Auto Qos Video - Cisco Catalyst 4500 Series Command Reference Manual

auto qos video

auto qos video
To generate QOS configuration for cisco-telepresence or cisco-camera interfaces (conditional trust
through CDP), use the auto qos video interface configuration command.
Syntax Description cts
ip-camera
Defaults This command has no default settings.
Command Modes Interface configuration mode
Command History Release
15.1(1)SG,
15.1(1)SG IOS-XE 3.3.0
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 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.) Furthermore, eight egress-queue class-maps are generated, which match the qos-groups
set in the input policy. The actual egress output policy assigns a queue to each of the eight egress-queue
class-maps.
The srnd4 commsands generate the templates only as needed. For example, on first use of the 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 commnds rely on the same eight queue model after migration,
already generated on first use of the command.
The global templates defined in A and B.
A. Template of application classes used by the auto 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. Because these three commands are the only ones that 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 commands.
Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.4.0SG and IOS 15.1(2)SG)
2-60
auto qos video {cts | ip-camera}
Trust the QoS marking of Cisco Telepresence device.
Trust the QoS marking of Cisco video surveillance camera.
Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
Modification
Support for this command was introduced on the Catalyst 4500 series
switch.
OL-27596 -01