Configuring Dscp Maps; Configuring The Cos-To-Dscp Map - Cisco Catalyst 3750 Software Configuration Manual

Chapter 26 Configuring QoS
Switch(config)# interface gigabitethernet1/0/1
Switch(config-if)# service-policy input aggflow1
Switch(config-if)# exit

Configuring DSCP Maps

These sections describe how to configure the DSCP maps:
•
•
•
•
•
All the maps, except the DSCP-to-DSCP-mutation map, are globally defined and are applied to all ports.

Configuring the CoS-to-DSCP Map

You use the CoS-to-DSCP map to map CoS values in inbound packets to a DSCP value that QoS uses
internally to represent the priority of the traffic.
Table 26-12
Table 26-12 Default CoS-to-DSCP Map
CoS value
DSCP value
If these values are not appropriate for your network, you need to modify them.
Beginning in privileged EXEC mode, follow these steps to modify the CoS-to-DSCP map. This
procedure is optional.
Command
Step 1
configure terminal
Step 2
mls qos map cos-dscp dscp1...dscp8
Step 3 end
Step 4
show mls qos maps cos-dscp
Step 5
copy running-config startup-config
To return to the default map, use the no mls qos cos-dscp global configuration command.
78-15870-01
Configuring the CoS-to-DSCP Map, page 26-59
Configuring the IP-Precedence-to-DSCP Map, page 26-60
Configuring the Policed-DSCP Map, page 26-61
not appropriate)
Configuring the DSCP-to-CoS Map, page 26-62
Configuring the DSCP-to-DSCP-Mutation Map, page 26-63
map are not appropriate)
shows the default CoS-to-DSCP map.
0 1
0 8
Purpose
Enter global configuration mode.
Modify the CoS-to-DSCP map.
For dscp1...dscp8, enter eight DSCP values that correspond to CoS values
0 to 7. Separate each DSCP value with a space.
The DSCP range is 0 to 63.
Return to privileged EXEC mode.
Verify your entries.
(Optional) Save your entries in the configuration file.
(optional)
(optional, unless the null settings in the map are
(optional)
2 3 4 5
16 24 32 40
Catalyst 3750 Metro Switch Software Configuration Guide
Configuring Standard QoS
(optional)
(optional, unless the null settings in the
6 7
48 56
26-59