Brocade Network OS Administrator’s Guide v4.1.1 - Manual (Page 495)

Default user priority for unicast traffic class mapping TABLE 85
User priority Traffic class
0 1
1 0
2 2
3 3
4 4
5 5
6 6
7 7
You are allowed to override these default traffic class mappings per port. Once the traffic class mapping
has been resolved, it is applied consistently across any queuing incurred on the ingress and the egress
ports.
The Brocade switch supports eight multicast traffic classes for isolation and to control servicing for
different priorities of application data. Traffic classes are numbered from 0 through 7, with higher values
designating higher priorities. The traffic class mapping stage provides some flexibility in queue
selection.
The following table displays the Layer 2 default traffic multicast class mapping supported for a CoS-
based user priority to conform to 802.1Q default mapping.
Default user priority for multicast traffic class mapping TABLE 86
User Priority Traffic class
0 1
1 0
2 2
3 3
4 4
5 5
6 6
7 7
Once the traffic class mapping has been resolved for inbound traffic, it is applied consistently across all
queuing incurred on the ingress and egress ports.
You can configure an interface with either a CoS-to-traffic class-map or a DSCP-to-traffic class-map.
Configuring QoS
Network OS Administrator’s Guide 495
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