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Cisco 10000 Series Router Quality of Service Configuration Guide
OL-7433-09
Chapter 7 Marking Traffic
Configuring Traffic Marking
Router(config-pmap-c)#
exit
Router(config-pmap)#
exit
Router(config)#
interface GigabitEthernet 1/0/0
Router(config-if)#
service-policy input Policy1
Example 7-8
shows how to configure the router to classify packets based on the QoS group ID of the
packet. In this example, the router checks outbound packets on Ethernet interface 1/0/0 for QoS group
ID 5, assigns the matching packets to the traffic class named QoSGroup, defined in the policy map
named Gold, and sets the packet DSCP bits to DSCP 0 (best effort).
Example 7-8
Configuring QoS Group-Based Classification
Router(config)#
class-map QoSGroup
Router(config-cmap)#
match qos-group 5
Router(config-cmap)#
exit
Router(config)#
policy-map Gold
Router(config-pmap)#
class QoSGroup
Router(config-pmap-c)#
set dscp 0
Router(config-pmap-c)#
exit
Router(config-pmap)#
exit
Router(config)#
interface Ethernet 1/0/0
Router(config-if)#
service-policy output Gold
Setting the ATM Cell Loss Priority Bit
To set the ATM cell loss priority (CLP) bit to 1, enter the following commands beginning in global
configuration mode:
Command
Purpose
Step 1
Router(config)#
policy-map
policy-map-name
Specifies the name of the policy map and enters policy-map
configuration mode.
policy-map-name
is the name of the policy map.
Step 2
Router(config-pmap)#
class
class-map-name
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.
Step 3
Router(config-pmap-c)#
set atm-clp
Sets the cell loss priority bit to 1. The router discards packets
with the CLP bit set to 1 before it discards packets with the
CLP bit set to 0.
Note
To change the CLP bit back to 0, use the
no set atm-clp
command.
