Brocade Communications Systems Understanding Brocade Maps for CoS-to-Traffic-Class Configuration

Queueing 9

Once the traffic class mapping has been resolved for ingress traffic, it is applied consistently across all queueing incurred on the ingress and egress ports.

Mapping CoS-to-Traffic-Class

Perform the following steps from Privileged EXEC mode to map a CoS-to-Traffic-Class. 1. Enter global configuration mode.

switch#configure terminal

2. Create the CoS-Traffic-Class mapping by specifying a name and the mapping.

switch(config)#qos map cos-traffic-class test 1 0 2 3 4 5 6 7

Example of creating CoS-to-Traffic-Class QoS map to map CoS 0 (best effort) to Traffic Class 1 and CoS 1 to below best effort Traffic Class 0, all other CoS go through unchanged. This mapping matches the default behavior recommended in IEEE 802.1Q for systems supporting 8 Traffic Classes.

switch:admin>cmsh switch>enable switch#configure terminal

Enter configuration commands, one per line. End with CNTL/Z.

switch(config)#qos map cos-traffic-class test 1 0 2 3 4 5 6 7 switch(config)#end

switch#

3. Enter the copy command to save the running-config file to the startup-config file.

switch#copy running-config startup-config

Activating a mapping CoS-to-Traffic-Class

Perform the following steps from Privileged EXEC mode to activate a CoS-to-traffic class mapping. 1. Enter global configuration mode.

switch#configure terminal

2. Specify the 10-gigabit Ethernet interface.

Example of selecting the 10-Gigabit Ethernet interface port 0/2.

switch(config)#interface tengigabitethernet 0/2

3. Activate the CoS-to-Traffic-Class mapping by name.

switch(conf-if-te-0/2)#qos cos-traffic-class test

Example of activating the CoS-to-Traffic-Class QoS map on an interface.

switch:admin>cmsh switch>enable switch#configure terminal

Enter configuration commands, one per line. End with CNTL/Z. switch(config)#interface tengigabitethernet 0/2 switch(conf-if-te-0/2)#qoscos-traffic-class test switch(conf-if-te-0/2)#exit

switch(config)#end

switch#

4. Enter the copy command to save the running-config file to the startup-config file.

switch#copy running-config startup-config

Converged Enhanced Ethernet Administrator’s Guide	97
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