Dell 53-1002116-01 manual Multicast traffic, Mapping CoS-to-Traffic-Class

10 Queueing

TABLE 18	Default user priority for unicast traffic class mapping (Continued)
User priority	Traffic class
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 queueing incurred on the ingress and the egress ports.

Multicast traffic

Fabric OS v6.3.1_cee supports four 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 priority. The traffic class mapping stage provides some flexibility in queue selection.

Table 19 presents the Layer 2 default traffic class mapping supported for a COS-based user priority to conform to 802.1Q default mapping.

TABLE 19	Default user priority for multicast traffic class mapping
User Priority	Traffic class
0	0
1	1
2	2
3	3
4	4
5	5
6	6
7	7

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

To map a CoS-to-Traffic-Class, perform the following steps from Privileged EXEC mode. 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

98	Dell Converged Enhanced Ethernet Administrator’s Guide
	53-1002116-01