDR generation for the accounting in the SGSN service.

Platform:

ASR 5000

Product:

SGSN


Privilege:

Security Administrator, Administrator


Syntax 
accounting ( cdr-types { mcdr | scdr | sms { mo-cdr | mt-cdr } }+ | context  cntx_name  }default accounting
cdr-typesno accounting ( cdr-types | context }
default

Returns the system to default settings for the selected type of CDR.

no

Removes the pre-configured type of CDR generation for accounting from the SGSN service.

cdr-types { mcdr | scdr | sms { mo-cdr | mt-cdr } }

Default: enabled

Defines the types of CDRs to be generate:d within the specified SGSN service for accounting:
  • mcdr Enables generation of M-CDRs.
  • scdr : Enables generation of S-CDRs.
  • sms : Enables generation of SMS-type CDRs based on one of the following:
    • mo-cdr: : SMS CDRs orignates from the mobile.
    • mt-cdr: SMS CDRs terminates at the mobile.
+

Specifies that the specified keywords with in the group can be entered multiple times with a single command.

context cntx_name

Specifies an accounting context to be associated with the SGSN service.

cntx_name: Define a string of 1 to 79 alphanumeric characters.


Usage:

Use this command to define the type of CDRs to generate for SGSN service. By default all type of CDRs are generated. Note that change of this configuration will be applied to new call and/or to new PDP contexts only.

By default, the generation of all CDR types is enabled.


Example:
The following command configures the system to generate CDRs of M-CDR type for accounting in the current SGSN service:
accounting cdr-types mcdr
admin-disconnect-behavior

This command defines some of the actions the SGSN will take during an Admin-Disconnect procedure.

Platform:

ASR 5000

Product:

SGSN


Privilege:

Security Administrator, Administrator


Syntax 
 admin-disconnect-behavior { clear-subscription | detach-type { reattach-not-required | reattach-required } } 

[ default | no ] admin-disconnect-behavior { clear-subscription | detach-type }
clear-subscription

Including this keyword in the configuration instructs the SGSN to clear subscriber contexts and the subscription data database whenever the clear subscribers all command is issued (from the Exec mode) for attached subscribers. As well, the SGSN will issue an appropriate Map-Purge-MS-Req to the HLR if needed.

Default: disabled

detach-type
Including this keyword defines which type of detach instruction to include in the Detach-Request message during an Admin-Disconnect procedure. One of the following options must be included when this command is entered:
  • reattach-not-required
  • reattach-required

Default: reattach-required

default | no

Including either default or no keyword in the command, instructs the SGSN to use the default value for the specified parameter.


Usage:

Include the clear-subscription keyword with this command configuration to ensure that more than attached MM-context and active PDP-contexts are cleared when the clear subscribers all command is issued for attached subscribers.

To clear subscription data for detached subscribers, refer to the sgsn clear-detached-subscriptions command described in the Exec mode chapter.

Including the detach-type keyword with this command instructs the SGSN to include either a ‘reattach-required’ or a ‘reattach-no-required’ instruction in the Detach-Request message.


Example:
Configure the SGSN to clear data such as PTMSI allocated, auth-vectors received, and NGAF flag values stored in the subscriber database for attached subscribers:
admin-disconnect-behavior
clear-subscription
cc profile

Configures the charging characteristic (CC) profile with the triggers for generating various types of CDR as defined with the accounting command.

Platform:

ASR 5000

Product:

SGSN


Privilege:

Security Administrator, Administrator


Syntax 
cc profile profile_bits [ buckets number | interval time | tariff
time1 mins
hours [ time2 mins hours ] [ time3 mins hours ] [ time4 mins hours  ] | volume { downlink down_vol uplink  up_vol | total  total_vol } ] +[ no | default ] cc
profile profile_bits [ buckets | interval | tariff | volumne ]
no

Removes a previously configured CC profile.

default

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

profile_bits

Defines the value of the profile bits for the SGSN service.

index can be configured to any integer value from 0 to 15. Some of the values have been predefined according to 3GPP standard:
  • 1 for hot billing
  • 2 for flat billing
  • 4 for prepaid billing
  • 8 for normal billing
buckets number

Specifies the number of statistics container changes in the CDR due to QoS changes or tariff times that can occur before an accounting record (CDR) is closed

Default: 4

number : Must be integer from 1 to 4.

interval time

Specifies the normal time duration (in seconds) that must elapse before closing an accounting record (CDR) provided that any or all of the following conditions occur:

time : Enter any integer from 60 to 40000000.

tariff time1 mins hours [ time2 mins hours time3 mins hours time4 mins hours ]

Specifies the time-of-day (based on a 24-hour clock) to close the current statistics container in the CDR, but not necessarily the CDR itself. One tariff time must be defined and up to four tariff times can be specified.

