Complete analysis of Internet backbone router technology

The backbone router technology in China is developing rapidly and widely used in the network. The characteristics and practical application of the backbone router technology on the Internet are analyzed here. From any angle, the Internet is growing at an astonishing rate, such as the number of hosts, the number of users, the business volume, the number of links, the bandwidth of a single link, and the growth rate of the carrier's network.

As a result, a network device market is emerging to solve the special problems faced by Internet backbone network operators. These new product devices are not only required to collect bandwidth and service throughput, but also have rich software functions and control features. The Internet backbone router technology must simultaneously implement the increased bandwidth and a wide range of software functions. The routing system must adopt the forwarding function that was previously available only in the vswitch. However, compared with providing direct switching of line rate performance for data packets with a fixed length to query with a fixed length, it is much more complicated to implement the line rate performance for data packets with an indefinite length to be queried by the application. In particular, the processing of such data packets can no longer be achieved through a microprocessor or Microprocessor-assisted approach, however, an ASIC method based on changing its routing software as the Internet environment changes.

The system challenges faced by this new Internet backbone router technology are also very complex. They not only need to adapt to the existing OC-3, OC-12 and OC-48 Speed Backbone Network and the relevant Intra-POP structure, it also supports a OC-48 Speed Backbone Network with OC-192 rate and Kyrgyzstan Ethernet Intra-POP structure. In addition, the new routing system must speed up the transition from the "submit as much as possible" service to the most basic reliability service. Internet users want to receive high-quality services when they need to communicate with each other, just like using a telephone network.

Backbone Router technology is the world's most complete routing system. It is the first system that combines Internet scalability, Internet control, and unparalleled forwarding performance. It not only integrates the forwarding function that only a vswitch has, but also takes into account the flexibility and controllability of the vro software, as well as the stability and reliability of the system under unexpected conditions. It can be applied to an Internet system based on optical networks. It helps carriers transition the Internet from a "try to submit" system to a basic reliable communication system.

Carrier needs and benefits

The rapid growth of the Internet has had a profound impact on how operators configure and manage services for their customers. When the operator tries to expand its network, it will constantly encounter the following problems that need to be solved: While rapidly increasing the business volume and meeting the customer's needs, the challenge of enhancing network reliability is 7 × 24 ); in terms of optimizing effective bandwidth usage and maintaining network reliability, we need traffic engineering tools. How can we stay consistent with the evolving Internet backbone router technology, including new protocols, New Routing hardware, new switching hardware and optical fiber equipment; how to find enough space and install the equipment according to the user's needs and line feasibility; how to provide different services to distinguish them from other competitors while meeting stability requirements. Any solution that wants to enter the carrier market must face all these challenges. If a new system cannot improve network performance and provide basic reliability, this solution will be doomed to fail.

Carriers need solutions that provide both rich routing software and high-speed packet forwarding performance. However, it is difficult for operators to find a single system that can meet both needs, because the traditional backbone router technology was originally designed to support a wide range of protocols for software functions, therefore, the product implementation shows a centralized software processing structure based on general CPU. In addition, in order to maintain product compatibility and protect existing users' device investment, the equipment provider fails to develop a satisfactory system that can meet both needs at the same time. In the past, if a carrier wanted to use a variety of software features in a complex network design to enhance network control, he had to endure the slow forwarding performance of the router.

To address these constraints, some operators have decided to use the "coverage" solution, that is, to use the IP backbone router technology on the edge of the network to provide software richness, the core part of the network uses an ATM switch to provide a high speed. However, such a covered network may cause some management problems. If there is a system that is designed to simplify high-bandwidth networks and is cheaper than a coverage network solution, it will undoubtedly become a common choice for operators. The new generation of Internet backbone router technology will provide this performance, which will make network designers no longer bother configuring backup devices on different layers to meet basic speed control requirements.