Nortel Networks 2300 manual Wi-Fi Multimedia, How WMM Works in WSS Software

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Wi-Fi Multimedia

How WMM Works in WSS Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305 Disabling or Reenabling WMM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 308 Displaying WMM Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 309

WSS Software supports Wi-Fi Multimedia (WMM). WMM provides wireless Quality of Service for time-sensitive applications such as voice and video. WMM is a pre-standard version of IEEE 802.11e, provided by the Wi-Fi Alliance to enable vendors to provide interoperable multimedia support before ratification of the standard.

WMM maps priority information between wired and wireless packets, so that high priority traffic receives end-to-end high priority treatment through the network.

WMM is enabled by default and does not require any configuration. You can disable the feature on individual radio profiles.

Note. WSS Software also can support non-WMM VoIP devices. However, to provide priority service to non-WMM VoIP traffic, you must configure an ACL to set the CoS for the traffic. The AP maps this CoS value to a forwarding queue. (For information, see “Enabling Prioritization for Legacy Voice over IP” on page 376.)

How WMM Works in WSS Software

WSS switches support WMM by tagging QoS information in packets. WSS Software classifies QoS information in a packet received by the switch. WSS Software then tags the packet’s QoS information before forwarding the packet. Depending on the destination, WSS Software can set QoS information by setting a packet’s 802.1p value or by setting the IP ToS value in the IP tunnel header, if the traffic is tunneled. WSS Software does not change the IP ToS value in the data packets themselves.

Nortel WLAN Security Switch 2300 Series Configuration Guide