What is router and its types?

Types of Routers. ... Routers capture the information that come through broadband connection via a modem and deliver it to your computer. The router choose route for the packet so that you receive the information Firstly. Routers are multiport devices and more sophisticated as compared to repeaters and bridges.

Firstly we understand the concept of what is broadband connection in communication networks. Broadband is a high-capacity high-speed Data transmission medium. This can be done on a single cable by establishing different bandwidth channels. Broadband technology can be used to transmit voice, data and video over long distances simultaneously.

Routers capture the information that come through broadband connection via a modem and deliver it to your computer. The router choose route for the packet so that you receive the information Firstly. Routers are multiport devices and more sophisticated as compared to repeaters and bridges. Routers also support filtering and encapsulation like bridges.  They operate at physical, data link and network layer of OSI model.

Like bridges, they are self learning, as they can communicate their existence to other devices and can learn of the existence of new routers, nodes and LAN segments.

A router has access to the network layer address or logical address (IP address). It contains a routing table that enables it to make decisions about the route i.e. to determine which of several possible paths between the source and destination is the best for a particular transmission. These routing tables are dynamic and are updated using routing protocols.

The routers receive the packets from one connected network and pass them to a second connected network. However, if a received packet contains the address of a node that is on some other network (of which the router is not a member), the router determines which of its connected networks is the best next relay point for that packet. Once the router has identified the best route for a packet to travel, it passes the packet along the appropriate network to another router. That router checks the destination address, find what it considers the best route for the packet and passes it to the destination network.