Cisco Cisco Packet Data Gateway (PDG)
P-GW Changes in Release 17
P-GW Enhancements for 17.0 ▀
Release Change Reference, StarOS Release 17 ▄
397
CSCum85473, CSCui11396 - GTP-U DSCP marking needs enhancement
Feature Changes
DSCP Marking for GTP-U Echo
This feature adds CLI in GTP-U service to allow provisioning of DSCP value for GTP-U echo. This is similar to the
DSCP value for GTP-C echo configuration that already exists in the eGTP service.
DSCP value for GTP-C echo configuration that already exists in the eGTP service.
Command Changes
ip qos-dscp
This is a new command that configures the quality of service (QoS) differentiated service code point (DSCP) per-hop
behavior (PHB) to be marked on the outer header of signalling packets originating from the LTE component.
behavior (PHB) to be marked on the outer header of signalling packets originating from the LTE component.
configure
context context_name
gtpu-service service_name
ip qos-dscp { af11 | af12 | af13 | af21 | af22 | af23 | af31 | af32 | af33 | af41
| af42 | af43 | be | cs1 | cs2 | cs3 | cs4 | cs5 | cs6 | cs7 | ef }
| af42 | af43 | be | cs1 | cs2 | cs3 | cs4 | cs5 | cs6 | cs7 | ef }
[ default | no ] ip qos-dscp
end
Notes:
This is a standards-based feature (RFC 2597 and RFC 2474).
DSCP marking will be implemented only for GTP-U ECHO Request and Response messages.
CSCum88464, CSCup56698 - Intelligent graceful PDN disconnection during
maintenance-mode
Feature Changes
Intelligent Graceful PDN Disconnection During Maintenance Mode
When a gateway is in maintenance mode and new-call policy is enabled at a service or APN level, it only rejects new
calls as the rejection is at the demux. For PDNs that have dedicated bearers, even though the APN is in maintenance
mode, since the default bearer is already up, network-initiated dedicated bearers will still be accepted by the gateway
and thus block clearing of all PDNS. CLI has been added to clear the entire PDN when the last VoLTE dedicated bearer
goes down.
calls as the rejection is at the demux. For PDNs that have dedicated bearers, even though the APN is in maintenance
mode, since the default bearer is already up, network-initiated dedicated bearers will still be accepted by the gateway
and thus block clearing of all PDNS. CLI has been added to clear the entire PDN when the last VoLTE dedicated bearer
goes down.