SMC Networks SMC6724L3 manual Mapping Layer 3/4 Priorities to CoS Values, 125

CLASS OF SERVICE CONFIGURATION

Web – Click Priority, Queue Scheduling. Select a traffic class (i.e., output queue), enter a weight, then click Apply.

CLI – The following example shows how to assign WRR weights of 16, 64, 128 and 240 to the CoS priority queues 0, 1, 2 and 3.

Console(config)#queue bandwidth 16 64 128 240		4-183
Console(config)#exit
Console#show queue bandwidth		4-185
Queue ID Weight
-------- ------
0	16
1	64
2	128
3	240
Console#

Mapping Layer 3/4 Priorities to CoS Values

This switch supports several common methods of prioritizing layer 3/4 traffic to meet application requirements. Traffic priorities can be specified in the IP header of a frame, using the priority bits in the Type of Service (ToS) octet or the number of the TCP port. If priority bits are used, the ToS octet may contain three bits for IP Precedence or six bits for Differentiated Services Code Point (DSCP) service. When these services are enabled, the priorities are mapped to a Class of Service value by the switch, and the traffic then sent to the corresponding output queue.

3-125