REMOTE BRIDGES
In many situations, it is not possible for LANs to interwork directly with bridges between LANs. Since many enterprises are widely distributed, the LANs must often be connected with wide area communications links. See Figure 4-24. These links connect LAN bridges as a point-to-point topology. Such a connection is called remote bridging. Some vendors, such as AppleTalk, refer to the bridges as half bridges in the sense that two bridges and the link are considered to be a single bridge.
Figure 4-24. Remote Bridges
Spanning tree operations can be applied to remote bridges. The point-to-point link is considered to be part of the spanning ...
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