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DWS-1008 User’s Manual
D-Link Systems, Inc.
Wi-Fi Multimedia
QoS on a DWL-8220AP
DWL-8220AP access points use forwarding queues to prioritize traffic to wireless clients.
When the AP receives a packet from a DWS-1008 switch, the AP places the packet into one
of four forwarding queues. The AP’s queue selection is based on the IP ToS setting in the
tunnel header of the encapsulated data packet received from the switch. The AP has the
following forwarding queues, listed from lowest priority to highest priority:
•
Background
•
Best effort
•
Video
•
Voice
The table below shows how WMM priority information is mapped across the network. When
WMM is enabled in MSS, D-Link switches and APs perform these mappings automatically.
WMM Priority Mappings
IP
Precedence IP ToS
DSCP 802.1p CoS
AP
Forwarding
Queue
0
0
0
0
0
0
3
3
0x60
24
3
3
1
1
0x20
8
1
1
Best Effort
2
2
0x40
16
2
2
4
4
0x80
32
4
4
Video
5
5
0xa0
40
5
5
6
6
0xc0
48
6
6
Voice
7
7
0xe0
56
7
7
Disabling or Reenabling WMM
WMM is enabled by default on all radio profiles. To disable the feature on a radio profile,
use the following command:
set radio-profile
name
wmm
{
enable
|
disable
}
When WMM is disabled, AP forwarding prioritization is optimized for SVP instead of WMM,
and the AP does not tag packets it sends to the switch.
If you plan to use SVP or another non-WMM type of prioritization, you must configure ACLs
to tag the packets.
Displaying WMM Information
You can display the WMM state for a radio profile. You also can display statistics for AP
forwarding queues.
Summary of Contents for DWS-1008
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