RIP

RIP stands for Routing Information Protocol. RIP is a dynamic, distance vector routing protocol and was developed for smaller IP based networks. As mentioned earlier, RIP calculates the best route based on hop count.  There are currently two versions of RIP protocol.  RIPv1 RIPv2 RIPv1: RIP version 1 is among the oldest protocols. Classful Protocol Uses Hop count as metric. Routing Update is- 30 sec Hold Down Period is - 180 sec Limitations of RIPv1: 1. Hop Count Limit: Destination that is more than 15 hops away is considered unreachable by RIPv1. 2. Classful Routing Only: RIP is a classful routing protocol. RIPv1 doesn't support classless routing. RIP v1 advertises all networks it knows as classful networks, so it is not possible to subnet a network using RIP v1.

3. Metric limitation: The best route in RIP is determined by counting the number of hops required to reach the destination. A lower hop count route is always preferred over a higher hop count route. One disadvantage of using hop count as metric is that if there is a route with one additional hop, but with significantly higher bandwidth, the route with smaller bandwidth is taken.

RIPv2:

Instead of using broadcasting it uses multicasting.

Classless Protocol.

Supports VLSM.

Supports authentication.

RIP CONFIGURATION:

Router(config)# router rip

Router(config-router)#network IP-network

Router(config-router)#version 1/2  <-------------------- For specifying version