Cisco Systems A9014CFD manual Table Maps, 24-13

Chapter 24 Configuring QoS

Understanding QoS

	Router(config-cmap)# match	ip dscp 23
	Router(config-cmap)# exit
	Router(config)# class-map match-any dscp-63 voice
	Router(config-cmap)# match	ip dscp-63
	Router(config-cmap)# exit
	Router(config)# policy-map	customer-1-ingress
	Router(config-pmap)# class	class-default
	Router(config-pmap-c)#service-policy child_policy-1
Note	You can also enter the match criteria as match vlan 100 200 300 in the child-level policy-map.
	Router(config)# policy-map	child policy-1
	Router(config-pmap)# class	dscp-63 voice
	Router(config-pmap-c)#police cir 10000000 bc 50000
	Router(config-pmap-c)#conform-action set-cos-transmit 5
	Router(config-pmap-c)# exceed-action drop
	Router(config-pmap-c)# exit
	Router(config-pmap)# class	dscp-1 data
	Router(config-pmap-c)# set	cos 0
	Router(config-pmap-c)# exit
	Router(config-pmap)# class	dscp-23 video
	Router(config-pmap-c)# set	cos 4
	Router(config-pmap-c)# set	ip precedence 4
	Router(config-pmap-c)# exit
	Router(config)# interface gigabitethernet0/1
	Router(config-if)# service	instance 100 ethernet
	Router(config-if)#encapsulation dot1q 100
	Router(config-if)#service-policy input customer-1-ingress
	Router(config-if)# rewrite	ingress tag pop 1 symmetric

Router(config-if)# bridge-domain 100

Table Maps

You can use table maps to manage a large number of traffic flows with a single command. You can specify table maps in set commands and use them as mark-down mapping for the policers. You can also use table maps to map an incoming QoS marking to a replacement marking without having to configure a large number of explicit matches and sets. Table maps are used only in input policy maps.

Table maps can be used to:

•Correlate specific CoS, DSCP, or IP precedence values to specific CoS, DSCP, or IP precedence values

•Mark down a CoS, DSCP, or IP precedence value

•Assign defaults for unmapped values

This example creates a table to map specific CoS values to DSCP values. The unspecified values are all mapped to a to-value of 0.

Router(config)# table-map cos-dscp-tablemap

Router(config-tablemap)# map from 5 to 46

Router(config-tablemap)# map from 6 to 56

Router(config-tablemap)# map from 7 to 57

Router(config-tablemap)# exit

The Cisco ASR 901 router supports a maximum of 32 unique table maps. You can enter up to 64 different map from–toentries in a table map. These table maps are supported on the router:

	Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide
OL-23826-09		24-13