Cisco Catalyst 4500 Series Software Configuration Guide

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Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 44 Configuring Quality of Service
Configuring QoS on a Standalone Supervisor Engine 6-E/6L-E or Supervisor Engine 7-E/7L-E/8-E
To remove the explicit queue size use the no queue-limit command under the class in a policy-map.
This example shows how to configure a class-based queue with an explicit queue-limit command. It
limits traffic class class1 to a queue of size 4048:
Switch# configure terminal
Switch(config)# policy-map policy1
Switch(config-pmap)# class class1
Switch(config-pmap-c)# shape average 256000
Switch(config-pmap-c)# queue-limit 4048
Switch(config-pmap-c)# exit
Switch(config-pmap)# exit
Switch(config)# interface gigabitethernet1/1
Switch(config-if)# service-policy output policy1
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)# queue-limit
number-of-packets
Provides an explicit queue size in packets. The size must be a
multiple of 8 and ranging from 16 to 8184.
Step 6
Switch(config-pmap-class)# exit
Returns to policy-map configuration mode.
Step 7
Switch(config-pmap)# exit
Returns to global configuration mode.
Step 8
Switch(config)# interface interface-id
Specifies a physical port and enter interface configuration mode.
Step 9
Switch(config-interface)#
service-policy output policy-map-name
Specifies the policy-map name, and apply it a physical interface.
Step 10
Switch(config-interface)# end
Returns to privileged EXEC mode.
Step 11
Switch# show policy-map
[policy-map-name [class
class-map-name]]
or
Switch# show policy-map interface
interface-id
Verifies your entries.
Step 12
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