Cisco Cisco Aironet 340 Ethernet Bridges Guia Do Utilizador

The filters are stored in the association table. The display of the multi-
cast filters follows the format of the normal association display. At the 
end of each line the filter action for each address will be displayed. 

This same display may also be produced with the “association display” 
command with either the “all” or “multicast-filters” information. See 
Chapter 10 “Setting Up the Association Table”.

Use the add option to add a multicast filter if there are special multicast 
addresses you want to filter differently than the default. You will first be 
prompted for the address and then for an action to be applied to this 
address only.

Use the remove option to remove one or all of the non-default filters. 
The action for the removed entries will revert to the default action.

If you know that the radio nodes are not going to communicate with 
each other, but will only communicate with nodes on the wired LAN, set 
this parameter to “lan_only”. With this setting multicasts received from 
the radio nodes are not re-broadcast to the radio cell but are forwarded 
to the wired LAN.

For example, if you have a system with a large number of radio clients 
which only talk to the network server, enabling multicast filtering will 
result in much less radio traffic congestion.

If the parameter is left at the default setting of “everywhere”, then radio 
nodes may broadcast to each other.

                       MULTICAST FILTERS

   Address      Device  Type    Parent    Name

------------- --------- ---- ------------ ------------------

N010203040506      Mcst                                      forward