Cisco Catalyst 4500 Series Administration Guide

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Software Configuration Guide—Release IOS XE 3.6.0E and IOS 15.2(2)E
OL_28731-01
Chapter 42 Configuring Quality of Service
Configuring VSS QoS
Step 4 Attach the policy to one or more QoS targets.
Examples
The following examples illustrate how to configure Flow based QoS policy and apply microflow policers
on individual flows.
Example 1
This example assumes there are multiple users (identified by source IP address) on the subnet
192.168.10.*. The configuration below shows how to configure a flow based QoS policy that uses micro
policing to limit the per-user traffic with the source address in the range of 192.168.10.*. The microflow
policer is configured with a CIR of 1Mbps, “conform action” as transmit, and “exceed action” as drop.
Step 1: Define an ACL to match traffic with specified source address.
Switch(config)# ip access-list extended UserGroup1
Switch(config-ext-nacl)# permit ip 192.168.10.0 0.0.0.255 any
Switch(config-ext-nacl)# exit
Switch(config)#
Step 2: Define a flow record to create flows with source address as key.
Switch(config)# flow record r1
Switch(config-flow-record)# match ipv4 source address
Switch(config-flow-record)# exit
Switch(config)#
Step 3: Configure classmap to match on the UserGroup1 and specify flow record definition for flow
creation.
Switch(config)# class-map match-all c1
Switch(config-cmap)# match access-group name UserGroup1
Switch(config-cmap)# match flow record r1
Switch(config-cmap)# exit
Switch(config)#
Step 4: Configure flow based QoS policy-map with microflow policing action for the matching traffic.
Switch(config)# policy-map p1
Switch(config-pmap)# class c1
Switch(config-pmap-c)# police cir 1m
Switch(config-pmap-c-police)# conform-action transmit
Switch(config-pmap-c-police)# exceed-action drop
Switch(config-pmap-c-police)# exit
Switch(config-pmap-c)# exit
Switch(config-pmap)# exit
Step 5: Attach flow QoS policy to the interface.
Switch(config)# interface gigabitEthernet3/1
Switch(config-if)# service-policy input p1
Switch(config-if)#
Use the show commands (described in the policy and marking sections of this chapter) to display the
policy-map configuration and interface specific policy-map statistics.

Cisco Catalyst 4500 Series Specifications

General

Series	Catalyst 4500 Series
Category	Switch
Layer Support	Layer 2, Layer 3
Form Factor	Modular chassis
Stackable	No
Chassis Slots	3, 6, 7, 10
Power Supply Options	AC, DC
Redundancy	Power supply, Supervisor engine
Network Management	Cisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
Features	Security, QoS
Port Density	Up to 384 ports per chassis
Security Features	802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine	8-E