Cisco Catalyst 4500 Series Administration Guide

42-26
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
To configure class-level shaping in a service policy, perform this task:
To delete an existing policy map, use the no policy-map policy-map-name global configuration
command. To delete an existing class, use the no class class-name policy-map configuration command.
To disable the average-rate traffic shaping, use the no shape average policy-map class configuration
command.
This example shows how to configure class-level, average-rate shaping. It limits traffic class class1 to a
data transmission rate of 256 kbps:
Switch# configure terminal
Switch(config)# policy-map policy1
Switch(config-pmap)# class class1
Switch(config-pmap-c)# shape average 256000
Switch(config-pmap-c)# exit
Switch(config-pmap)# exit
Switch(config)# interface gigabitethernet1/1
Command Purpose
Step 1
Switch# configure terminal
Enters global configuration mode.
Step 2
Switch(config)# policy-map
policy-map-name
Creates a policy map by entering the policy-map name, and enter
policy-map configuration mode.
By default, no policy maps are defined.
Step 3
Switch(config-pmap)# class class-name
Specifies the name of the class whose traffic policy you want to
create or change, and enter policy-map class configuration mode.
By default, no traffic classes are defined.
Step 4
Switch(config-pmap-class)# shape
average {cir-bps [optional_postfix] |
percent percent}
Enables average-rate traffic shaping.
You can specify the shaping rate in absolute value or as a percentage:
• For cir-bps [optional_postfix], specify the shaping rate in bps.
Range is 32000 to 10000000000 bps. Supply an optional postfix
(K, M, G).
• For percent, specify the percentage of link rate to shape the class
of traffic. The range is 1 to 100.
By default, average-rate traffic shaping is disabled.
Step 5
Switch(config-pmap-class)# exit
Returns to policy-map configuration mode.
Step 6
Switch(config-pmap)# exit
Returns to global configuration mode.
Step 7
Switch(config)# interface interface-id
Specifies a physical port and enter interface configuration mode.
Step 8
Switch(config-interface)#
service-policy output policy-map-name
Specifies the policy-map name, and apply it a physical interface.
Step 9
Switch(config-interface)# end
Returns to privileged EXEC mode.
Step 10
Switch# show policy-map
[policy-map-name [class
class-map-name]]
or
Switch# show policy-map interface
interface-id
Verifies your entries.
Step 11
Switch# copy running-config
startup-config
(Optional) Saves your entries in the configuration file.

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