| 6.2 |  | Dynamic Routing Overview |
| 6.2.1 |  | Introduction to routing protocols |

| Routing protocols are different from routed protocols in both function and task. A routing protocol is the communication used between routers. A routing protocol allows one router to share information with other routers regarding the networks it knows about as well as its proximity to other routers. The information a router gets from another router, using a routing protocol, is used to build and maintain a routing table. Examples of routing protocols are: Routing Information Protocol (RIP) Interior Gateway Routing Protocol (IGRP) Enhanced Interior Gateway Routing Protocol (EIGRP) Open Shortest Path First (OSPF) A routed protocol is used to direct user traffic. A routed protocol provides enough information in its network layer address to allow a packet to be forwarded from one host to another based on the addressing scheme. Examples of routed protocols are: Internet Protocol (IP) Internetwork Packet Exchange (IPX)
| Web Links Introduction to Routing http://www.cisco.com/ networkers/ nw99_pres/301.pdf