Disaster recovery optimization method and system, and fallback indicating device

A technology of indicating device and optimization method, which is applied in transmission system, digital transmission system, data exchange network, etc., and can solve problems such as load imbalance
CN108023752BActive Publication Date: 2021-01-29CHINA TELECOM CORP LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA TELECOM CORP LTD
Publication Date
2021-01-29

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Abstract

The invention discloses a disaster recovery optimization method, a system and a fallback indicating device, and relates to the field of mobile communication. The disaster recovery optimization method includes: the rewinding indicating device detects that the evolved packet data gateway ePDG recovers from a failure; the reversing indicating device sends the load to the part of the ePDG whose load exceeds the preset load according to the stored load conditions of each ePDG The terminal sends a rewind indication, so that some terminals can attach to the recovered ePDG. After detecting that the ePDG returns to normal from a fault, send a revert instruction to some terminals loaded by the ePDG whose load exceeds the preset load, so that some terminals are attached to the recovered ePDG, so that the load of each ePDG after disaster recovery tends to balanced.
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Description

technical field

[0001] The invention relates to the field of mobile communication, in particular to a disaster recovery optimization method and system and a rewind indication device. Background technique

[0002] The disaster recovery solution of the existing ePDG (Evolved Packet Data Gateway, evolved packet data gateway) is as follows, taking the system including two ePDGs as an example.

[0003] The terminal discovers the ePDG by querying DNS (Domain Name System, domain name system). The DNS is configured with IP (Internet Protocol, Internet Protocol) addresses of two ePDGs, including IP1 corresponding to ePDG1 and IP2 corresponding to ePDG2, and the two ePDGs share terminal loads at an equal cost. For each query, DNS will change the order of IP1 and IP2 and return them to the querying terminal. Under normal circumstances, the terminal will select the first IP address in the returned result to connect and attach.

[0004] If ePDG1 fails, the terminals connected to ePDG1...

Claims

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