RIP (Routing Information Protocols)

Basic Notes:

*It’s a Distance Vector Protocol, so it send full routing table to it’s neighbors,
*RIP administrative distance is 120,
*RIP use the UDP 520,
*RIP use the “Bellaman-fard algoritham” to find the best path to destination,
*RIP use the hop count as a Matrics
*RIP max hop count is 15, above of it RIP consider as a unreachable,
*RIP send routing updates every 30sec
*RIP will be make load balancing b/w multiple paths (Max 4 paths),
*RIP default Auto-summary enabled,
*It useful for small office’s,

RIP Versions,

Version1==>It’s a classfull and it’s send the routing updates to broadcast address
Version2==> it’s supports the classless IP address and it’s send the updates to multicast address and also support hash MD5 authentication.

All Cisco Routers default have the RIP version1


Router(Config)#Router rip
Router(Config-Router)#version 1 (for Version1)
Router(Config-Router)#version 2 (For Version2)

Syntax of RIP:

Router(Config)#Router rip
Router(Config-Router)#version 2
Router(Config-Router)#no auto-summary

RIP loop avoid mechanism :

  1. Split-Horizon:- Prevent the routing updates sent through the same interface it received. This mechanism default enabled in Cisco.
  2. Route- Poising:- This mechanism trigger the automatic update of failed network without waiting for the regular update timer expire. this type update sent to all interface with the infinity matrics.
  3. Hold-Down Timers:- It will prevent the RIP from accepting the any updates for router in hold-down state, until the hold-down timer expire.

Basic RIP Config watch here…


One thought on “RIP (Routing Information Protocols)

  1. […] in this configure Routers Routing table maintained by the Dynamic Routing protocols them-self. these are select the best route to the destination and also make load balance between links. And any link or router goes down the routing protocol will redirect or find the other route for the destination(if available). no need of Network admin to interfere to change the route. In this type the Router CPU, ROM and bandwidth of link consumption will be more. Some example of the Dynamic Routing Protocols are RIP, OSPF, EIGRP etc… […]


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