Cisco Cisco Packet Data Gateway (PDG)
SGSN Changes in Release 16
▀ SGSN Enhancements for 16.0
▄ Release Change Reference, StarOS Release 16
524
The SGSN provides a mechanism to define the number of authentication vectors (AVs) that can be requested from the
HSS by the SGSN in an Authentication Info Request (AIR) message. New vectors are fetched when no more vectors are
available.
HSS by the SGSN in an Authentication Info Request (AIR) message. New vectors are fetched when no more vectors are
available.
As well, it is possible to configure a minimum (low watermark) threshold value (number of unused vectors present) and
when the current number of unused vectors falls below this value, new vectors will be fetched. This low watermark is
set with the
when the current number of unused vectors falls below this value, new vectors will be fetched. This low watermark is
set with the
min-unused-auth-vectors
in the call control profile.
Previous Behavior: Prior to Release 16, the maximum configurable number of authentication vectors to be retrieved
from HSS is 3.
from HSS is 3.
New Behavior: The new maximum configurable number of authentication vectors to be retrieved from the HSS is 5.
Customer Impact: The management of authentication vectors is key in order to maintain service accessibility and
delivery when there is a problem on the Gr / S6a or S6d interface (for example: link failure, DRF failure, HSS failure).
delivery when there is a problem on the Gr / S6a or S6d interface (for example: link failure, DRF failure, HSS failure).
Command Changes
auth-request
The value range for the
num-auth-vectors
keyword of this command has been extended from 3 to 5.
configure
context context_name
hss-peer-service service_name
auth-request num-auth-vectors num
default auth-request num-auth-vectors
end
Notes:
num
must be an integer from 1 to 5.
default
returns the minimum AV configuration to 1.
CSCuh57775 - Common Routing Area for 2G and 3G
Feature Changes
Common Routing Area for 2G and 3G
If the RA is configured in both 2G and 3G, the SGSN now supports paging in both the RATs. In previous releases
common Routing Area across 2G and 3G was not supported completely. Paging was done only in the last known RAT
and power-off detach from other RAT was not supported.
common Routing Area across 2G and 3G was not supported completely. Paging was done only in the last known RAT
and power-off detach from other RAT was not supported.
With the introduction of this feature, the following enhancements have been made:
1. If paging has to be done in RA which is common across the RATs, the SGSN supports paging initiation in both
the RATs.
2. The SGSN accepts power-off detach from the common RA.