Overview of IP routing

- IP routing is basically the process…of moving packets from one network to another…using routers.…It's essential to networking because…it pertains to all routers…and configurations that use it.…And by routers, I mean Cisco routers, of course.…The term router and layer 3 device…are practically interchangeable.…So, throughout this video when I use the term router,…I'm referring to any layer 3 device.…Before jumping into this further,…I want to explain the difference between…a routing protocol,…and a routed protocol.…

Routers use routing protocols to…dynamically find all networks within…the greater internetwork,…and to ensure that all routers have the same…routing table…which is a map of the internetwork.…Routing protocols are also employed…to determine the best path a packet…should take through an internetwork…to get to its destination most efficiently.…RIPv2, EIGRP, and OSPF are great examples…of the most common routing protocols.…Once all routers know about all networks,…a routed protocol can then be used to send…