Method of preventing erroneous take-over in a dual redundant server system
First Claim
1. A method of preventing erroneous take-over in a dual redundant server system, which is applied to a server system, and said server system comprises a primary server and a redundant server, and said method comprising the steps of:
- continuously outputting a heartbeat packet to said redundant server by said primary server;
producing a detecting signal by said redundant server when said redundant server has not received said heartbeat packet;
sending said detecting signal to said primary server through a redundant external transmission unit installed at said redundant server; and
taking over said primary server by said redundant server, when said redundant external transmission unit has not received an acknowledged signal sent from said primary server.
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Accused Products
Abstract
The present invention discloses a method for preventing erroneous take-over in a redundant server system, and the method is used for a server system having a primary server for continuously producing heartbeat packets and sending the heartbeat packets to a redundant server of the server system. If the redundant server has not received any heartbeat packet, a redundant external transmission unit of the redundant server will send a detecting signal to the primary server. If the redundant external transmission unit has not received an acknowledged signal from the primary server, the redundant server will take over the primary server to continue providing network services.
65 Citations
10 Claims
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1. A method of preventing erroneous take-over in a dual redundant server system, which is applied to a server system, and said server system comprises a primary server and a redundant server, and said method comprising the steps of:
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continuously outputting a heartbeat packet to said redundant server by said primary server; producing a detecting signal by said redundant server when said redundant server has not received said heartbeat packet; sending said detecting signal to said primary server through a redundant external transmission unit installed at said redundant server; and taking over said primary server by said redundant server, when said redundant external transmission unit has not received an acknowledged signal sent from said primary server. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification