Comparison of dynamic routing protocols
Each dynamic routing protocol was designed to meet a specific routing need. Each protocol does some things well, and other things not so well. For this reason, choosing the right dynamic routing protocol for your situation is not an easy task.
Features of dynamic routing protocols
Each protocol is better suited for some situations over others.
Choosing the best dynamic routing protocol depends on the size of your network, speed of convergence required, the level of network maintenance resources available, what protocols the networks you connect to are using, and so on. For more information on these dynamic routing protocols, see Routing Information Protocol (RIP) on page 300, Border Gateway Protocol (BGP) on page 338, Open Shortest Path First (OSPF) on page 377, and Intermediate System to Intermediate System Protocol(IS-IS) on page 419.
Comparing RIP, BGP, and OSPF dynamic routing protocols
Protocol RIP BGP OSPF / IS-IS
Routing algorithm Distance Vector, basic Distance Vector, advanced
Common uses Small non-complex net- works
Network backbone, ties multinational offices together
Common in large, com- plex enterprise networks
Strengths Fast and simple to imple- ment
Near universal support
Good when no redund- ant paths
Only needed on border routers
Little management over- head
No hop count limitation
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