Cisco ASR 5000 Series Administration Guide

DSCP Marking of SRP Messages
You can enable separate DSCP marking of SRP control and checkpoint messages. The dscp-marking command
sets DSCP marking values for SRP control and checkpoint (session maintenance) messages.
configure
context context_name
service-redundancy-protocol
dscp-marking { control | session } dscp_value
Notes:
•
dscp_value can be:
◦ af11 – Assured Forwarding Class 1 low drop PHB (Per Hop Behavior)
◦ af12 – Assured Forwarding Class 1 medium drop PHB
◦ af13 – Assured Forwarding Class 1 high drop PHB
◦ af21 – Assured Forwarding Class 2 low drop PHB
◦ af22 – Assured Forwarding Class 2 medium drop PHB
◦ af23 – Assured Forwarding Class 2 high drop PHB
◦ af31 – Assured Forwarding Class 3 low drop PHB
◦ af32 – Assured Forwarding Class 3 medium drop PHB
◦ af33 – Assured Forwarding Class 3 high drop PHB
◦ af41 – Assured Forwarding Class 4 low drop PHB
◦ af42 – Assured Forwarding Class 4 medium drop PHB
◦ af43 – Assured Forwarding Class 4 high drop PHB
◦ be – Best effort Per-Hop-Behaviour (default)
◦ cs1 – Class selector 1 PHB
◦ cs2 – Class selector 2 PHB
◦ cs3 – Class selector 3 PHB
◦ cs4 – Class selector 4 PHB
◦ cs5 – Class selector 5 PHB
◦ cs6 – Class selector 6 PHB
◦ cs7 – Class selector 7 PHB
◦ ef – Expedited Forwarding PHB, for low latency traffic
Optimizing Switchover Transitions
There are several SRP configuration options that reduce the transition time from the active to standby gateways
(primarily P-GW) in support of VoLTE traffic.
ASR 5500 System Administration Guide, StarOS Release 21.4
347
Interchassis Session Recovery
Configuring the Service Redundancy Protocol (SRP) Context

Cisco ASR 5000 Series Specifications

General

Brand	Cisco
Model	ASR 5000 Series
Category	Network Router
Language	English