Shulou(Shulou.com)06/03 Report--

This article mainly introduces the meaning of router machine, which is very detailed and has certain reference value. Friends who are interested must finish reading it.

What does router mean? Routable Protocol (RoutedProtocol) routing Protocol (RoutingProtocol) transport, also known as a network protocol. These network protocols perform a variety of functions required to communicate between user applications of source and destination device behavior, which may vary widely among different protocols. Network protocols occur in the upper four layers of the OSI reference model: the transport layer, the session layer, the presentation layer, and the application layer.

What does router machine mean to introduce

Routing is the act of passing information from the source across the network to the destination. On the way, at least one intermediate node is encountered. Routing is usually compared to bridging, and to careless people, they seem to accomplish the same thing. The main difference between them is that bridging occurs at layer 2 (link layer) of the OSI reference protocol, while routing occurs at layer 3 (network layer). This difference enables the two to use different information in the process of transmitting information, thus accomplishing their tasks in different ways.

The topic of routing has long appeared in the computer world, but it was not commercially successful until the mid-1980s. The main reason for this delay was that networks in the 1970s were simple, and later large networks were more common.

What does router mean to make up

Routing consists of two basic actions: determining the best path and transmitting information over the network. In routed

In the process, the latter is also called (data) exchange. Switching is relatively simple, while choosing a path is complex.

Path selection

Metric is a metric used by routing algorithms to determine the best path to a destination, such as path length. In order to help routing, the routing algorithm initializes and maintains a routing table containing path information, which varies according to the routing algorithm used.

The routing algorithm populates the routing table based on a lot of information. The destination / next-hop address pair tells the router that the best way to reach this destination is to send a packet to the router that represents the "next hop". When the router receives a packet, it checks its destination address and tries to associate this address with its "next hop".

The routing table can also include other information. The routing table compares metric to determine the best path, and these metric vary depending on the routing algorithm used. Common metric is described below. Routers communicate with each other and maintain their routing table by exchanging routing information. Routing update information usually contains all or part of the routing table. By analyzing the routing update information from other routers, the router can establish a detailed map of the network topology. Another example of information sent between routers is link status broadcast information, which notifies other router senders of the link status, and the link information is used to establish a complete topology diagram so that the router can determine the best path.

The above is all the contents of the article "what does a router machine mean?" Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.