Five-generation router Overview: Technology Convergence for Development (Group chart) (1)

As you know, a router plays an important role in a computer network and serves as a bridge between computer networks. It can not only connect different networks, but also select data transmission paths, and can block illegal access. As the core equipment of the IP network, vro has become a key technology in the information industry. Its Equipment plays an increasingly important role in data communication. At the same time, due to the powerful functions and complicated technology of the router equipment, manufacturers have too many choices for the realization of the router.

A router is a network device that connects multiple networks or CIDR blocks. It can translate data between different networks or CIDR blocks ", so that they can "read" each other's data to form a larger network. Vro has two typical functions: Data tunnel and control. The data channel functions include forwarding decision, backplane forwarding, and output link scheduling, which are generally completed by specific hardware. The control functions are generally implemented by software, it includes information exchange with neighboring routers, system configuration, and system management. In the past few years, the development of vrouters has continued.

In the middle of 1990s, traditional routers became the bottleneck restricting the development of the Internet. Instead, the ATM switch becomes the core of the IP backbone network, and the vro becomes a secondary role. In the end of 1990s, the Internet scale was further expanded, and traffic doubled every six months. The ATM network became a bottleneck, and the vro started again. After the Gbps route switch was launched in 1997, people began to replace the ATM switch with a Gbps route switch, and the architecture of the backbone network with a vro as the core. Vrouters are now in the fifth era. Let's take a look at the development of router technology and its typical products.

I. Application of vro technology:

1. First-generation router Technology and Its Products

The initial IP address is not large, and the device to be connected by the gateway and the load to be processed are also small. In this case, the Gateway Router can be implemented by inserting multiple network interface cards into a computer. The interface card is connected to the CPU of the central processor. the CPU is responsible for all transactions, including route collection, forwarding, and device management. After the network interface receives the packet, it passes it to the CPU through the internal BUS. After the CPU completes all the processing, it passes the packet from another network interface.

Typical products include Cisco2500 series routers and Huawei Quidway R2500 series routers. The following describes the Huawei Quidway R2500 series router products. Huawei's Quidway R2500 series routers include eight vrouters: Quidway R2501/2501E, Quidway R2509/2509E, Quidway R2511/2511E, and Quidway R4001/4001E.

Quidway R2500 series routers are the next-generation router products developed by Huawei for Small and Medium-sized offices. Quidway R2500 series routers use 32-bit microprocessor technology to use Huawei's network operating system platform-VRP universal routing platform.

VRP provides a simple configuration interface in both Chinese and English. It provides a wide range of network security features, supports access to the server through a dumb terminal, and supports SNA/DLSw, A complete backup center technology is widely used as a branch router.

The 8/16 asynchronous serial port provided by the Quidway R2500 series routers can be used as a dial-up access server for Small and Medium-sized ISPs, or 8/16 low-speed local networks can be connected through asynchronous dialing lines, the two multi-protocol and asynchronous serial ports can be connected to high-speed synchronous lines, remote LAN connections, or other ISPs.