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Interface Configuration
The multicast rate determines the rate at which broadcast and multicast packets are transmitted
by the Access Point to the wireless network. Stations that are closer to the Access Point can
receive multicast packets at a faster data rate than stations that are farther away from the AP.
Therefore, you should set the Multicast Rate based on the size of the Access Point's cell.
If the Access Point's cell is very small (for example, Distance Between APs is set to Microcell),
you can expect that all stations should be able to successfully receive multicast packets at 11
MBits/sec so you can set Multicast Rate to 11 Mbits/sec. However, if the Access Point's cell is
large, you need to accommodate stations that may not be able to receive multicast packets at
the higher rates; in this case, you should set Multicast Rate to 1 or 2 Mbits/sec. See
Figure
27.
Figure 27: 1 Mbits/s and 11 Mbits/s Multicast Rates
WDS Configuration
A Wireless Distribution System (WDS) creates a link between two 802.11a, 802.11b, or
802.11b/g APs over their radio interfaces. This link relays traffic from one AP that does not have
Ethernet connectivity to a second AP that has Ethernet connectivity. WDS allows you to
configure up to six (6) point-to-point links between Access Points.
In
Figure
28, AP 1 and AP 2 communicate over a WDS link (represented by the blue line). This
link provides Client 1 with access to network resources even though AP 1 is not directly
connected to the Ethernet network. Packets destined for or sent by the client are relayed
between the Access Points over the WDS link.
Issue 1 September 2004
75
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