3com WX4400 3CRWX440095A 用户手册

Figure 27   QoS on MAPs—Classification and Marking of Packets from WX to 
Clients

The following sections describe in more detail how the WMM QoS mode 
works on WX switches and MAPs.

MAP receives packet
from WX.

Map CoS value to MAP forwarding

0 or 3 -> Background
1 or 2 -> Best Effort
4 or 5 -> Video
6 or 7 -> Voice

Transmit packet to client.

Look up CoS for 
DSCP value and

8 - 15 -> 1

16 - 23 -> 2
24 - 31 -> 3
32 - 39 -> 4
40 - 47 -> 5
48 - 55 -> 6
56 - 63 -> 7

set packet CoS:

Mark 802.11
Service Type
with CoS value.

queue:

0 -  7 -> 0

Yes

No

Static CoS
enabled?

Set packet CoS
with static CoS 
value.