Enterprise QoS Solution Reference Network Design Guide

Catalyst 4500 Supervisor II+/III/IV/V—QoS Considerations and Design
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Example 2-36 Enabling QoS Globally on the Catalyst 4500
CAT4500#show qos
QoS is disabled globally
IP header DSCP rewrite is enabled
CAT4500#conf term
Enter configuration commands, one per line. End with CNTL/Z.
CAT4500(config)#qos
CAT4500(config)#end
CAT4500#
CAT4500#show qos
QoS is enabled globally
IP header DSCP rewrite is enabled
CAT4500#
Catalyst 4500—Trusted Endpoint Model
Configuration
This section includes the following topics:
Configuration
Catalyst 4500 QoS Verification Commands
Enterprise QoS Solution Reference Network Design Guide
Chapter 2 Campus QoS Design
To enable a given Catalyst 4500 interface to trust the DSCP markings of an endpoint, the qos trust dscp
interface command is used as shown below.
Example 2-37 Catalyst 4500—Trusted Endpoint Model Configuration
CAT4500(config)#interface FastEthernet2/1
CAT4500(config-if)# qos trust dscp
CAT4500(config-if)#end
CAT4500#
Catalyst 4500 QoS Verification Commands
Catalyst 4500 QoS verification commands for the Catalyst 4500 Untrusted Endpoint model include the
following:
show qos
show qos interface
Note Since most Catalyst 4500 verification commands are reasonably similar to the MLS QoS verification
commands previously discussed (albeit without the mls keyword), to minimize redundancy MLS QoS
verification commands that have already been detailed are not repeated in this section.
Catalyst 4500—Auto QoS VoIP Model
The Catalyst 4500 supports AutoQoS VoIP with the following keyword options:
Version 3.3