Specifications

2-51
Catalyst 4500 Se ries S wit ch C is co IO S C om mand R efer ence —Re lease I OS XE 3 .3.0 XO(1 5.1 (1)XO)
OL_28738-01
Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
auto qos trust
auto qos trus t
To generate QoS conf iguration s for tr usted interfaces, use th e auto qos trust interface comm an d.
auto qos tru st
Syntax Description This command has no arguments or keywords.
Defaults This command has no default settings.
Command Modes Interface configur ation mode
Usage Guidelines Global Level Commands Generated
After you apply auto-QoS srnd4 comma nds to an interface, they gen erate one or more of the followi ng
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 g enerated, w hich matches th e gene rated cl asses, sets qo s-groups o n 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 a s neede d. For e xample, o n first use of a new c ommand, glob al
configurations that define the eight que ue egress service-po licy are generated. Subs equently, 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 com mand.
The global templates defined in A and B.
A. Template of application classes used by the a uto qos tr ust 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. Bec ause th ese thr ee comma nds ar e the onl y ones th at use the
AutoQos-4.0-Input-Poli cy, you should include that pol icy in the template that define s the application
classes used by the c ommands.
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
class-map match-all AutoQos-4.0-Network-Ctrl
match dscp cs7
class-map match-all AutoQos-4.0-Internetwork-Ctrl
match dscp cs6
class-map match-any AutoQos-4.0-Signaling
match dscp cs3
match cos 3
class-map match-all AutoQos-4.0-Network-Mgmt