What is Router and Router Network ?

 ROUTER : 

Router is the Foremost function of a network layer.

Routing is defined as the decision made for establishing a path from Source to Destination. 

Routing Decisions are made by routing algorithm, Which are in numbers.

Depends on the user to choose, one of them, which best suits his purpose.

Every Router Must have It's Unique ID To send and Receive data from other Computer or Network.

Create a Root from Source to Destination.

For Example, Multiple Systems have Only One Printer then it must be necessary to do work on first come first serve basis.

                                                            Fig. Router Working.

Routing can be classified as follows : 

(1). Static Or Non-adaptive Routing : In this routing, the path from source to destination to decides and  freezed. Every packet for the full session will have to follow this path

Every Packet for the full session will have to follow this path.

If some obstruction aries then packet will be hold up in the path but no other routing path will be follow.

(2). Dynamic Or Adaptive Routing : In this type of routing is a flexible where the total route is not pre decided, rather every IMP decides separately for every packet which path is to take to proceed further.g

In this type of routing, decisions are taken on the basis of Topology, congestion, traffic and other parameters.Since the Routing is adapted to present conditions.

ROUTER NETWORK : 

Routing Network is the limitations of a router to his network. Network area are Reliable.

It's Not Easy to define Router Network. Router Network Must be depends On the User Needs.

Static Router are used for the local area while Dynamic area was big as a city or even a Country.

It's Used in both level for Data Transfer. But used only by the User who Need high Level security Every Time or Every Day For their Work.Its Installation Coast is also high.