
114060 Rev. A
1-1
Chapter 1
Using Transparent Bridge Services
This chapter contains information on the following topics:
• The transparent bridge, including an overview of the transparent bridge and
details on how the spanning tree algorithm works
• Enabling bridge service and spanning tree on an interface
• Transparent bridge parameters, including information on how to edit the
parameters using Configuration Manager
• Deleting the bridge and spanning tree from the router
Transparent Bridge Overview
Transparent bridges are data-link layer relay devices that connect two or more
networks. They use media access control (MAC) source and destination addresses
to relay frames between connected networks.
The transparent bridge provides three primary services:
• Learns the addresses of endstations on connected networks
• Forwards or drops frames based on knowledge it acquires about endstation
addresses or user-configured filters
• Ensures a loop-free topology throughout the extended network, using the
spanning tree algorithm
Note:
We use the terms
bridge
and
transparent bridge
interchangeably
throughout this chapter.
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