Cisco Cisco Packet Data Gateway (PDG) Notas De La Versión
SGSN Changes in Release 15.0
SGSN Enhancements for September 30, 2013 ▀
Cisco ASR 5x00 Release Change Reference ▄
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The number of SS7 peers supported per SS7RD has been increased in support of carriers moving to provide Internet-
high speed packet access (iHSPA). This change is an integral segment of the scaling redesign of the link management
mechanism .
high speed packet access (iHSPA). This change is an integral segment of the scaling redesign of the link management
mechanism .
Previous Behavior: SGSN currently supports max of 144 peers perSS7RD and max of 256 peers per LinkMgr.
New Behavior: SGSN now supports a maximum of 256 SS7 peers per SS7RD and a maximum of 512 SS7 peers per
LinkMgr.
LinkMgr.
Initiation of a New Signaling Message Towards GGSN
Previous Behavior: When “Loss of Radio Coverage” feature is enabled on SGSN, in the case of Intra-RAU, with
PLMN change in PMM_IDLE state, the GGSN was not informed of the MS being back in radio coverage after RAU
completion.
PLMN change in PMM_IDLE state, the GGSN was not informed of the MS being back in radio coverage after RAU
completion.
New Behavior: Update PDP Context Request is initiated after RAU accept to inform the GGSN that the UE is back in
radio coverage.
radio coverage.
Last Known Location of Subscriber
Previous Behavior: There was no last RAI information available to operator for detached subscribers.
New Behavior: Last known location of a detached subscriber is stored in the subscriber’s database structure and can
now be viewed by the operator in the output of the
now be viewed by the operator in the output of the
show subscribers
command.
License Control for MOCN Network Sharing
Previous Behavior: Network sharing was not a license controlled feature.
New Behavior: With the release of 15.0, both 2G and 3G MOCN functionality is now license controlled and the license
is required to use all previously available network sharing configuration commands, e.g., network-sharing commands
for cs-ps coordination and failure code in the IuPS Service configuration mode. For details, contact your Cisco Account
Representative.
is required to use all previously available network sharing configuration commands, e.g., network-sharing commands
for cs-ps coordination and failure code in the IuPS Service configuration mode. For details, contact your Cisco Account
Representative.
Lower Limit of Implicit Detach Timeout (IDT) Timer Modified
Previous Behavior: The lower configurable limit of the Implicit Detach Timeout (IDT) timer is “1” second.
New Behavior: The lower configurable limit of the IDT timer is updated to “240” seconds. The Implicit Detach
Timeout (IDT) timer is configured through the
Timeout (IDT) timer is configured through the
gmm
command in SGSN Service Configuration Mode.
For more information on the
gmm
command refer to Cisco ASR 5x00 Command Line Interface Reference.
Lower Limit Validation For ‘sctp-max-out-strms’
Previous Behavior: A crash occurs when “sctp-max-out-strms” is configured to a value less than “2”.
New Behavior: If “sctp-max-out-strms” is configured to a value less than “2”, a warning message is displayed and
“sctp-max-out-strms” is set to the default value of “2”. The warning message displayed when the value “sctp-max-out-
strms” is configured less than “2”:
“sctp-max-out-strms” is set to the default value of “2”. The warning message displayed when the value “sctp-max-out-
strms” is configured less than “2”:
Warning: Value below 2 is not permitted ; Default value set is 2
Modify Bearer Request Suppressed During an ISR Intra RAU Scenario (no change in SGW)
Previous Behavior: In release 14.0 if ISR is active, the modify bearer request is triggered with S4-SGSN U-TEID for
every Intra-RAU request (that is, without SGW change), to avoid dual paging during Downlink Data notification. When
a Modify Bearer Request is sent to SGW with SGSN S4U TEID, it indicates that the subscriber is currently with the
every Intra-RAU request (that is, without SGW change), to avoid dual paging during Downlink Data notification. When
a Modify Bearer Request is sent to SGW with SGSN S4U TEID, it indicates that the subscriber is currently with the