Configuring Ip Dscp Marking - Cisco 10000 Series Configuration Manual

Configuring Traffic Marking
Router(config)# interface GigabitEthernet 2/0/1
Router(config-if)# service-policy output Second

Configuring IP DSCP Marking

To mark the DSCP field of packets, enter the following commands beginning in global configuration
mode:
Command
Step 1
Router(config)# policy-map policy-map-name
Step 2
Router(config-pmap)# class class-map-name
Step 3
Router(config-pmap-c)# set ip dscp
{dscp-value | afxy | csx | ef | default}
Cisco 10000 Series Router Quality of Service Configuration Guide
7-24
Purpose
Specifies the name of the policy map and enters policy-map
configuration mode.
policy-map-name is the name of the policy map.
Assigns the traffic class you specify to the policy map. Enters
policy-map class configuration mode.
class-map-name is the name of a previously configured class
map and is the traffic class for which you want to define QoS
actions.
Sets the DSCP value in the ToS byte.
ip specifies that the match is for IPv4 packets only. You must
specify this keyword.
dscp dscp-value sets the DSCP value. Valid values are from 0
to 63.
Instead of specifying a numeric dscp-value, you can specify
one of the following reserved keywords:
• afxy indicates assured forwarding points. The first
number (x) indicates the AF class. Valid values are from
1 to 4. The second number (y) indicates the level of drop
preference within each class. Valid values are from
1 (low drop) to 3 (high drop).
cs indicates class selector code points that are
•
backward-compatible with IP precedence. Valid values
for x are 1 through 7. The CS code points (CS1 through
CS7) are identical to IP precedence values 1 through 7.
• ef indicates expedited forwarding.
• default indicates best effort or DSCP 0.
For more information, see
Chapter 7 Marking Traffic
Table 7-4 on page 7-8.
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