3Com 3C63311 Reference Guide - Page 131

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.