Network Card User Manual

C LASS OF S ERVICE C ONFIGURATION
2-65
Mapping Priority Classes to Egress Queues
This switch supports Class of Service by using four priority queues, with
Weighted Round Robin Queuing for each port. Eight traffic classes are
defined in IEEE 802.1p. The default priority levels are assigned according
to recommendations in the IEEE 802.1p standard as shown in the
following table
.
The priority levels recommended in the IEEE 802.1p standard for various
network applications are shown in the following table. However, you can
map the priority levels to the switch’s output queues in any way that
benefits application traffic for your own network.
Note that the mapping of CoS priorities to switch output queues for any
single port then applies to all ports on the switch.
Priority Queue
01
10
20
31
42
52
63
73
Priority Level Traffic Type
0 (default) Best Effort
1Background
2(Spare)
3 Excellent Effort
4 Controlled Load
5 Video, less than 100 milliseconds
latency and jitter
6 Voice, less than 10 milliseconds latency
and jitter
7 Network Control