IMPORTANT:

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

  • mins: The minutes of the hour. Enter an integer from 0 to 59.
  • hours: The hour of the day. Enter an integer from 0 to 23.
volume { downlink down_vol uplink up_vol | total total_vol }

Specifies the downlink, uplink, and total volumes octet counts that must be met for the closure of the CDR.

down_vol : Enter any integer from 100000 to 1345294336.

up_vol : Enter any integer from 100000 to 400000000.

total_vol : Enter any integer from 100000 to 400000000.


Usage:

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


Example:
The following command configures a profile index of 10 with 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
check-imei

This command configures the action the SGSN will take if the route towards the EIR is down.

Platform:

ASR 5000

Product:

SGSN


Privilege:

Security Administrator, Administrator


Syntax 
check-imei { gf-failure-action | gf-timeout-action } { continue | reject }default check-imei { gf-failure-action | gf-timeout-action }
default

Resets the default function to reject the Attach.

gf-failure-action

Coupled with either continue or reject, this keyword instructs the SGSN to take action if a valid EIR configuration exists under the MAP service and if the EIR is temporarily unreachable due to associated DPC/SSN inaccessible/out-of-service.

gf-timeout-action

Coupled with either continue or reject, this keyword instructs the SGSN to take action if a valid EIR configuration exists under the MAP service and the route to the EIR is available, but no response is received from the EIR.

continue

Instructs the SGSN to continue the Attach process.

reject

Instructs the SGSN to reject the Attach process.


Usage:

Typically, the Attach process will be continued when there is an IMEI check timeout based on the configuration under the SGSN service configuration and/or the GPRS service configuration. But this works only if the route towards the EIR is UP and the IMEI request timer expires. This command configures the SGSN to allow the Attach process to continue in the case the route towards the EIR is down, that is the DPC / SSN is out-of-service.


Example:
Use the following command to reset the default and reject Attach:
default check-imei
gf-failure-action
check-imei-timeout-action

In Releases 12.0 and higher, this command has been replaced with enhanced functionality in the check-imei command, also available in this configuration mode.

core-network

This command specifies the numeric ID for a core network to identify which CN is to be used by the SGSN service.

Platform:

ASR 5000

Product:

SGSN


Privilege:

Security Administrator, Administrator


Syntax 
core-network id cn_idno core-network id
no

Removes the currently configured core network ID from the current SGSN configuration.

id cn_id

This number identifies the core network to connect the SGSN service.

cn_id : Must be an integer from 0 through 65535.


Usage:

Use this command to set a global ID to identify this SGSN in the core network.


Example:
The following command sets the core network ID for the current SGSN service to 127:
core-network id 127
disable/enable super-charger

This command has been deprecated and replaced by the super-charger command. For the commands to configure the SuperCharger feature, refer to the Call-Control Profile Configuration Mode chapter.

dns israu-mcc-mnc-encoding

Configures either decimal or hexadecimal format for the MCC and MNC values in the DNS query which is sent during the ISRAU.

Platform:

ASR 5000

Product:

SGSN


Privilege:

Security Administrator, Administrator


Syntax 
dns israu-mcc-mnc-encoding { decimal | hexidecimal }default dns israu-mcc-mnc-encoding
default

Resets the SGSN to send the MCC and MNC values in decimal format for DNS queries.

decimal

Default.

Instructs the SGSN to send the MCC and MNC in decimal format in the DNS query.

hexadecimal

Instructs the SGSN to send the MCC and MNC in hexadecimal format in the DNS query.


