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Table item synchronization method and device

A synchronization device and table entry technology, applied in the field of communication, can solve problems such as abnormal data forwarding, non-receipt, inconsistent ARP information index mapping table, etc., to achieve the effect of ensuring normal forwarding and improving forwarding performance

Active Publication Date: 2019-04-05
HANGZHOU DPTECH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the active main control board restarts abnormally during the backup process, the standby main control board may not have received the instruction to delete the corresponding relationship information, resulting in The ARP information index mapping table maintained by the chip is inconsistent, which leads to abnormal data forwarding

Method used

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  • Table item synchronization method and device
  • Table item synchronization method and device
  • Table item synchronization method and device

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Embodiment Construction

[0019] In order to make the purpose, technical solution and advantages of the present application clearer, the solution of the present application will be further described in detail below with reference to the accompanying drawings.

[0020] In order to solve the problems in the prior art, the present invention provides a table item synchronization method and device.

[0021] Please refer to figure 2 , is a schematic diagram of the processing flow of the entry synchronization method provided by the present invention. The entry synchronization method can be applied to the active main control board in the network equipment, and the network equipment also includes a forwarding chip and a standby main control board. In the When the active main control board fails, the standby main control board is switched to be the new active main control board. Wherein, the entry synchronization method includes the following steps:

[0022] Step 201, after the active main control board is st...

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Abstract

The present invention provides a table entry synchronization method and device, wherein the method includes: after the active main control board is started, obtaining the first ARP information index mapping table pre-stored on the forwarding chip; Whether the pre-stored first ARP information index mapping table is consistent with the second ARP information index mapping table stored on the active main control board; if not, the first ARP information index mapping table on the chip or the main control board will be forwarded In the second ARP information index mapping table saved above, the correspondence relationship information between the ARP entry and the resource index that is inconsistent is deleted. The invention ensures the normal forwarding of data and improves the overall forwarding performance.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a table item synchronization method and device. Background technique [0002] When the active main control board of a network device with dual main controls is running normally, the standby main control board is in a silent state and does not communicate with the service modules and the external network. When the active main control board is down or the user is forced to switch, the standby main control board will take over from the active main control board to ensure the uninterrupted forwarding of the system. [0003] Such as figure 1 In the shown network device with dual main control boards, the active main control board is used to maintain and deliver configuration data to the forwarding chip, and at the same time back up the configuration data to the standby main control board. When the network device learns an ARP entry with ARP (Address Resolution Protoc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24H04L12/741H04L45/74
CPCH04L41/0668H04L45/74
Inventor 刘成乾
Owner HANGZHOU DPTECH TECH