Router technology advances with the next generation of IP Network

The router technology in China has developed very rapidly. So I have studied the next generation of IP network and router technology. Here I will share with you, hoping to help you. At present, carriers and users urgently need a high-security, high-reliability, manageable, and operational IP network, which is difficult to achieve by relying on the current router technology. Key router technologies, such as QoS, security, and credibility, and the operational nature of the IP network, will become the focus of future network development.

1. IP Network Service Quality Problems

With the rapid development of network equipment routers technology, the performance of routers is greatly improved, as well as a large number of commercial DWDM, the transmission cost is greatly reduced. Services on the Internet are relatively slow, so that the network is relatively light-loaded. on the Internet, you can carry out a wide range of comprehensive services such as data, voice, and video, and conduct telephone communication. However, it is difficult to allocate these rich network resources to meet the needs of different businesses for network resources and meet the different service quality requirements of different businesses.

Service quality is measured at the business level. To truly solve service quality problems, it is not only possible to take vro technical measures at the network layer, it is expected to be resolved only when the application layer and the network layer are combined. The IP network is a non-connection-oriented network. Therefore, any connection-oriented technical measures violate the original design intention of the IP network. To solve the service quality problem of the IP network service, the ideal solution is to still use the "Classification Service" technology that is not connected, and divide the services in the IP network into several categories, assign appropriate network resources to each type of business to ensure the quality of service required by this type of business. At present, the quality of services of the IP network is mainly due to the lack of unified planning and protocols. As a result, the "Classification Service" technology is not actually going on.

2. Security and credibility of the IP Network

At present, many people, including some experts in the IP field, think that the IP network is an insecure network, which is used for general information retrieval, but cannot be used to load important business data, it cannot be used to carry important commercial business networks. telecom business networks do not dare to use public IP networks to carry business data, or even the business data of large enterprise networks cannot be loaded into public IP networks of enterprises. Telecom users naturally think that the X.25, F.R, and ATM data networks of China Telecom are secure networks. These three data networks are end-to-end addressing networks that currently undertake a large number of businesses that require high security.

Technically speaking, X.25, F.R, ATM, and IP Routers are based on the same technology. They are all based on statistical multiplexing group exchange technology. In many router technologies, they are very similar, so why are these three safe networks where users place high trust in them, while IP addresses are not recognized? Obviously, the IP network works in a non-connection-oriented way, while X.25, F.R, and ATM all adopt connection-oriented router technology. Connection orientation is implemented between end-to-end applications. End-to-End connections must be established through signaling before communication can be performed; instead of connecting, you do not need to establish a connection through signaling before you start business applications on an end-to-end basis, so you can directly communicate with each other. For business systems, the key to the security of end-to-end communication is the establishment of the trust relationship between end-to-end systems. The connection-oriented approach is to determine the trust relationship before the connection is established, A non-connection-oriented approach is to determine the trust relationship during communication. However, from the perspective of security strength, the security strength of the two work modes is the same.

At present, telecom-level IP networks are simply copying IP networks based on the Internet concept. They provide users with a free and convenient working platform as much as possible. In addition to charging a certain amount of network access fee for maintaining the survival of the network, in addition to user authentication and other management mechanisms, other network operators do not care. For a long time, due to the disorder and unmanagement of the Internet, the Internet network management mechanism and design concept have been despised to a considerable extent, and its security and credibility are willful. IP network operators must adopt all vro technical measures to ensure the security and credibility of the network. They must be responsible for network management.

3. operable and manageable

In the early stages of Internet development, the main task is to achieve computer interconnection. On this basis, users can obtain traditional data services such as E-Mail, FTP, and WWW, the network only provides the transmission service with the best effort, no QoS guarantee, no after-sales service guarantee, and the security problem is also solved by the user. The telecom network provides commercial services. The telecom services it provides are commodities. Therefore, it must ensure QoS and ensure sufficient security and reliability, we also need to ensure the after-sales service capabilities and strong manageability and maintainability of the network. Therefore, the telecom-grade IP network is by no means simply copying the IP router technology used by the existing Internet, but must thoroughly change the IP network, it effectively solves User Access Management, network resource management, network security management, monitoring of network nodes and business nodes, monitoring of business processes, and complete operation and maintenance systems. vro technical difficulties related to operation and management.