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Ethernet Card Software Feature and Configuration Guide, R7.2

January 2009

Chapter 14 Configuring Quality of Service

Configuring CoS-Based QoS

Use the no form of the command to detach a traffic policy from an interface. The service-policy

command syntax is as follows:

service-policy {input | output} policy-map-name

no service-policy {input | output} policy-map-name

To attach a traffic policy to an interface, use the following commands in global configuration mode, as

needed:

Configuring CoS-Based QoS

The global cos commit cos-value command allows the ML-Series card to base the QoS treatment for a

packet coming in on a network interface on the attached CoS value, rather than on a per-customer-queue

policer.

CoS-based QoS is applied with a single global cos commit cos-value command, as shown in Table 14-3.

Monitoring and Verifying QoS Configuration

After configuring QoS on the ML-Series card, the configuration of class maps and policy maps can be

viewed through a variety of show commands. To display the information relating to a traffic class or

traffic policy, use one of the commands in

Table 14-4 in EXEC mode, as needed. Table 14-4 describes

the commands that are related to QoS status.

Step 1

Router(config)# interface

interface-id

Enters interface configuration mode, and specifies the

interface to apply the policy map.

Valid interfaces are limited to physical Ethernet and POS

interfaces.

Note Policy maps cannot be applied to SPR interfaces,

subinterfaces, port channel interfaces, or Bridge

Group Virtual Interfaces (BVIs).

Step 2

Router(config-if)# service-policy

output

policy-map-name

Specifies the name of the traffic policy to be attached to the

output direction of an interface. The traffic policy evaluates

all traffic leaving that interface.

Step 3

Router(config-if)# service-policy

input

policy-map-name

Specifies the name of the traffic policy to be attached to the

input direction of an interface. The traffic policy evaluates

all traffic entering that interface.

Table 14-3 CoS Commit Command

Command Purpose

Router(config)# cos-commit

cos-value

Labels packets that come in with a CoS equal to or higher than the

cos-value as CIR and packets with a lower CoS as DE.

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