Cisco ME 3400 Command Reference Manual page 407

Ethernet access switch

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Chapter 2 Cisco ME 3400 Ethernet Access Switch Cisco IOS Commands

You can use the match cos class-map configuration command and the set cos policy-map class

configuration command together to allow switches to interoperate and provide quality of service (QoS)

based on the CoS markings. You can also configure Layer 2 to Layer 3 mapping by matching on the CoS

value because switches can already match and set CoS values.

If you are using this command to perform enhanced packet marking, you can use the from-field packet

marking option for mapping and setting the CoS value. The supported from-field marking categories are:

CoS, DSCP, and IP precedence.

If you specify a from-field category, but do not specify the table keyword and table-map-name, the

default action is to copy the value associated with the from-field category as the CoS value. For example,

if you enter the set cos precedence command, the precedence value is copied and used as the CoS value.

If you enter the set cos dscp command, the DSCP value is copied and used as the CoS value.

This example shows how to set all FTP traffic to cos 3:

Switch(config)# policy-map policy_ftp

Switch(config-pmap)# class ftp_class

Switch(config-pmap-c)# set cos 3

Switch(config-pmap-c)# exit

This example shows how to assign a DSCP to CoS table map to a class:

Switch(config)# policy-map inpolicy

Switch(config-pmap)# class class-default

Switch(config-pmap-c)# set cos dscp table dscp-cos-tablemap

Switch(config-pmap)# exit

You can verify your settings by entering the show policy-map privileged EXEC command.

Related Commands

show policy-map

Defines a traffic classification match criteria for the specified class-map name.

Creates or modifies a policy map that can be attached to multiple ports to

specify a service policy.

Displays QoS policy maps.

Cisco ME 3400 Ethernet Access Switch Command Reference