Brocade Converged Enhanced Ethernet Administrator's Guide v6.1.2_cee (53-1001258-01, June 2009)

Converged Enhanced Ethernet Administrator’s Guide 109
53-1001258-01
Queueing
8
Table 19 presents the Layer 2 default traffic class mapping supported for a COS-based user priority
to conform to 802.1Q default mapping.
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
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)#exit
switch#
Activating a mapping CoS to traffic class
TABLE 19 Default user priority to traffic class mapping
User Priority Traffic class
00
10
21
31
42
52
63
73
Step Task Command
1 Enter global configuration mode.
switch#configure terminal
2 Create the CoS-Traffic-Class mapping
specifying a name and the mapping.
switch(config)#qos map
cos-traffic-class test 1 0 2 3 4 5 6 7
Step Task Command
1 Enter global configuration mode.
switch#configure terminal
2 Specify the 10-gigabit Ethernet interface. In
this example, 0/2 is used.
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