What is the basic router?

Core router is a type of very powerful computer router used in large computer networks. It is the fastest, strongest and most expensive available router class. The core router sits in the heart of the net and manages the flow of data packets in the network, often relies on smaller routers for connection.

in the world of routers, not all machines are created equivalent. While all types of routers have the same basic function when controlling the flow of data packets, the number of packets that one router must process at once depends on where and how the device is used. Consumer routers used to connect many houses and small offices with the Internet must only deal with a fraction of data that the router must manage the router in a large provider of the company or Internet service providers (ISP). As a result, the routers differ considerably in size, performance and costs.

very large afterUse the Commonly counter network to use the routers hierarchy. At the top of this hierarchy are core routers, the fastest and most powerful class. One core router can stand as well as a top sports car and is able to process millions of packets every second. It generally sits in the "center" of very large networks and sends and receives packets to lower routers, such as EDGE routers sitting on the edge of the net and transfer packets to other networks. These routers can communicate with each other using Border Gateway Protocol (BGP) and can share information about the best routes to do or network destinations that have become a shortage.

Early core router incarnations contained a "global routing table", a database containing virtually every possible route that the packet could take to achieve its goal. These routers were therefore considered a core or backbone of the Internet and were an essential part of early Internet architecture. Like Thin Internet, howeverOstl, even the most advanced router could not keep up with the number of possible routes. Large networks were divided into smaller units known as autonomous systems (AS). The modern core router still maintains a large routing table; The range of this table is limited to AS rather than the Internet as a whole, but the concept of the "core" of the Internet to a large extent outdated.

Due to their costs, the market for basic routers is largely limited to Internet service providers and some large institutions such as universities. There were once several companies providing basic routers, but the end of the DOT-COM boom associated with a number of acquisitions of Cisco Systems® narrowed only two to two: Cisco®, which runs most of the market, and Juniper Networks®. Since the beginning of 2000, both companies have played a constant Leapfrog game, and both of them now produce routers capable of handling a huge amount of data.