Cisco Catalyst 3750-X Command Reference

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Catalyst 3750-X and 3560-X Switch Command Reference
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Chapter 2 Catalyst 3750-X and 3560-X Switch Cisco IOS Commands
auto qos video
To display the QoS configuration that is automatically generated when auto-QoS is enabled, enable
debugging before you enable auto-QoS. Use the debug auto qos privileged EXEC command to enable
auto-QoS debugging. For more information, see the debug auto qos command.
To disable auto-QoS on a port, use the no auto qos video interface configuration command. Only the
auto-QoS-generated interface configuration commands for this port are removed. If this is the last port
on which auto-QoS is enabled and you enter the no auto qos video command, auto-QoS is considered
disabled even though the auto-QoS-generated global configuration commands remain (to avoid
disrupting traffic on other ports affected by the global configuration). You can use the no mls qos global
configuration command to disable the auto-QoS-generated global configuration commands. With QoS
disabled, there is no concept of trusted or untrusted ports because the packets are not modified (the CoS,
DSCP, and IP precedence values in the packet are not changed). Traffic is switched in pass-through mode
(packets are switched without any rewrites and classified as best effort without any policing).
Examples This example shows how to enable auto-QoS for a Cisco Telepresence interface with conditional trust.
The interface is trusted only if a Cisco Telepresence device is detected; otherwise, the port is untrusted.
Switch(config)# interface gigabitethernet2/0/1
Switch(config-if)# auto qos video cts
You can verify your settings by entering the show auto qos video interface interface-id privileged
EXEC command.
Related Commands Command Description
debug auto qos Enables debugging of the auto-QoS feature.
mls qos trust Configures the port trust state.
srr-queue bandwidth share Assigns the shared weights and enables bandwidth sharing
on the four egress queues mapped to a port.
queue-set Maps a port to a queue-set.
show auto qos Displays auto-QoS information.
show mls qos interface Displays QoS information at the port level.

Cisco Catalyst 3750-X Specifications

General

Switching Capacity	160 Gbps
Stacking Bandwidth	64 Gbps
Max Stacking Units	9
Layer Support	Layer 2 and Layer 3
Form Factor	Rack-mountable
DRAM	256 MB
Flash Memory	64 MB
Model	Cisco Catalyst 3750-X Series
Ports	24 or 48 10/100/1000 Ethernet ports
Uplink Interfaces	4 SFP or 2 SFP+
Features	StackWise Plus, EnergyWise
Image	IP Base or IP Services
Operating Temperature	0 to 40°C
Operating Humidity	10 to 85% noncondensing