Enterprise QoS Solution Reference Network Design Guide

Chapter 2 Campus QoS Design
Catalyst MLS QoS Verification Commands
Version 3.3
Catalyst 2970/3560/3750—QoS Considerations and Design
Catalyst MLS QoS verification commands for the Untrusted Multi-Application Server model include the
following:
show mls qos
show mls qos map
show mls qos interface
show mls qos interface policers
show class-map
show policy-map
show policy interface
Catalyst 2970/3560/3750—Conditionally-Trusted IP Phone + PC with
Scavenger-Class QoS (Basic) Model
Configuration
This section includes the following topics:
Configuration
Catalyst MLS QoS Verification Commands
At the time of writing, the Catalyst 2970/3560/3750 does not fully support per-port/per-VLAN policing
due to hardware restrictions. Therefore, access lists are required to match voice and signaling traffic
sourced from the VVLAN. These ACLs require the administrator to specify the VVLAN subnet
information. The configuration for a Conditionally-Trusted IP Phone and PC (Basic Model) for a
Catalyst 2970/3560/3750 is shown below.
Example 2-30 Catalyst 2970/3560/3750—Conditionally-Trusted IP Phone + PC + Scavenger (Basic)
Model Configuration
CAT2970(config)#mls qos map cos-dscp 0 8 16 24 32 46 48 56
! Modifies CoS-to-DSCP mapping to map CoS 5 to DSCP EF
CAT2970(config)#mls qos map policed-dscp 0 24 to 8
! Excess VVLAN & DVLAN traffic will be remarked to Scavenger (CS1)
CAT2970(config)#
CAT2970(config)#
CAT2970(config)#class-map match-all VVLAN-VOICE
CAT2970(config-cmap)# match access-group name VVLAN-VOICE
CAT2970(config-cmap)#
CAT2970(config-cmap)#class-map match-all VVLAN-CALL-SIGNALING
CAT2970(config-cmap)# match access-group name VVLAN-CALL-SIGNALING
CAT2970(config-cmap)#
CAT2970(config-cmap)#class-map match-all VVLAN-ANY
CAT2970(config-cmap)# match access-group name VVLAN-ANY
CAT2970(config-cmap)#
CAT2970(config-cmap)#
CAT2970(config-cmap)#policy-map IPPHONE+PC-BASIC
CAT2970(config-pmap)#class VVLAN-VOICE
CAT2970(config-pmap-c)# set ip dscp 46 ! DSCP EF (Voice)
CAT2970(config-pmap-c)# police 128000 8000 exceed-action drop
Enterprise QoS Solution Reference Network Design Guide
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