Reference Guide

DSCP values TC id Color
52-55 6 Y
56-59 7 G
60-62 7 Y
63 7 R
User–dened DCSP trust map
You can override the default mapping by creating a user dened DSCP trust map. All the unspecied DSCP entries are mapped to the
default trac class ID 0.
Congure user–dened DSCP trust map
1 Create a DSCP trust map.
OS10(config)# trust dscp-map dscp-trust-map
OS10(config-tmap-dscp-map)#
2 Dene the set of dscp values mapped to trac-class(qos-group) ID
OS10(config-tmap-dscp-map)# qos-group 3 dscp 0-15
OS10(config-tmap-dscp-map)# qos-group 5 dscp 16-30
3 Verify the map entries.
OS10# show qos maps type trust-map-dscp dscp-trust-map
DSCP Priority to Traffic-Class Map : dscp-trust-map
Traffic-Class DSCP Priority
-------------------------------
3 0-15
5 16-30
4 Apply the map on a specic interface or on system-qos (global) level.
• Interface level
OS10(conf-if-eth1/1/1)# trust-map dscp dscp-trust-map
• System-qos level
OS10(config-sys-qos)# trust-map dscp dscp-trust-map
Enable trust
You can enable trust on interface level or system level by dening a policy. When you enable trust, the mapping of ows with trac-class
IDs is based on the active trust map on the interface.
The order of precedence is:
1 Interface level map
2 System-qos level map
3 Default map
Congure trust
1 Create a qos type policy-map.
OS10(config)# policy-map trust
2 Refer pre-dened reserved class-map class-trust in the policy-map.
OS10(config-pmap-qos)# class class-trust
562
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