Configuring Dscp Maps - Cisco Catalyst 3550 series Software Configuration Manual

Chapter 29 Configuring QoS
To remove the specified aggregate policer from a policy map, use the no police aggregate
aggregate-policer-name policy map configuration mode. To delete an aggregate policer and its
parameters, use the no mls qos aggregate-policer aggregate-policer-name global configuration
command.
This example shows how to create an aggregate policer and attach it to multiple classes within a policy
map. In the configuration, the IP ACLs permit traffic from network 10.1.0.0 and from host 11.3.1.1. For
traffic coming from network 10.1.0.0, the DSCP in the incoming packets is trusted. For traffic coming
from host 11.3.1.1, the DSCP in the packet is changed to 56. The traffic rate from the 10.1.0.0 network
and from host 11.3.1.1 is policed. If the traffic exceeds an average rate of 48000 bps and a normal burst
size of 8000 bytes, its DSCP is marked down (based on the policed-DSCP map) and sent. The policy
map is attached to an ingress interface.
Switch(config)# access-list 1 permit 10.1.0.0 0.0.255.255
Switch(config)# access-list 2 permit 11.3.1.1
Switch(config)# mls qos aggregate-police transmit1 48000 8000 exceed-action
policed-dscp-transmit
Switch(config)# class-map ipclass1
Switch(config-cmap)# match access-group 1
Switch(config-cmap)# exit
Switch(config)# class-map ipclass2
Switch(config-cmap)# match access-group 2
Switch(config-cmap)# exit
Switch(config)# policy-map aggflow1
Switch(config-pmap)# class ipclass1
Switch(config-pmap-c)# trust dscp
Switch(config-pmap-c)# police aggregate transmit1
Switch(config-pmap-c)# exit
Switch(config-pmap)# class ipclass2
Switch(config-pmap-c)# set ip dscp 56
Switch(config-pmap-c)# police aggregate transmit1
Switch(config-pmap-c)# exit
Switch(config-pmap)# exit
Switch(config)# interface gigabitethernet0/1
Switch(config-if)# service-policy input aggflow1
Switch(config-if)# exit

Configuring DSCP Maps

These sections describe how to configure the DSCP maps:
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All the maps, except the DSCP-to-DSCP-mutation map, are globally defined and are applied to all
ports.You can have multiple DSCP-to-DSCP-mutation maps and apply them to different Gigabit-capable
Ethernet ports. However, on 10/100 Ethernet ports, you can attach only one DSCP-to-DSCP-mutation
map to a group of twelve ports.
78-11194-09
Configuring the CoS-to-DSCP Map, page 29-52
Configuring the IP-Precedence-to-DSCP Map, page 29-52
Configuring the Policed-DSCP Map, page 29-53
Configuring the DSCP-to-CoS Map, page 29-54
Configuring the DSCP-to-DSCP-Mutation Map, page 29-55
Catalyst 3550 Multilayer Switch Software Configuration Guide
Configuring Standard QoS
29-51