Usage:

Use this command to determine the type of encoding for the MCC and MNC to be included in the DNS query sent during the inter-SGSN RAU (ISRAU). The choice must match the format of the DNS server. For example:

In decimal, the MNC/MCC in a DNS query would appear like:
rac0017.lac42e3.mnc310.mcc722.gprs
In hexadecimal, the MNC/MCC in a DNS query would appear like:
rac0017.lac42e3.mnc0136.mcc02d2.gprs

Example:
Use hexadecimal values for the MCC/MNC in the DNS query.
dns israu-mcc-mnc-encoding hexadecimal
end

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

Product:

SGSN


Privilege:

Security Administrator, Administrator


Syntax 
end

Usage:

Return to the Exec mode.

exit

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

Product:

SGSN


Privilege:

Security Administrator, Administrator


Syntax 
exit

Usage:

Return to the context configuration mode.

gmm

This command defines the GPRS mobility management parameters for the SGSN service.

Platform:

ASR 5000

Product:

SGSN


Privilege:

Security Administrator, Administrator


Syntax 
gmm { T3302-timeout
 t3302_dur | T3312-timeout
 t3312_dur | T3313-timeout
initial  t3313_init [  decrease
 t3313_decrement |  increase t3313_increment ] | T3322-timeout t3322_dur | T3350-timeout t3350_dur | T3360-timeout t3360_dur | T3370-timeout t3370_dur | implicit-detach-timeout impli_detach_dur | max-auth-retransmission auth_retrans |  max-identity-retransmission id_retrans | max-page-retransmission page_retrans | max-ptmsi-reloc-retransmission
 ptmsi_reloc_retrans |  mobile-reachable-timeout ms_reach_dur | perform-identity-on-auth-failure | purge-timeout purge_dur | trau-timeout trau_dur }default gmm { T3302-timeout | T3312-timeout | T3313-timeout | T3322-timeout | T3350-timeout | T3360-timeout | T3370-timeout | implicit-detach-timeout | max-auth-retransmission | max-identity-retransmission | max-page-retransmission | max-ptmsi-reloc-retransmission | mobile-reachable-timeout | perform-identity-on-auth-failure | purge-timeout | trau-timeout }no gmm { implicit-detach-timeout | max-auth-retransmission | max-identity-retransmission | perform-identity-on-auth-failure
 }
default

Sets the default value for the specified parameter.

T3302-timeout t3302_dur

Default: 10

Specifies the retransmission timer value to guard the GPRS attach or RAU procedure on MS side.

t3302_dur is the waiting duration in minutes before retransmitting the specific message and must be an integer from 1 through 186.

T3312-timeout t3312_dur

Default: 54

Specifies the retransmission timer value to guard the RAU procedure initiation on network side.

t3312_dur is the waiting duration in minutes before retransmitting the specific message and must be an integer from 1 through 186.

T3313-timeout initial t3313_init [ decrease t3313_decrement | increase t3313_increment ]

Default: 5

Specifies the retransmission timer value to guard the for paging request procedure initiation on network side.

initial t3313_init - Specifies the initial wating duration in seconds before retransmitting the specific message. t3313_init must be an integer from 1 through 60.

decrease t3313_decrement - Specifies the decrement of the initial timer value in seconds. t3313_decrement must be an integer from 1 through 5.

increase t3313_increment - Specifies the increment of the initial timer value in seconds. t3313_decrement must be an integer from 1 through 5.

T3322-timeout t3322_dur

Default: 6

Specifies the retransmission timer value to guard the GPRS detach request procedure on network side.

t3322_dur is the waiting duration in seconds before retransmitting the specific message and must be an integer from 1 through 20.

T3350-timeout t3350_dur

Default: 6

Specifies the retransmission timer value to guard the GPRS attach accept/RAU accept/realloc request procedure sent with P-TMSI and/or TMSI on network side.

t3350_dur is the waiting duration in seconds before retransmitting the specific message and must be an integer from 1 through 20.

T3360-timeout t3360_dur

Default: 6

Specifies the retransmission timer value to guard the authentication and cipher request procedure on network side.

t3360_dur is the waiting duration in seconds before retransmitting the specific message and must be an integer from 1 through 20.

