Configuring the Ethernet Interface 119
7 Select [3] Set Destination Address Filter. The following prompt appears at the
bottom of the screen:
Enter Destination Address Filter (1=Disable, 2=Enable)
8 Enter 2 to enable the destination address filter.
Viewing the List Forwarding Table
The List Forwarding Table is a current forwarding table for the bridge. To display
this table, select [5] Forwarding Table from the Bridge menu. Figure 91 shows a
representative List Forwarding Table.
Figure 91 List Forwarding Table
The List Forwarding Table identifies the port on which a certain MAC address is
located. This can be an Ethernet port or an ATM VC. Using the information in the
List Forwarding table, the bridge knows where to send a MAC address when it
receives one. If the Ethernet port receives a packet, and the destination MAC
address is not in the List Forwarding table, the port broadcasts the packet—sends
it to all Vxs associated with that port.
The List Forwarding Table includes the following columns of information:
MAC Address—The destination MAC address.
Disp.—Disposition:
Bridge—The default disposition.
Flood—Flood the frame on all available VCs.
Filter—Drop this frame.
L_Static—Destination MAC address is in Bridge Static Table.
SRC_Address_Filtering—User-configured source address filter.
DEST_Address_Filtering—User-configured destination address filter.
Location— The port (slot and port number) on which the destination MAC
address is located.
