Specifications

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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)
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Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
auto qos video
auto qos vide o
To generate QOS configuration for cisco-telepresence or cisco-camera interfaces (conditional trust
through CDP), use the auto qos video interface configuration command.
auto qos video {cts | ip-cam era}
Syntax Description
Defaults This command has no default settings.
Command Modes Interface configur ation mode
Usage Guidelines The auto qos video command trusts an interface only if Cisco TelePresence is detected. Else, the port is
untrusted.
Global Level Commands Generated
When auto-Qos srnd4 commands are applied to an interface, they generate one or more of the following
templates 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 also generated, which matches t he 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.) Furthermor e, eight egress-queue cla ss-maps are generate d, which match the qos-g roups
set in the input policy. The actual egress output policy assigns a queue to each of the eight egress-q ueue
class-maps.
The srnd4 commsands generate th e templates only as needed. For example, on first use of the new
command, global configurati ons that define the eight queue egress service-polic y are generated.
Subsequently, auto-QoS commands applied to other interfaces do not generate templates for egress
queuing. This is because all auto-QoS commnds rely on the same eight queue model after migration,
already generated on first use of the co mmand.
The global templates defined in A and B.
A. Template of application classes used by the au to qos video 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-Policy, we advise that you include that policy in the same template that defines the
application classes used by the comm ands.
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
cts Trust the Q oS marking of Cisco Telepresen ce device.
ip-camera Trust the QoS marking of Cisco video surveillance camera.