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Service interruption prevention method and device

A business interruption and centralized technology, applied in the field of network communication, can solve problems such as traffic interruption and achieve the effect of preventing business interruption

Active Publication Date: 2015-01-28
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The line card board contains the CPU control system and the forwarding chip system. When the line card board is restarted, the CPU control system and the forwarding chip system on the line card board need to be reset, which will cause all traffic on the line card board to be upgraded. All interrupts in
[0008] For centralized equipment, its upgrade can only be performed by resetting the board, which will also cause traffic interruption

Method used

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  • Service interruption prevention method and device
  • Service interruption prevention method and device

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Embodiment Construction

[0023] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] Before describing the method for preventing service interruption provided by the present invention, first analyze the structure of the line card in the distributed equipment. The structure of the centralized equipment is similar to that of the line cards in the distributed equipment. For the convenience of description, the centralized equipment is collectively referred to as the line card below.

[0025] In the present invention, the line card board can basically be simply divided into two systems:

[0026] CPU control system, which uses a CPU to complete the processing of the control plane, including running various protocols and setting forwarding entries.

[0027] The chip forwarding system usually consists of a set of dedicated forward...

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Abstract

A method and a network device for preventing service disruption during a restart of a line card. The line card including a CPU control system and a forwarding system. Information on the CPU control system is stored in a predetermined storage and a flag is set prior to the restart of the line card. The stored information includes configuration information of the forwarding system and protocol state information of the CPU control system. The CPU control system is restarted while the forwarding system is maintained in a state of providing forwarding service. Upon detecting the flag is set during the restart of the CPU control system, the stored information is restored on the CPU control system.

Description

technical field [0001] The invention relates to network communication technology, in particular to a method and device for preventing service interruption. Background technique [0002] At present, the existing network has higher and higher requirements on the reliability of equipment, and it is generally required that the equipment has the ability to upgrade services without interruption, that is, the so-called ISSU capability. Mainstream manufacturers usually configure devices that support uninterrupted business upgrades as distributed devices. The distributed equipment includes dual main control boards and several line card boards. Among the dual main control boards, one is the active main control board and the other is the standby main control board. When upgrading distributed devices, follow the figure 1 The flow shown executes: [0003] Step 101, updating the version of the standby main control board to a new version, restarting the standby main control board; [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/70H04L45/24
CPCH04L45/22H04L41/0672H04L41/0661
Inventor 王峰
Owner NEW H3C TECH CO LTD
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