Routing :- Routing :- Routing is used for taking a packet from one device and sending it through the network to another device on a different network. The logical network address of the destination host is used to get packets to a network through a routed network, then the hardware address of the host is used to deliver the packet from a router to the correct destination host.

To be able to route packets, a router must know, at a minimum, the following:

 ·  Destination address

·   Neighbour routers from which it can learn about remote networks 

· Possible routes to all remote networks

· The best route to each remote network

 · How to maintain and verify routing information

The router builds a routing table that describes how to find the remote networks. If a network

is directly connected, then the router already knows how to get to it. If a network isn’t

Connected, the router must learn how to get to the remote network in two ways: by using static

Routing, meaning that someone must hand-type all network locations into the routing table, or

Through something called dynamic routing.

 

The router builds a routing table that describes how to find the remote networks. If a network

is directly connected, then the router already knows how to get to it. If a network isn’t

Connected, the router must learn how to get to the remote network in two ways: by using static

Routing, meaning that someone must hand-type all network locations into the routing table, or

Through something called dynamic routing.

There are three types of routing

1.       Static

2.       Default

3.       Dynamic