354 Configuring quality of service
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An AP uses the DSCP-to-CoS and CoS-to-DSCP mappings of the WSS that is managing it. If you change mappings on
a WSS, the change also applies to the AP. Likewise, if an AP changes to another WSS (for example, after an AP restart),
the AP uses the mappings in effect on the new WSS.
Table 5 lists the default mappings between an AP’s internal CoS values and its forwarding queues.
(To display an AP’s CoS mappings and queue usage statistics, see “Displaying AP forwarding queue statistics”
(page 364).)
Figure 5 shows an example of end-to-end QoS in a Nortel network. In this example, voice traffic is prioritized based on
WMM. This example assumes that the QoS mappings are set to their default values.
Table 5.Default
CoS-to-AP-forwarding-queue mappings
CoS
AP Forwarding
Queue
1 or 2 Background
0 or 3 Best Effort
4 or 5 Video
6 or 7 Voice