T3370-timeout t3370_dur

Default: 6

Specifies the retransmission timer value to guard the identity request procedure on network side.

t3370_dur is the waiting duration in seconds before retransmitting the specific message and must be an integer from 1 through 20.

implicit-detach-timeout impli_detach_dur

Default: 3600

Specifies the retransmission timer value to guard the implicit detach procedure on network side.

impli_detach_dur is the waiting duration in seconds before retransmitting the specific message and must be an integer from 1 through 86400.

max-auth-retransmission auth_retrans

Default: 4

Specifies the maximum retransmission of authentication requests allowed.

auth_retrans is the number of retries before declaring the authentication failure and must be an integer from 1 through 10.

max-identity-retransmission id_retrans

Default: 4

Specifies the maximum retransmission of identity requests allowed.

id_retrans is the number of retries before declaring the identity failure and must be an integer from 1 through 10.

max-page-retransmission page_retrans

Default: 5

Specifies the maximum retransmission of page requests allowed.

id_retrans is the number of retries before declaring the paging request failure and must be an integer from 1 through 5.

max-ptmsi-reloc-retransmission ptmsi_reloc_retrans

Default: 5

Specifies the maximum retransmission for P-TMSI relocation procedure allowed.

id_retrans is the number of retries before declaring the P-TMSI relocation procedure failure and must be an integer from 1 through 10.

mobile-reachable-timeout ms_reach_dur

Default: 58

Specifies the retransmission timer value to guard the mobile reachability procedure on network side.

impli_detach_dur is the waiting duration in minutes before retransmitting the specific message and must be an integer from 4 through 1440.

perform-identity-on-auth-failure

Default: Enabled

Configures the SGSN service to perform an identity check to ascertain the IMSI after an authentication failure on a PTMSI-based message.

purge-timeout purge_dur

Default: 10080 (7 days)

Specifies the timer value to guard the detach of MM context procedure on network side.

impli_detach_dur is the waiting duration in minutes before retransmitting the specific message and must be an integer from 1 through 20160.

Define the purge timer to hold detached mm-contexts. Default is 10080 mins (7 days).

trau-timeout trau_dur

This timer is available in releases 9.0 and higher.

Default: 30

Specifies the number of seconds the “old” 3G SGSN waits to purge the MS’s data. This timer is started by the “old” SGSN after completion of the inter-SGSN RAU.

trau_dur : Must be an integer from 5 to 60.


Usage:

Repeat this command as needed to configure multiple parameters for GPRS mobility management in a UMTS network. This command provides the configuration of timers for mobility procedures and retries for different messages. GMM layer is defined in the 3GPP TS 24.008 (Release 7).


Example:
Following command configures the timer to wait for 5 mins before retransmitting the message for GPRS attach or RAU procedure on MS side with maximum number of retries as 6 for authentication:
gmm T3302-timeout 5 max-auth-retransmission 6
gs-service

This command associates a previously defined Gs service configuration, for the Gs interface to an MSC/VLR, with this SGSN service.

Platform:

ASR 5000

Product:

SGSN


Privilege:

Security Administrator, Administrator


Syntax 
gs-service gs_srvc_name context ctx_nameno gs-service gs_srvc_name
no

Removes/disassociates the named Gs service from this SGSN service.

gs_srvc_name

Specifies the name of a specific Gs service for which to display information.

svc_name is the name of a configured Gs service and can be from 1 to 63 alpha and/or numeric characters and is case sensitive.

context ctx_name

Specifies the specific context name where Gs service is configured. If this keywork is omitted, the named Gs service must be exist in the same context as the SGSN service.

ctx_name is name of the configured context of Gs service. This can be from 1 to 63 alpha and/or numeric characters and is case sensitive.


Usage:

Use this command to associate a specific Gs service interface with this SGSN service instance.

IMPORTANT:

A single Gs service can be used with multiple SGSN and/or GPRS service.


Example:
Following command associates a Gs service instance named stargs1, which is configured in context named star_ctx, with an SGSN service:
gs-service stargs1 context star_ctx
lac

This command defines the location area code (LAC) in hexadecimal format.

Note:

This command is new in releases 8.1 and higher.

Platform:

ASR 5000

Product:

SGSN


Privilege:

Security Administrator, Administrator


Syntax 
lac hexno lac
no

Erases the lac configuration statement.

hex

Enter a hexadecimal number between 0x0 and 0xFFFF

max-pdp-contexts

Configures the maximum number of PDP contexts for a MS (mobile station) that will be supported on this SGSN service.

