Thursday, 15 October 2015

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
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