Cisco Cisco Packet Data Gateway (PDG)
SGSN Changes in Release 17
▀ SGSN Enhancements for 17.1
▄ Release Change Reference, StarOS Release 17
486
CSCup99718 - SGSN should modify MR timer value based on backoff timer
value.
Feature Changes
SGSN Modifications to MR Timer
Previous Behavior: If the configured MR timer value is less than the t3346 backoff timer by 4 minutes, then the SGSN
does not modify the MR timer based on the sent value of the t3346 backoff timer.
does not modify the MR timer based on the sent value of the t3346 backoff timer.
New Behavior: When the configured MR timer value is less than the t3346 timer by 4 minutes, then the SGSN
modifies the MR timer based on the t3346 backoff timer value, sent in RAU Rejects and Service Rejects, + 4 minutes.
modifies the MR timer based on the t3346 backoff timer value, sent in RAU Rejects and Service Rejects, + 4 minutes.
If the t3346 backoff timer is less than the extended t3312 timer sent in Attach Accept and RAU Accept, then the SGSN
modifies the MR timer based on the sent extended t3312 timer.
modifies the MR timer based on the sent extended t3312 timer.
CSCuq37542 - Assertion failure at sess/sgsn/sgsn-app/pmm/pmm_fsm.c:6829
Feature Changes
New Iu release Disconnect Reasons and Statistics
Previous Behavior: Disconnect reasons and statistics are not available to track service requests received in direct
transfer with unknown-ptmsi and local Intra-RAU received in direct transfer with unknown-ptmsi.
transfer with unknown-ptmsi and local Intra-RAU received in direct transfer with unknown-ptmsi.
New Behavior: New Iu release disconnect reasons and corresponding statistics are added to track service requests
received in direct transfer with unknown-ptmsi and local Intra-RAU received in direct transfer with unknown-ptmsi.
The following Iu disconnect reasons are added:
received in direct transfer with unknown-ptmsi and local Intra-RAU received in direct transfer with unknown-ptmsi.
The following Iu disconnect reasons are added:
GMMSM_IU_REL_RSN_CURR_IU_UNK_PTMSI_SRV_REQ_DT: The current access released due to
Service request received in direct transfer with unknown-ptmsi value.
GMMSM_IU_REL_RSN_CURR_IU_UNK_PTMSI_INTRA_RAU_DT: The current access released due to
Local Intra Rau received in direct transfer with unknown-ptmsi value.
Performance Indicator Changes
show gmm-sm statistics iups-service verbose
The following new statistics are added to track service requests received in direct transfer with unknown-ptmsi and local
Intra-RAU received in direct transfer with unknown-ptmsi:
Intra-RAU received in direct transfer with unknown-ptmsi:
cur-iu-srv-req-dt-ukn-ptmsi: This counter is incremented when the current access is released due to Service
request received in direct transfer with unknown-ptmsi value.
cur-iu-intra-rau-dt-ukn-ptmsi: This counter is incremented when current access is released due to local Intra-
RAU received in direct transfer with unknown-ptmsi value.