Identifying Address Links For Mac Addressing - 3Com PathBuilder S200 Series Owner's Manual

Bridge Filtering

Identifying Address Links for MAC Addressing

Why it is Important Identifying the address links is an important step in configuring MAC Address
Example of
Address Links
64
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.
Outgoing Source Address Link (MAC Address 10:00:5A:00:00:40)
Incoming Destination Address Link (MAC Address 10:00:5A:00:00:40)
Incoming Source Address Link (MAC Address 10:00:5A:00:00:40)
Outgoing Destination Address Link (MAC Address 10:00:5A:00:00:40)
5
WAN
Bridge
6
Node 100
Figure 33. Example of Address Links
Token
1
LAN
Ring 2
File Server
MAC Address 10:00:5A:00:00:40
Bridging