Method for supporting link management of hot connection and disconnection

Abstract

The present invention discloses a link management method for supporting thermal plugging-in and pulling-out. It is a link management method of interconnected network system and its technical scheme is characterized by designing port module of route chip to implement receiving and transmitting of link data, management of link state and management of serial number and information protocol, and the port module is formed from link state machine module, port input module, port output module, port protocol management module and port serial number management module. Said invention also provides the concrete steps of said link management method.

Description

Technical field: [0001] The invention relates to a communication link management method in the computer field, in particular to a link management method that supports hot plugging in the design of a high-performance routing chip of an interconnection network system that adopts contract flow control and cable connection. Background technique: [0002] At present, in high-performance computer systems, a large number of interconnection subsystems use cables (optical cables, cables) to connect to realize long-distance transmission. Due to the large number of cables used in the system, the cable failure rate is relatively high for such systems. The maintainability of cables directly affects the availability of the entire computer system. At present, when the cable in the computer system fails, the usual processing methods are: [0003] 1) Shut down the entire computer system, replace the faulty cable and then restart the system. The consequence of such processing may be very s...

AI Technical Summary

Problems solved by technology

Although these technologies can improve the reliability of the system, it is necessary to solve the problem that the sending and receiving logic between the two ports is no longer synchronized due to the port signal jitter caused by the hot plugging. The port logic at both ends of the link cannot be completely synchronized, which leads to the loss of the contract of the port, and the problem that the port no longer has the contract after hot plugging, which causes the message to be blocked and the message cannot flow in the interconnection system.

[0006] The hot-swap implementation method of routing chip port cables has always been a concern in the computer field, and there is no public technical information related to this aspect.

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