A method and server for dual-machine backup

A dual-machine backup and backup server technology, applied in digital transmission systems, data exchange networks, error prevention and other directions, can solve problems such as easy loss of state tables, and achieve the effect of avoiding easy loss and flexible backup methods.
CN104836677BInactive Publication Date: 2018-10-12赵修文
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
赵修文
Publication Date
2018-10-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

The embodiment in the invention discloses a double-machine backup method and servers. The method in the embodiment of the invention comprises: determining a current speed of a backup link by a main server; searching a pre-set backup relation table, and determining a priority collection corresponding to the current speed of the backup link by the main server, wherein the backup relationship table contains a corresponding relationship between a speed range and the priority collection; obtaining a to-be-backed-up state table from the state tables in the main server, wherein the priority of the to-be-backed-up state table belongs to the priority collection; and sending the to-be-backed-up state table to an auxiliary server of the main server. The backup of the state table is realized through obtaining the to-be-backed-up state table based on the current speed of the backup link; a situation that a state table is easy to lose due to excessive state tables is effectively avoided; the backup mode is comparatively flexible; and the to-be-backed-up state table can be determined according to the priority, so that the state table with a high priority can be preferentially backed up.
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Description

technical field

[0001] The invention relates to the field of communication equipment, in particular to a dual-machine backup method and server. Background technique

[0002] Network devices such as servers will generate state tables based on data packets in order to realize data transmission, such as: Carrier Grade Network Address Translation (English full name: Carrier Grade Network Address Translation, abbreviated as CGN) and firewalls will generate flow tables.

[0003] In the prior art, after the state table is generated on the server, the forwarding of the data message will be based on the state table. In the scenario of dual-machine backup, the active server needs to back up the state table to the standby server. If the backup is incomplete, the data flow will be different after the active-standby switchover, resulting in business interruption, which will cause major damage to important businesses such as banking and securities. Loss.

[0004] Existing backup mechani...

Claims

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