2-215
Catalyst 2950 and Catalyst 2955 Switch Command Reference
OL-10102-01
Chapter 2 Catalyst 2950 and 2955 Cisco IOS Commands
mls qos map
Table 2-6 shows the default DSCP-to-CoS map:
Command Modes Global configuration
Command History
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.
Note The switches do not support the dscp-mutation, dscp-switch-priority, ip-prec-dscp, and policed-dscp
options.
Examples This 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
This 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
Table 2-6 Default DSCP-to-CoS Map
DSCP Value CoS Value
00
8, 10 1
16, 18 2
24, 26 3
32, 34 4
40, 46 5
48 6
56 7
Release Modification
12.1(6)EA2 This command was introduced.
To Next Page
Loading...
Need help?
General
