Routing Protocol
The router can recognise other routers on the network and decide on a dynamic basis where to deliver all network messages through the routing protocol. Several protocols exist, some of which are listed below:
- Open Shortest Path First: As packets travel across several networks, it is utilised to determine the optimal path for them to take in order to arrive at their destination.
- Border Gateway Protocol (BGP): It facilitates information sharing between edge routers to control internet packet routing. For routers, it offers network stability. It can easily switch to another network connection to transfer the packets.
- Interior Gateway Routing Protocol (IGRP) : IGRP outlines the protocol for exchanging routing data between gateways inside the separate networks. The routing information can then be used by the other network protocols to decide how data packets should be routed.
- Enhanced Interior Gateway Routing Protocol (EIGRP): This protocol requests a router to route its neighbours if it cannot find a path to a destination from the routing tables. The neighbours then forward the request to further neighbours until a router finds the path.
- Exterior Gateway Protocol (EGP): It is also frequently used for the communication of routing table data between internet hosts.
You can also refer the article Difference between Router and Modem.
Introduction of a Router
Network devices are physical devices that allow hardware on a computer network to communicate and interact with one another. For example Repeater, Hub, Bridge, Switch, Routers, Gateway, Router, and NIC, etc.