Cisco Cisco Packet Data Interworking Function (PDIF)
S-GW Changes in Release 16
S-GW Enhancements for 16.4 ▀
Release Change Reference, StarOS Release 16 ▄
547
S-GW Enhancements for 16.4
This section identifies all of the S-GW enhancements included in this release:
Feature Changes - new or modified features or behavior changes. For details, refer to the S-GW Administration Guide
for this release.
for this release.
Command Changes - changes to any of the CLI command syntax. For details, refer to the Command Line Interface
Reference for this release.
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 Statistics and Counters
Reference for this release.
fields in new or modified schema and/or show command output. For details, refer to the 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 S-GW.
AAA Enhancements
CF Enhancements
ECS Enhancements
Firewall Enhancements
GTPP Enhancements
Lawful Intercept Enhancements
MVG Enhancements
NAT Enhancements
SNMP MIB Enhancements
System and Platform Enhancements
CSCup48554, CSCuq10884 - SGW should allow partial context Replacement
Applicable Products: S-GW
Feature Changes
Partial Context Replacement Support on the S-GW
As per existing requirements, a SGW accepts an incoming Create Session Request message colliding with an existing
PDN connection context only if is received with the TEID 0 in the GTP-C header.
PDN connection context only if is received with the TEID 0 in the GTP-C header.
This can result in a failure to establish a PDN connection or move a PDN connection to a new SGW, in those error
scenarios where a UE context already exists in both the MME/SGSN and SGW, and where a new Create Session
Request is received by the SGW with a non-zero TEID which collides with an existing PDN connection context in the
SGW. It does not help that the SGW rejects the Create Session Request if it collides with an existing PDN connection
scenarios where a UE context already exists in both the MME/SGSN and SGW, and where a new Create Session
Request is received by the SGW with a non-zero TEID which collides with an existing PDN connection context in the
SGW. It does not help that the SGW rejects the Create Session Request if it collides with an existing PDN connection