RIP (ROUTING INFORMATION PROTOCOL)

1.   It is a Distance Vector Routing Protocol.

2.   RIP is an Application layer protocol.

3.   It uses UDP port number 520

4.   Administrative Distance is 120.

5.   Metric is number of Hop count.

6.   Maximum number of hops 15.

7.   To select best path, it uses Bellman Ford Algorithm.

8.   It supports equal cost load balancing.

9.   Maximum path supported 32, 4(default).

10.                It shares entire routing table with directly connected routers.

11.                RIP performs routing on rumors.

12.                Sends periodic update once in every 30secs.

13.                RIP has three versions:

·     Default version.

·     RIPV1

·     RIPV2

14.                Default version:

·     By default running.

·     Send V1 type packet & receives V1, V2 type packet.

·     Similar to RIPv1.

15.                RIPV1

·     It is a Classful Routing Protocol.

·     It does not support VLSM, CIDR.

·     To send an update, it uses broadcast address 255.255.255.255

·     No authentication support.

·     Can’t disable auto-summary.

·     No support for manual summary.

·     Send V1 & receive V1 type packet.

16.                RIPV2

·     It is a Classless Routing Protocol.

·     It supports VLSM, CIDR.

·     To send an update, it uses multicast address 224.0.0.9.

·     Can disable auto-summary.

·     Supports manual summary and auto summary.

·     Supports MD5 and plain text authentication.

·     Send V2 & receive V2 type packet.

17.                RIP Timers:

·     Update timer: 30 sec. RIP sends the whole routing table update once every 30 secs.

·     Invalid timer: 180 Sec. How long a router will wait to hear an update before considering the route as invalid.

·     Flush timer: 240 sec. How long a router will wait before removing a route from routing table.

·     Hold-down timer: 180 Sec.

18.                RIP Configuration commands:

·     To  enable RIP on a router for a network:

Router(config)#router rip

Router(config-router)#network a.b.c.d

·     To check entire routing table:

Router#show ip route

·     To check current running routing protocol:

Router#show ip protocols

·     To check route learned from RIP only:

Router#show ip route rip

·     To change administrative distance:

Router(config)#router rip

Router(config-router)#distance 120

·     To change maximum-path:

Router(config)#router rip

Router(config-router)#maximum-paths 4

·     To disable auto-summary:

Router(config)#router rip

Router(config-router)#no auto-summary

·     To make an interface passive (don’t want to send update packet):

Router(config)#router rip

Router(config-router)#passive-interface fa0/1

·     To change timers of rip:

Router(config)#router rip

Router(config-router)#timers basic 30 180 180 240

·     To change version of rip:

Router(config)#router rip

Router(config-router)#version 2

·     To populate information of default route over update packet:

Router(config)#router rip

Router(config-router)#default-information originate

·     To change the version of passing update packet from a particular interface:

Router(config)#interface fastEthernet 0/0

Router(config-if)#ip rip send version1/2

·     To debug rip packets:

Router#debug ip rip events

·     To instantly refresh rip routing table:

Router#clear ip route *

·     To disable rip routing protocol

Router(config)#no router rip