cisco learning

RIP

RIP is the oldest of the distance vector routing protocols. Although RIP lacks the sophistication of more advanced routing protocols, its simplicity and continued widespread use is a testament to its longevity. RIP is not a protocol "on the way out." In fact, an IPv6 form of RIP called RIPng (next generation) is now available.

RIP Characteristics :
- RIP is a distance vector routing protocol.
- RIP uses hop count as its only metric for path selection.
- Advertised routes with hop counts greater than 15 are unreachable.
- Messages are broadcast every 30 seconds.


To enter the router configuration mode for RIP, enter router rip at the global configuration prompt. Notice that the prompt changes from a global configuration prompt to the following:

- R1(config-router)#

This command does not directly start the RIP process. Instead, it provides access to configure routing protocol settings. No routing updates are sent.
To enable RIP routing for a network, use the network command in the router configuration mode and enter the classful network address for each directly connected network.

- Router(config-router)#network directly-connected-classful-network-address

The network command:
- Enables RIP on all interfaces that belong to a specific network. Associated interfaces will now both send and receive RIP updates.
- Advertises the specified network in RIP routing updates sent to other routers every 30 seconds.
To enable RIP routing for a network, use the network command in the router configuration mode and enter the classful network address for each directly connected network.

- Router(config-router)#network directly-connected-classful-network-address

Command for RIP configurations
Example :
- Router(config)#router rip
- Router(config-router)#network 192.168.17.0
- Router(config-router)#network 192.168.18.0

Use the version 2 command to enable RIP version 2
- Router(config)#router rip
- Router(config-router)#version 2