Cisco NM-8B-U User Guide - Page 201
Usage Guidelines, Examples, Related Commands, Command, Description, mls qos trust cos, mls qos map
UPC - 074632001001
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16- and 36-Port Ethernet Switch Module for Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series mls qos map Usage Guidelines All the maps are globally defined. You apply all maps to all ports. If you enter the mls qos trust cos command, the default CoS-to-DSCP map is applied. If you enter the mls qos trust dscp command, the default DSCP-to-CoS map is applied. After a default map is applied, you can define the CoS-to-DSCP or DSCP-to-CoS map by entering consecutive mls qos map commands. The supported DSCP values are 0, 8, 10, 16, 18, 24, 26, 32, 34, 40, 46, 48, and 56. If the mls qos trust dscp command is entered and a packet with an untrusted DSCP value is at an ingress port, the packet CoS value is set to 0. Examples The following example shows how to define the DSCP-to-CoS map. DSCP values 16, 18, 24, and 26 are mapped to CoS 1. DSCP values 0, 8, and 10 are mapped to CoS 0: Switch# configure terminal Switch(config)# mls qos map dscp-cos 16 18 24 26 to 1 Switch(config)# mls qos map dscp-cos 0 8 10 to 0 The following example shows how to define the CoS-to-DSCP map. CoS values 0 to 7 are mapped to DSCP values 8, 8, 8, 8, 24, 32, 56, and 56: Switch# configure terminal Switch(config)# mls qos map cos-dscp 8 8 8 8 24 32 56 56 You can verify your settings by entering the show mls qos maps privileged EXEC command. Related Commands Command mls qos cos mls qos trust show mls qos maps Description Defines the default CoS value of a port or assigns the default CoS to all incoming packets on the port. Configures the port trust state. Displays QoS mapping information. Cisco IOS Release 12.2(2)XT, 12.2(8)T, and 12.2(15)ZJ 201