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An in-depth explanation of the spanning tree protocol (stp) used in bridges and switches to prevent loops in lan networks. Learn about the features, benefits, and limitations of bridges, the differences between bridges and routers, and the importance of using stp to create a loop-free network topology. Discover the process of electing root bridges and designated bridges, as well as the role of configuration messages and port states in maintaining a stable network.
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Bridge/switch
Router
Same subnet
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The bridge concludes that Q and A are on the same segment, therefore the Q to A packet can be discarded. 8- 16
Bridge B1 cannot distinguish between hosts that are on LAN 2 and LAN 3 because B2 connect LAN 2 and LAN 3 transparently.
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From B1’s point of view, the network topology looks like this. 8- 19
From B2’s point of view, the network topology looks like this.
The learning bridge concept works for any tree topology! 8- 20