Router is a network device that forwards data packets between computer networks and performs the function of directing traffic on the Internet. Data sent over the internet, such as web pages or email, is in the form of packets of data. A packet is usually forwarded from one another through a network which is an internetwork until it reaches its destination node.

Router Serves As A Link Between Two Or More Networks To Forward Data From One Network To Another. A router is different from a switch. The Switch Is A Liaison Of Several Tools To Form A Local Area Network (LAN).

As an illustration of the difference in function and the switch is a road, and is a link between roads.

Each House Is On A Street That Has An Address In A Certain Order.

In the same way, the switch connects a variety of devices, where each device has its own IP address on a LAN

router. It is very widely used in networks based on TCP / IP protocol technology, and this type is also called the IP router.

In addition, there is AppleTalk, and there are several other types.

The Internet Is A Prime Example Of A Network That Has Many IP Routers.

Connect to two or more data lines from different IP networks, and when a data packet enters on one of the lines, it will read the network address information in the packet header to determine its final destination. Then, using the information in the routing table or routing policy, it routes the packet to the next network on its way.

Router applications

may have interfaces for many types of physical layer connections, such as copper cable, fiber optic, or wireless transmission. It can also support different network layer transmission standards. Each network interface is used to allow data packets to be forwarded from one transmission system to another. It can also be used to connect two or more logical groups of computer devices known as subnets, each with a different network prefix.

All sizes can be found within the company. The most powerful are usually found at ISPs, academic and research facilities. Large businesses may also need stronger ones to cope with the increasing demand for intranet traffic. Hierarchical internetworking models for interconnection in large networks are commonly used.