Router Information Protocol
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RIP (Routing Information Protocol) is a distance vector routing protocol that uses hop count as its routing metric. It sends routing table updates every 30 seconds using UDP port 520 and uses the Bellman-Ford algorithm. RIP has timers that control the update, invalid, flush, and hold down times that impact route propagation. It supports features like split horizon and poison reverse to prevent routing loops.
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Router Information Protocol
- 1. Presented By:- Arvind Singh Tanwar
- 2. RIP is a routing protocol for exchanging routing table information between routers. › Routing updates must be passed between routers so that they can make the proper choice on how to route a packet.
- 3. Distance Vector routing Protocol which employs hop count as routing metric Maximum hop count is 15 A hop count of 16 is considered as unreachable Sends routing table updates in every 30 seconds Administrative Distance is 120 Classful routing protocol Good for small networks Uses bellman ford Algorithm Uses UDP port 250
- 4. Update timer – 30 sec Invalid Timer - 180 sec Flush Time Timer - 240 sec Hold Down Timer – 180 sec
- 5. o Split horizon – Not useful to send information about a route back in the direction from which it came. o Poison Reverse – Updates that are sent to invalidate a route and place it in hold-Down
- 6. Classful routing Does not support VLSM Does not send subnet mask with periodic updates Uses 255.255.255.255 to send periodic updates Does not support authentication Low convergence time Classless routing Support VLSM Sends Subnet mask with periodic update Uses 224.0.0.9 to send the periodic update Supports authentication First convergence time