Platform:

ASR 5000

Product:

SGSN


Privilege:

Security Administrator, Administrator


Syntax 
max-pdp-contexts per-ms numberdefault max-pdp-contexts
per-ms
default

Resets the maximum number of PDP contexts per mobile station to the default of 11 for the Gs service configuration

per-ms number

Default: 11

Defines the combined total number of primary and secondary PDP contexts for the SGSN service.

number can be an integer from 2 to 11.


Usage:

The following example defines 5 as the maximum number of primary and secondary PDP contexts that this SGSN will support for any connected MS.


Example:
max-pdp-contexts per-ms 5
mobile-application-part

This command identifies an already defined MAP service (Mobile Application Part service) to associate with the SGSN service. Although the MAP service does not need to be defined in the same context as the SGSN service, there is a one-to-one relationship between a MAP service and an SGSN service.

Platform:

ASR 5000

Product:

SGSN


Privilege:

Security Administrator, Administrator


Syntax 
mobile-application-part
service map_srvc [ context  ctx_name ]no mobile-application-part service
no

Remove the MAP service association from the SGSN service configuration.

service map_srvc

Specifies the name of the MAP service to be associated with this SGSN service.

map_srvc must be the name of a MAP service previously configured on the system.

context ctx_name

Specifies the name of the context where the MAP service is configured. If the MAP service is not configured in the current context, then the context where it is configured must be specified to enable the SGSN to reach the MAP service.

If this keyword is not specified, the current context is used.

ctxt_name: Must be the name of the context where the specified MAP service is configured.


Usage:

Use this command to identify the MAP service configuration to be used by the SGSN service configuration. Also use this command to specify the context in which the MAP service configuration was created.

If the MAP service is not identified or if the correct context is not identified, then the SGSN service will not START.


Example:
The following command specifies a MAP service named map1 that is configured in the same context as the current SGSN service:
mobile-application-part
service map1
network-sharing cs-ps-coordination

Enables/disables the SGSN service to perform a CS-PS coordination check.

IMPORTANT:

This command is no longer available in all 12.0 and 12.2 releases. If you do not see this command in your release, look for the network-sharing cs-ps-coordination command in the IuPS Service configuration mode to accomplish the same task. Configuring in the IuPS Service configuration mode allows for the possibility of multiple IuPS services with network-sharing and differing CS-PS coordination requirements.

Platform:

ASR 5000

Product:

SGSN


Privilege:

Security Administrator, Administrator


Syntax 
network-sharing cs-ps-coordinationdefault network-sharing
cs-ps-coordinationno network-sharing
cs-ps-coordination
default

Including this keyword resets the SGSN service to allow the check to be performed.

no

Disables this feature for the SGSN service.


Usage:

Use this command to facilitate the network sharing functionality. With this command, the SGSN can be instructed to perform a check to determine if CS-PS coordination is needed.

3GPP TS 25.231 section 4.2.5 describes the functionality of the SGSN to handle CS-PS (circuit-switching/packet-switching) coordination for attached networks not having a Gs-interface. In compliance with the standard, the SGSN rejects an Attach in a MOCN configuration with cause 'CS-PS coordination required', after learning the IMSI, to facilitate the RNC choosing the same operator for both CS and PS domains.


Example:
Use the following syntax to disable the CS-PS coordination check:
no network-sharing
cs-ps-coordination
nri length

This command defines the Network Resource Identifier (NRI) of the SGSN that is stored in the P-TMSI (bits 23 to 18).

Platform:

ASR 5000

Product:

SGSN


Privilege:

Security Administrator, Administrator


Syntax 
nri length  nri_length [ nri-value nri_value | null-nri-value null_nri_value non-broadcast mcc mcc mnc mnc lac lac_id rac rac_id nri-value value ] no nri
no

Releases prior to 14.0, this command removes the configured NRI value and location information in the P-TMSI that would be retrieved by this SGSN.

nri length nri_length

Specifies the number of bits to be used in the P-TMSI, bits 23 to 18. to define the network resource identifier (NRI). The NRI length configuration also sets the maximum size of the pool. If not configured, the NRI length will be of zero length.

nri_length : Must be an integer from 1 to 6 to identify the number of bits.

null-nri-value null_nri_value

This keyword is only available in releases 8.1 and higher.

