Layer-2 bridging vs. Layer-3 routing? (Compare their forward mechanisms, management, and scalability.)  Answer:  Bridging: by flooding or tables of self learning; plugand-play; limited to thousands....

Layer-2 bridging vs. Layer-3 routing? (Compare their forward mechanisms, management, and scalability.)

 Answer:

 Bridging: by flooding or tables of self learning; plugand-play; limited to thousands.

 Routing: by tables of global or local information; configuration required; scalable.

Layer-2 bridging on a large campus network? Why not?

 Answer:

 Each bridging switch on the campus needs to learn and memorize all hosts on the campus, which requires a large table. Meanwhile, frequent flooding would happen when not all hosts are learned.