Routing Protocols

Routing Protocols:

Routing Protocols helps us to determine how your data gets to its destination and helps to make that routing process as smooth as possible. Below are the most important protocols.

RIP:
Routing Information Protocol is the distance vector protocol. It is used both in LAN and WAN. Rip determines the network paths based on the IP destination and the hop count of the journey. RIP broadcasts the routing information to others after every 30 seconds so that the other routers update their routing information.

OSPF:
Open Shorted First Protocol is the link state protocol based on the shortest path first algorithm. The SPF routing algorithm used to calculate the shortest path spanning-tree to ensure efficient data transmission of packets. OSPF routers maintain databases detailing information about the surrounding topology of the network. This database is filled with data taken from Link State Advertisements sent by other routers. It also uses the Dijkstra algorithm to recalculate network paths when the topology changes. IF topology changes then OSPF recalculates the path to route the traffic.

BGP:
Broader Gateway Protocol is the routing protocol that is based on distance path vector protocol. BGP uses the Best Path Selection Algorithm to select the best path for routing. If the custom setting is not configured then it will select the route based on the shortest path to the destination. BGP only sends updated routing table information when some change happens. 

EIGRP:
Enhanced Interior Gateway Protocol is the hybrid protocol which has characteristics of distance vector and link state both. This protocol is developed by Cisco and only used on Cisco routers. It supports hope count of 100 and advertises the routing table after every 90 seconds. It also supports the facility of load balancers.

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