Configures the null NRI value which must be unique across the pool areas. This keyword is used for the offloading procedure for SGSN pooling (enabled with the sgsn offloading command, see the Exec Mode chapter).

null_nri_value is an integer 0 (zero) to 63 which identifies the SGSN to be used for the offloading procedure for SGSN pooling. There is no default value for this parameter.

non-broadcast mcc mcc mnc mnc lac lac_id rac rac_id

This keyword set is only available in releases 8.1 and higher.

Defines the non-broadcast LAC/RAC to be used in combination with the null-NRI for the offloading procedure. Including the MCC and MNC to specify the PLMN because the Iu-Flex feature supports multiple IuPS Services.

mcc identifies the mobile country code, the first part of the PLMN ID. Must be an integer between 100 and 999.

mnc identifies the mobile network code portion of the PLMN ID. Must be a 2- or 3-digit integer between 01 and 999.

lac_id defines a location area code associated with an RNC. Must be an integer between 1 and 65535.

rac_id defines the remote area code to be associated with an RNC. Must be an integer between 1 and 255.

nri-value nri_value

Specifies the MS-assigned value of the NRI to retrieve from the P-TMSI. This value must not exceed the maximum possible value specified by the NRI length. The NRI value must be unique across the pool or across all overlapping pools.

nri_value must be an integer from 1 to 63 to identify a specific SGSN in a pool. Use of 0 (zero) value is not recommended.

Multiple NRI values can be identified by providing multiple nri-values separated by a blank space for example: nri length 6 nri-value 29 43 61


Usage:

Use this command to identify the SGSN identified with the NRI in the MS generated P-TMSI.

This command adds or removes the Iu Flex configuration for this SGSN service. When using Iu Flex, all keywords must be defined. The command can be repeated to specify different values for any of the keyword parameters. If more than one NRI is configured, the SGSN service will round-robin between the available NRIs when new subscribers (re)connect.

Use this command to retrieve the NRI (identity of an SGSN) stored in in bits 23 to 18 of the packet-temporary mobile subscriber identity (P-TMSI). If more than one NRI value is configured, the SGSN service will round-robin between the available NRIs when new subscribers (re)connect.

When using MOCN mode for network sharing without SGSN pooling, the NRI length and the NRI value should both be used.


Example:
The following command specifies the the NRI length as 5 bits, identifies SGSN 23 with MCC 123 and MNC 22 and LAC 222 and RAC 12 for offloading procedure with NRIs 6 and 41:
nri length 5 null-nri-value
34 non-broadcast mcc 123 mnc 22 lac 222 rac 12 nri-value 6 41
override-lac-li

Refer to the ASR 5000 Lawful Intercept Guide for a description of thsi command.

override-rac-li

Refer to the ASR 5000 Lawful Intercept Configuration Guide for a description of this command.

rac

Refer to the ASR 5000 Lawful Intercept Configuration Guide for a description of this command.

qos-modification

This command the provides flexibility to enable/ disable RAB set up followed by UPCQ towards GGSN / Modify towards UE based on whether or not RNC downgrades the QoS.

Platform:

ASR 5000

Product:

SGSN


Privilege:

Security Administrator, Administrator


Syntax 
qos-modification inform-rnc-before-ueno qos-modification
no

The SGSN informs UE before RNC,this is also the default behavior.

inform-rnc-before-ue

When this keyword is used the SGSN informs RNC of new QoS before informing UE.


Usage:

Use this command to override the current SGSN behavior during PDP modification procedure. On execution of this command the SGSN initiates a RAB assignment to inform RNC followed by UPCQ towards GGSN / Modify towards UE based on whether or not RNC downgrades the QoS.


Example:
qos-modification inform-rnc-before-ue
ran-protocol

This command specifies the IuPS service for the SGSN service to use for communication with the RAN.

Platform:

ASR 5000

Product:

SGSN


Privilege:

Security Administrator, Administrator


Syntax 
ran-protocol iups-service iups_srvc [ context ctx_name ]no ran-protocol iups-service
no

Removes the IuPS service information from the SGSN service configuration.

iups-service iups_srvc

Specifies the name of an IuPS service already configured on the system.

iups_srvc : Enter an alphanumeric string of 1 to 63 characters.

ctx_name

ctx_name : Enter the name of the IuPS context, an alphanumeric string of 1 to 63 characters.


