Fault detection and recovery method and system

Abstract

The invention relates to modularized communication network equipment and discloses a fault detection and recovery method and system. The fault detection and recovery method includes the steps that (a) a first identifier is written into a first register, and a second identifier is written into a second register; (1b) the first identifier in the first register is detected; (1c) whether the first identifier changes is judged, wherein it shows that a daughter card fails if the first identifier changes, then the step 1d is carried out, and otherwise, the step 1b is executed again after a set time is due; (1d) uninstalling and reloading are executed on the daughter card; (2b) the second identifier in the second register is detected; (2c) whether the second identifier changes is judged, wherein it shows that the daughter card fails if the second identifier changes, then the step 2d is carried out, and otherwise, the step 2b is executed again after a set time is due. The steps from 1b to 1d and the steps from 2b to 2d are executed in parallel or one after another. The invention further discloses the fault detection and recovery system. Through the fault detection and recovery method and system, the time of service interruption affected by a fault is shortened, and the investment cost of manpower is reduced.

Description

technical field [0001] The invention relates to the field of network communication, in particular to a method for automatic detection and recovery of sub-card faults of modular communication network equipment. Background technique [0002] The network equipment described in the present invention includes switches and routing equipment and so on. The emergence of modular subcards improves the reloadability of communication services. For example, the same switch can use modular subcards with different functions to implement different services without using different types of switches to realize service replacement. However, due to the characteristics of the sub-card, the maintenance of the sub-card has also become a major problem in the use of the sub-card. [0003] In order to realize the modularization of the switching port of the network equipment, sometimes the switching chip and the physical layer chip on the network equipment are deployed on different printed circuit bo...

AI Technical Summary

Problems solved by technology

The problem at this time is that the system does not perceive the power-off of the sub-card, and the physical layer chip on the sub-card enters the initial state due to power-off and power-on again. At this time, the actual chip content of the sub-card and the management inconsistent content

The second type of failure is that after a relatively serious electric shock occurs, the physical layer chip will fail to connect to the link and fail to connect to the normal link by re-enabling the link.

The reason for this problem is that the PMD (Physical Medium Dependent, Physical Medium Dependent Layer Interface) of the physical layer chip cannot normally recognize the physical signal sent by the peer device due to the electric shock, resulting in the failure of the port link connection.

[0006] Since the sub-card itself carries part of the business, when a fault occurs, it will affect the customer's related business content for a long time, and at the same time, repairing the fault requires related manpower input

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