Routing in Networking

 

What is Routing in Networking?

Ans. First we all need to know that whenever we want to send data from one network to another network. We need router to achieve this. Router help us to send data from one network to another.

There can be many paths to send data from one network to another, but router choose optimal path to deliver the packet from one network to another.

This process of choosing best path (Optimal path) for packet delivery is called Routing.

Routing is performed by network layer (Layer 3)

 

There are three types of routing                                                                                                                                                                                                                                     

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

1)Static Routing: -

·        Static routing is configured by administrator manually. Administrator add routes in routing table manually. In this type of routing administrator decides the best rout that will be used for packet delivery by the router. Suppose if there are four routes A, B, C and D. If it is configured to go via B by administrator, it always will go via B. If it is configured to go via C and D, it always will go via C and D.

·        It is Fast and secure because it is configured by the administrator itself.

·        Used for small organization. That has a network of 10-15 Routers.

      Disadvantages of Static Routing: -

•        Used for small network
•       Everything to manually
•      Network changes affect complete network.