What is RIP protocol in Cisco?
The ip default-network command is configured. • The default-information originate command is configured. • The default route is learned via another routing protocol or static route and then redistributed into RIP. RIP sends updates to the interfaces in the specified networks
What is RIP version 2?
RFC 2453 RIP Version 2 November 1998 In this case, the host or router attempts to send the datagram to a router that is nearer the destination. The goal of a routing protocol is very simple: It is to supply the information that is needed to do routing.
What is rip in CCNA?
Routing Information Protocol (RIP) is a distance-vector routing protocol. RIP sends the complete routing table out to all active interfaces every 30 seconds. RIP only uses hop count (the number of routers) to determine the best way to a remote network.
The Routing Information Protocol (RIP) is one of the oldest distance-vector routing protocols which employ the hop count as a routing metric. RIP prevents routing loops by implementing a limit on the number of hops allowed in a path from source to destination. The maximum number of hops allowed for RIP is 15, which limits the size of networks that RIP can support. A hop count of 16 is considered an infinite distance and the route is considered unreachable. RIP implements the split horizon, route poisoning and holddown mechanisms to prevent incorrect routing information from being propagated.
Originally, each RIP router transmitted full updates every 30 seconds. In the early deployments, routing tables were small enough that the traffic was not significant. As networks grew in size, however, it became evident there could be a massive traffic burst every 30 seconds, even if the routers had been initialized at random times. It was thought, as a result of random initialization, the routing updates would spread out in time, but this was not true in practice. Sally Floyd and Van Jacobson showed in 1994that, without slight randomization of the update timer, the timers synchronized over time.
In most networking environments, RIP is not the preferred choice for routing as its time to converge and scalability are poor compared to EIGRP, OSPF, or IS-IS. However, it is easy to configure, because RIP does not require any parameters unlike other protocols.
RIP uses the User Datagram Protocol (UDP) as its transport protocol, and is assigned the reserved port number 520.
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