Cisco Catalyst 4500 Series Command Reference Guide

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Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.4.0SG and IOS 15.1(2)SG)
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Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
auto qos trust
auto qos trust
To generate QoS configurations for trusted interfaces, use the auto qos trust interface command.
auto qos trust
Syntax Description This command has no arguments or keywords.
Defaults This command has no default settings.
Command Modes Interface configuration mode
Command History
Usage Guidelines Global Level Commands Generated
After you apply auto-QoS srnd4 commands to an interface, they generate one or more of the following
templates (A and B) at the global configuration level. Typically, a command generates a series of
class-maps that either match on ACLs or on DSCP or CoS values to differentiate traffic into application
classes. An input policy is generated, which matches the generated classes, sets qos-groups on the
classes, and in some cases, polices the classes to a set bandwidth. (A qos-group is simply a numerical
tag that allows different application classes to be treated as one unit. Outside the switch’s context, it has
no significance.) Additionally, eight egress-queue class-maps are generated, matching the qos-groups set
in the input policy. The actual egress output policy assigns a queue to each of these eight class-maps.
The command only generates templates as needed. For example, on first use of a new command, global
configurations that define the eight queue egress service-policy are generated. Subsequently, auto-QoS
commands applied to other interfaces do not generate templates for egress queuing. This is because all
auto-qos commands rely on the same eight queue models after migration, and they will have already been
generated from the first use of the command.
The global templates defined in A and B.
A. Template of application classes used by the auto qos trust command
This template also includes the input service-policy for the auto qos video cts, auto qos video
ip-camera, and auto qos trust commands. Because these three commands are the only ones that use the
AutoQos-4.0-Input-Policy, you should include that policy in the template that defines the application
classes used by the commands.
class-map match-any AutoQos-4.0-VoIP
match dscp ef
match cos 5
class-map match-all AutoQos-4.0-Broadcast-Vid
match dscp cs5
class-map match-all AutoQos-4.0-Realtime-Interact
match dscp cs4
Release Modification
15.1(1)SG,
15.1(1)SG IOS-XE 3.3.0
Support for this command was introduced on the Catalyst 4500 series
switch.

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