EXP Computer PathBuilder S200 Manuel D’Utilisation

64 

Bridging

Identifying the address links is an important step in configuring MAC Address 
filtering. 

A Source Address link allows a device on the LAN to send frames. A Destination 
Address link allows a device on the LAN to receive frames.

The Incoming Source Address link provides a path for a frame to go from the Token 
Ring to the bridge. The Outgoing Source Address link provides a path for a frame to 
go from the bridge to the WAN.

The Incoming Destination Address link provides a path for a frame to go from the 
WAN to the bridge. The Outgoing Destination Address link provides a path for a 
frame to go from the bridge to the LAN.

Figure 33 shows that link 5 serves as both the Outgoing Source Address link and the 
Incoming Destination Address link. In this example, Outgoing Source Address link 5 
allows the File Server with MAC Address 10:00:5A:00:00:40 (the source) to send 
frames to the WAN via link 5. Incoming Destination Address link 5 allows the File 
Server with MAC Address 10:00:5A:00:00:40 (the destination) to receive frames 
from the WAN via link 5.

Token

Ring 2

MAC Address 10:00:5A:00:00:40

Outgoing Source Address Link (MAC Address 10:00:5A:00:00:40)
Incoming Destination Address Link (MAC Address 10:00:5A:00:00:40)

Bridge

Incoming Source Address Link (MAC Address 10:00:5A:00:00:40)
Outgoing Destination Address Link (MAC Address 10:00:5A:00:00:40)