6381-A4 Router Users Guide
105
WLAN QoS Support
The WLAN QoS is supported; however, it is hard-coded and is not configurable on the Ingress
and Egress pages.
User Priority
Class of Service
WME Priority
DSCP Map
0 (Best-Effort)
CoS5
0
0 (0x0)
1 (Background)
CoS6
1
8 (0x20)
2 (Background)
CoS6
2
16 (0x40)
3 (Best-Effort)
CoS5
3
24 (0x60)
4 (Video)
CoS2
4
32 (0x80)
5 (Video)
CoS2
5
40 (0xA0)
6 (Voice)
CoS1
6
48 (0xC0)
7 (Voice)
CoS1
7
56 (0xE0)
There is no shaper support on WLAN interface.
Shaper
The shaper provides a way of determining priorities of different traffic classes. Three shaper
algorithms are supported: HTB (hierarchical token bucket), Low Latency Queue Discipline, and
PRIOWRR (priority based round robin).
HTB
Shapes the traffic of a class over the specific interface. All CoSx (where x= 1 to 6) is
assigned a specific rate that data will be shaped to meet; for example, if CoS1 is
100Kbps even 300Kbps of data is received on the interface only 100Kbps will be
sent. Of the
Max Rate
entered rates for each CoS channel may be configured. If
Max Rate is 300Kbps,
Cos1
is configured for 100Kbps,
CoS2
and
CoS3
are
configured for 150Kbps each and CoS6 for 300Kbps. CoS6 can use the whole
300Kbps of bandwidth only when there are no CoS1, CoS2, or CoS3 packets.
Low Latency
CoS1 is not rate limited, so the
CoS1
field is disable when
Low Latency Queue
Discipline
is checked. CoS1 takes priority (much as if CoS1 was set to
Max Rate
) If