Bridges vs Routers

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mileloader

Question subject: Bridges vs Routers

Posted: Wed Nov 26, 2008 10:19 pm

Joined: Sun May 25, 2008 5:34 pm
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Quote:

* both store-and-forward devices
- routers: network layer devices (examine network layer headers)
- bridges are Link Layer devices
* routers maintain routing tables, implement routing algorithms

*bridges maintain filtering tables, implement filtering, learning and spanning tree algorithms .

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File comment: image show the difference between the bridge and router.

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+ Bridge operation is simpler requiring less processing .
- Topologies are restricted with bridges: a spanning tree must be built to avoid cycles .
- Bridges do not offer protection from broadcast storms (endless broadcasting by a host will be forwarded by a bridge) .

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