From the course: Cisco CCNA (200-301) Cert Prep: 2 IP Connectivity and Services

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Routing protocol basics

Routing protocol basics

From the course: Cisco CCNA (200-301) Cert Prep: 2 IP Connectivity and Services

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Routing protocol basics

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- [Instructor] While the terms routed protocol and routing protocol are often said in close proximity, they are two different things. A routed protocol is something that defines a standard structure for information that would be forwarded by a router. Say for example IPv4 or IPv6. Routing protocols are collections of rules by which routers share information between others, most notably routes. Examples are RIP, OSPF, and BGP. All routing protocols share the same basic functions. First, advertise routing info to neighboring routers sharing in the routing protocol. Second, learn routing information from neighboring routers sharing in the routing protocol. Third, find the best routes among all the learned routing information and install them into the routing table. Fourth, react expeditiously when the network topology changes. Convergence is a term to describe what happens in that fourth step. In essence, convergence is the means by which all routers running the same routing protocol…

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