10.2 | IP Routing Protocols | |||
10.2.3 | Routed versus routing |
Protocols used at the network layer that
transfer data from one host to another across a router are called
routed or routable protocols. Routed protocols transport
data across a network. Routing protocols allow routers to choose the
best path for data from source to destination.
A routed protocol functions include the following:
The Internet Protocol (IP) and Novell's Internetwork Packet Exchange (IPX) are examples of routed protocols. Other examples include DECnet, AppleTalk, Banyan VINES, and Xerox Network Systems (XNS). Routers use routing protocols to exchange routing tables and share routing information. In other words, routing protocols enable routers to route routed protocols. A routing protocol functions includes the following:
Examples of routing protocols that support the IP routed protocol include the Routing Information Protocol (RIP), Interior Gateway Routing Protocol (IGRP), Open Shortest Path First (OSPF), Border Gateway Protocol (BGP), and Enhanced IGRP (EIGRP).
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