Monday, 1 August 2011

Routing

In Internet Enviornment the word 'Routing' means, To Transfer Data from One side to Another side it's it's done by Layer Three device Router.

  Types of Routing

1.Default Routing
2.Static Routing
3.Dynamic Routing




router is a device that decides where to send a data packet in order to get it one step closer to its destination, and then sends it there.

In order to make this decision, the router looks at the destination address on the packet and then consults a list of rules programmed into the router by the person who set it up.

If there is no explicit rule covering this packet - if the router hasn't been programmed with a rule on how to route packets to this particular destination - then the router send the packet to the default route.

In other words, the default route is the destination that a packet is sent to if the router doesn't have instructions to send it somewhere else.

As an example, consider a simple home router that connects your home network to the Internet. This router will have two routing rules - one for computers on your internal network, and a default route. The default route will send packets upstream to your ISP. So any packet that's not going to another computer at your house will always be sent out to the Internet
ip route 0.0.0.0 0.0.0.0 serial 0/0


Static Route:


 

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