?– The bene?¬?ts of route summarization include smaller routing tables and the ability to isolate
topology changes.
Chapter Summary
The list that follows summarizes the key points that were discussed in this chapter.
?– Routers gather and maintain routing information to enable the transmission and receipt of
packets. Various classes of routing protocols contribute to the different features in each
network. The Routing Information Protocol (RIP), the Enhanced Interior Gateway Routing
Protocol (EIGRP), and the Open Shortest Path First (OSPF) routing protocol each provide
different features and capabilities.
?– A distance vector routing algorithm sends its entire routing table to its neighbors. Link-state
routing algorithms maintain a complex database of topology information, which routers use
to maintain full awareness of distant routers.
?– OSPF is a classless, link-state routing protocol that is widely deployed in many networks.
EIGRP is a classless routing protocol that behaves like a classful routing protocol by default.
?– You can further tune these routing protocols by implementing variable-length subnet masks
(VLSMs) and route summarization.
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