Backup method and system for stack equipment

Abstract

The embodiment of the invention provides a backup method and system for stack equipment. The method comprises the following steps: after all equipment in the stack equipment negotiate master equipmentand salve equipment, the master equipment sets the master equipment as PSE power supply equipment, and sets other slave equipment as PD power receiving equipment; the master equipment turns on a corresponding power supply switch, and supplies power for other slave equipment through a POE link between the master equipment and other slave equipment; when acquiring that the master equipment is abnormal from other slave equipment, other equipment elects one set of slave equipment as the new PSE power supply equipment; the new PSE power supply equipment sets other equipment except the PSE power supply equipment as the PD power receiving equipment; the new PSE power supply equipment turns the corresponding power supply switch, and supplies power for other equipment through the POE link betweenthe new PSE power supply equipment and other equipment. The redundant backup of the power supply is guaranteed when the data stack is realized through the backup method provided by the embodiment of the invention, the handover packet loss caused by equipment power failure can be avoided, and the stack equipment performance is improved.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of switches, and in particular to a backup method and device system for stacking devices. Background technique [0002] Switch stacking refers to combining more than one switch to work together to provide as many ports as possible in a limited space. Multiple switches are stacked to form a stack device. figure 1 It is a schematic diagram of dual-machine stacking equipment in the prior art, such as figure 1 As shown, the stacking device includes switch 1 and switch 2, wherein switch 1 is the master device in the stacking device, and switch 2 is the slave device in the stacking device. According to its working principle, switch 1 is in charge of the entire system control plane. According to statistics , the power failure rate accounts for about 30% of the total failure rate of switches. If switch 1 or switch 2 has a power failure, the entire stack device will split, and it will take a pe...

AI Technical Summary

Problems solved by technology

However, on the one hand, when there are many switches connected to the stacking device, to realize power backup, more power supplies need to be inserted into the system, which greatly increases the power cost; on the other hand, when a single device is abnormally managed Afterwards, the active and standby power supplies cannot be switched, which will cause the device to be powered off, and the stacked device will be switched. Packet loss will occur during the switching process, causing the entire stacked device to be abnormal.

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