Cisco Cisco Tunnel Terminating Gateway (TTG)
S-GW Changes in Release 17
S-GW Enhancements for 17.0 ▀
Release Change Reference, StarOS Release 17 ▄
585
New Behavior: MBReq with P-CSCF Restoration will be supported at S-GW.
CSCum65507, CSCum88401 - Support DDN Profile at SGW
Feature Changes
DDN Profile Support on the S-GW
As part of the implementation for CSCum88401, the S-GW now supports DDN profiles. Specifically, it allows the
configuration of a ddn-apn-profile for DDN configuration of preferential bearers. The existing configuration at the APN
configuration level is enhanced to associate a ddn-apn-profile which allows qci specific configuration. Only 4 QCI
values are supported for configuration per ddn-apn-profile.
configuration of a ddn-apn-profile for DDN configuration of preferential bearers. The existing configuration at the APN
configuration level is enhanced to associate a ddn-apn-profile which allows qci specific configuration. Only 4 QCI
values are supported for configuration per ddn-apn-profile.
The existing configuration at sgw-service config level is enhanced to set the ddn success_action timer. This timer
applies to the case where DDN Ack is received in response to DDN from S-GW. But, the subsequent DDN Failure is
dropped on the wire. In such a case, S-GW is stuck waiting for MBR and does not come out of such a situation.
applies to the case where DDN Ack is received in response to DDN from S-GW. But, the subsequent DDN Failure is
dropped on the wire. In such a case, S-GW is stuck waiting for MBR and does not come out of such a situation.
With this new timer, the S-GW would start it on receiving DDN Ack and on expiry, then reinitiate the DDN towards the
UE. This time, it will start the timer once again to see if the MBR is received or not. If no MBR is received, all buffered
data is cleared and S-GW goes into no data available state. So, only on new data, the paging will be initiated again.
UE. This time, it will start the timer once again to see if the MBR is received or not. If no MBR is received, all buffered
data is cleared and S-GW goes into no data available state. So, only on new data, the paging will be initiated again.
Command Changes
associate ddn-apn-profile <profile_name>
This command has been added to APN Profile Configuration Mode to associate a DDN APN Profile with an APN
Profile configuration.
Profile configuration.
configure
apn-profile apn_profile_name
associate ddn-apn-profile ddn_apn_profile_name
remove associate ddn-apn-profile
end
ddn-apn-profile
This command has been added to Global Configuration Mode to enter DDN APN Profile Configuration Mode.
configure
ddn-apn-profile ddn-apn_profile_name
no ddn-apn-profile ddn-apn_profile_name
end
qci <value> ddn failure-action pkt-drop-timer <value>