Reliable multicast transmission method for ForCES protocol information

Abstract

The invention discloses a reliable multicast transmission method for ForCES protocol information. The method comprises the following steps: adding a reliable multicast module in a transmission mapping unit of a ForCES networkware; carrying out packet loss detection by a reliable multicast module in a forwarding element; and carrying out packet loss recovery by a reliable multicast module in a controlling element. Due to the adoption of the method, the reliable multicast transmission of control protocol information between ForCES networks is realized. Moreover, less control protocol information is processed by the controlling element in the ForCES networkware, the network bandwidth is saved, the reliable transmission of the control protocol information is ensured, and excellent performance of the ForCES networkware is guaranteed.

Description

technical field [0001] The invention relates to the technology of networkware, in particular to a method for reliable multicast transmission of protocol messages in the ForCES networkware. Background technique [0002] With the rapid expansion of the Internet and other computer technology network applications, new features and new requirements are constantly emerging and changing, which requires that the new generation of network equipment should be flexible enough to quickly respond to new services and new needs; It is required that the new generation of network equipment should have enough openness, so that users can flexibly combine according to the open resources to provide different network demand services; it is required that the new generation of network equipment should have sufficient modularity and be standardized through standardization organizations , so that each module can be independently researched and developed by different manufacturers, and can be organica...

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Problems solved by technology

[0007] The control protocol message sent by the control part in the ForCES router to the forwarding part needs to ensure reliability, while the traditional IP multicast only uses the UDP protocol to transmit messages, which cannot guarantee the reliability of the data, so IP multicast cannot be directly used to implement ForCES routers. The multicast of the control protocol message sent by the control part to the forwarder; for application layer multicast, a large number of literatures on application layer multicast research show that compared with IP multicast, application layer multicast consumes more bandwidth and has poor reliability. The transmission efficiency is low, and the disadvantages outweigh the advantages in improving the performance of ForCES routers, so application layer multicast is not used

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