Usage:

Use this command to configure the IuPS service context that the current SGSN service will use to communicate with the RAN. Up to 8 definitions can be defined for a single SGSN service to allow for multiple PLMNs support.


Example:
The following command configures the SGSN service to use an IuPS service named iups1 that has been configured. in the same context as the SGSN service:
ran-protocol iups-service iups1
reporting-action event-record

This command enables the SGSN to log GMM/SM events in EDR files for 3G services.

Platform:

ASR 5000

Product:

SGSN


Privilege:

Security Administrator, Administrator


Syntax 
reporting-action event-record[ default | no ] reporting-action
event-record
default

Disables the logging function.

no

Removes the logging function from the configuration file.


Usage:

This command is one of the steps needed to enable the SGSN to create a log for events such as Attach, RAU, and Activations. The log is an EDR (event data record) in CSV format. For details about how this feature works, refer to the GMM-SM Event Logging chapter in the SGSN Administration Guide.

Related Commands:
  • To enable GMM/SM event logging for 2G services, the reporting-action event-record command must be configured in the GPRS service configuration.
  • To enable a log to be generated in an EDR file, the edr-module active-charging-service command must be enabled in the Context configuration mode.
  • To configure parameters for the logging file characteristics and for file transfer, use the commands in the EDR Module Configuration Mode.

Example

Example
Enable GMM/SM event logging for 3G services:
reporting-action event-record
sgsn-number

This command defines the E.164 number that identifies this particular SGSN service context.

Platform:

ASR 5000

Product:

SGSN


Privilege:

Security Administrator, Administrator


Syntax 
sgsn-number  E.164_numberno sgsn-number
no

Removes the SGSN number configuration from the SGSN service configuration.

E.164_number

Enter a maximum of 15 digits to define the ‘phone’ number associated with this SGSN service in the specified context.


Usage:

The SGSN supports multiple SGSN numbers – different numbers in the 2G GPRS service configuration and the the 3G SGSN service configuration. If an HLR-initiated dialog is received, the SGSN will perform a lookup based on the IMSI and find the correct SGSN number with which the MS is associated. Subsequent messaging will use this address.

Example

Example
To delete the sgsn-number associated with this SGSN service context, enter:
no sgsn-number
sgtp-service

This command creates an instance of an SGTP service and associates the SGTP service instance with this SGSN service.

Platform:

ASR 5000

Product:

SGSN

PDG/TTG


Privilege:

Security Administrator, Administrator


Syntax 
sgtp-service sgtp_srvc_nameno sgtp-service
sgtp_srvc_name

Enter the name of an SGTP service that will be used by this SGSN service

sgtp_srvc_name : Enter a string of 1 to 63 alphanumeric characters.


Usage:

Use this command to access the SGTP Service configuration mode to configure SGTP parameters.


Example:
sgtp-service sgtp1
sm

This command configures session management parameters for this SGSN service. This command can be repeated multiple times to configure each parameter individually.

Platform:

ASR 5000

Product:

SGSN


Privilege:

Security Administrator, Administrator


Syntax 
sm { T3385-timeout time | T3386-timeout time | T3395-timeouttime | guard-timer guard_seconds | max-actv-retransmission number | max-deactv-retransmission number | max-modf-retransmission number }default sm { T3385-timeout | T3386-timeout | T3395-timeout | guard-timer | max-actv-retransmission | max-deactv-retransmission | max-modf-retransmission }
default

Resets the selected timer to the system default value.

T3385-timeout

Retransmission timer for network-initiated Activate Request.

Default is 8 sec

T3386-timeout

Retransmission timer for network-initiated Modify Request.

Default is 8 sec

T3395-timeout

Retransmission timer for network-initiated Deactivate Request.

Default is 8 sec

max-actv-retransmission

Configures maximum retries for activate PDP ctxt request.

Default is 4

max-deactv-retransmission

Configures maximum retries for deactivate PDP ctxt request.

Default is 4

max-modf-retransmission

Configures maximum retries for modify PDP ctxt request.

Default is 4


Usage:

Repeat the command to configure multiple session management parameters for the SGSN service.


Example:
Use a command similar to the following to set the expiry for 5 seconds for the session manager’s T3385-timeout:
sm T3385-timeout 5