Cisco Catalyst 3550 series Software Configuration Manual page 634

Chapter 29 Configuring QoS
Configuring Standard QoS
This example shows how to create a Layer 2 MAC ACL with two permit statements and attach it to an
ingress interface. The first permit statement allows traffic from the host with MAC
address 0001.0000.0001 destined for the host with MAC address 0002.0000.0001. The second permit
statement allows only Ethertype XNS-IDP traffic from the host with MAC address 0001.0000.0002
destined for the host with MAC address 0002.0000.0002.
Switch(config)# mac access-list extended maclist1
Switch(config-ext-mac)# permit 0001.0000.0001 0.0.0 0002.0000.0001 0.0.0
Switch(config-ext-mac)# permit 0001.0000.0002 0.0.0 0002.0000.0002 0.0.0 xns-idp
Switch(config-ext-mac)# exit
Switch(config)# mac access-list extended maclist2
Switch(config-ext-mac)# permit 0001.0000.0003 0.0.0 0002.0000.0003 0.0.0
Switch(config-ext-mac)# permit 0001.0000.0004 0.0.0 0002.0000.0004 0.0.0 aarp
Switch(config-ext-mac)# exit
Switch(config)# class-map macclass1
Switch(config-cmap)# match access-group maclist1
Switch(config-cmap)# exit
Switch(config)# class-map macclass2
Switch(config-cmap)# match access-group maclist2
Switch(config-cmap)# exit
Switch(config)# policy-map macpolicy1
Switch(config-pmap)# class macclass1
Switch(config-pmap-c)# set ip dscp 63
Switch(config-pmap-c)# exit
Switch(config-pmap)# class macclass2
Switch(config-pmap-c)# set ip dscp 45
Switch(config-pmap-c)# exit
Switch(config-pmap)# exit
Switch(config)# interface gigabitethernet0/1
Switch(config-if)# mls qos trust cos
Switch(config-if)# service-policy input macpolicy1
This example shows how to create a policy map that contains per-port per-VLAN classification and
attach it to an ingress interface. A class map, called vlan_class, matches traffic received on VLANs 10,
20 to 30, and 40 that contains IP DSCP 9 (defined in class map dscp_class). If the specified average
traffic rates and the burst sizes are exceeded, the switch drops the packet.
Switch(config)# class-map match-any dscp_class
Switch(config-cmap)# match ip dscp 9
Switch(config-cmap)# exit
Switch(config)# class-map match-all vlan_class
Switch(config-cmap)# match vlan 10 20-30 40
Switch(config-cmap)# match class-map dscp_class
Switch(config-cmap)# exit
Switch(config)# policy-map policymap2
Switch(config-pmap)# class vlan_class
Switch(config-pmap-c)# police 80000 8000 exceed-action drop
Switch(config-pmap-c)# exit
Switch(config-pmap)# exit
Switch(config)# interface gigabitethernet0/1
Switch(config-if)# service-policy input policymap2
This example shows how to create a policy map that defines the CoS value for a port and how to attach
it to an ingress interface. A class map, called class1, matches traffic received on VLANs 10, 20 to 30,
and 40.
Switch (config)# mls qos cos policy-map
Switch (config)# class-map match-all class1
Switch (config-cmap)# match vlan 10 20-30 40
Switch (config-cmap)# match class-map some_class
Switch (config-cmap)# exit
Switch (config)# policy-map policymap1
Switch (config-pmap)# class class1
Catalyst 3550 Multilayer Switch Software Configuration Guide
29-48
78-11194-09