Set Dscp - Cisco CRS Command Reference Manual

set dscp

set dscp
To mark a packet by setting the IP differentiated services code point (DSCP) in the type of service (ToS) byte,
use the set dscp command in policy-map class configuration mode. To remove a previously set DSCP value,
use the no form of this command.
set dscp [tunnel] dscp-value
no set dscp [tunnel] dscp-value
Syntax Description
tunnel
dscp-value
Command Default
No default behavior or values
Command Modes
Policy map class configuration
Command History
Release
Release 2.0
Release 3.8.0
Release 3.9.0
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task
IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator
for assistance.
After the DSCP bit is set, other quality-of-service (QoS) services can then operate on the bit settings.
Conditional marking marks the DSCP values on the tunnel header as a policer action. Unconditional marking
marks the DSCP tunnel as a policy action. Both conditional and unconditional markings are supported only
in the ingress direction.
The tunnel keyword is available on Layer 2 (Ethernet only) and Layer 3 interfaces in the ingress direction.
Cisco IOS XR Modular Quality of Service Command Reference for the Cisco CRS Router, Release 4.0
102
(Optional) Sets the DSCP on the outer IP header. This command is available on Layer
2 (Ethernet only) and Layer 3 interfaces in the ingress direction.
Number from 0 to 63 that sets the DSCP value. Reserved keywords can be specified
instead of numeric values. Table 2: IP DSCP Reserved Keywords, on page 45
describes the reserved keywords.
Modification
This command was introduced.
The tunnel keyword is supported for QoS in a Multicast Virtual Private
Network (mVPN) enabled network that requires both conditional and
unconditional marking of DSCP bits on the tunnel header.
Support for the tunnel keyword on Layer 2 interfaces was added.
Quality of Service Commands on the Cisco IOS XR Software
OL-23235-03