Cisco Cisco Packet Data Gateway (PDG)
SGSN Changes in Release 17
▀ SGSN Enhancements for 17.7
▄ Release Change Reference, StarOS Release 17
468
SGSN Enhancements for 17.7
This section identifies all of the SGSN enhancements included in this release:
Feature Changes - new or modified features or behavior changes. For details, refer to the SGSN Administration Guide
for this release.
for this release.
Command Changes - changes to any of the CLI command syntax. For details, refer to the ASR 5x00 Command Line
Interface Reference for this release.
Interface Reference for this release.
Performance Indicator Changes - new, modified, and deprecated bulk statistics, disconnect reasons, counters and/or
fields in new or modified schema and/or show command output. For details, refer to the ASR 5x00 Statistics and
Counters Reference for this release.
fields in new or modified schema and/or show command output. For details, refer to the ASR 5x00 Statistics and
Counters Reference for this release.
Important:
This release includes enhancements that are applicable to multiple products. The following lists the
various multi-product enhancements sections, some of which might include content applicable to your SGSN.
AAA Enhancements
CF Enhancements
ECS Enhancements
Firewall Enhancements
GTPP Enhancements
Lawful Intercept Enhancements
MVG Enhancements
NAT Enhancements
SNMP MIB Enhancements
System and Platform Enhancements
CSCux33388, CSCur41900 - CLI Control for Target Access Restriction
CSCux33388 - InterSGSN 3G to 2G HO fails
CSCur41900 -Rollback Behavior in EPC during TAU/RAU Needs to be Corrected
Feature Changes
Target Access Restriction
Target Access Restriction feature was added to the SGSN and MME in release 17.4. The purpose of this feature is to
avoid rollback behavior that exists in RAU and TAUs by checking target RAT Type IE present in the Context Request
at the source node, and then rejecting the TAU/RAU based on the subscriber’s ARD profile earlier in the cycle if the
target RAT is restricted for the subscriber. Rollback behavior caused late TAU/RAU rejection, resulting in PDP/bearer
deletion for the MME, PGW, and the SGSN, requiring the UE to reattach and reactivate lost PDP/bearer.
avoid rollback behavior that exists in RAU and TAUs by checking target RAT Type IE present in the Context Request
at the source node, and then rejecting the TAU/RAU based on the subscriber’s ARD profile earlier in the cycle if the
target RAT is restricted for the subscriber. Rollback behavior caused late TAU/RAU rejection, resulting in PDP/bearer
deletion for the MME, PGW, and the SGSN, requiring the UE to reattach and reactivate lost PDP/bearer.