Lession-3 ROUTER

Router

      A router is a device that determines the next network point to which a packet should be forwarded toward its destination

      Allow different networks to communicate with each other

      A router creates and maintain a table of the available routes and their conditions and uses this information to determine the best route for a given packet.

      A packet will travel through a number of network points with routers before arriving at its destination.

      There can be multiple routes defined. The route with a lower weight/metric will be tried first.

Routing

 

Routing Protocols

      Static Routing

      Dynamic Routing

      IGP (Interior Gateway Protocol): Route data within an Autonomous System

      RIP (Routing Information Protocol)

      RIP-2 (RIP Version 2)

      OSPF (Open Shortest Path First)

      IGRP (Interior Gateway Routing Protocol)

      EIGRP (Enhanced Interior Gateway Routing Protocol)

      IS-IS

      EGP (Exterior Gateway Protocol): Route data between Autonomous Systems

      BGP (Border Gateway Protocol)