Communications path status detection system
First Claim
1. A network failover apparatus for use in a client-server system, comprising:
- a preferred interface couplable to a server through a first network;
a further interface couplable to the server through a further network;
a failed preferred interface detector to identify the preferred interface as a failed interface when the server is not reachable through the preferred interface;
a device to establish connection to the server through the further interface when the preferred interface is identified as a failed interface;
a device to test the identified failed interface to determine whether the server is reachable through the identified failed interface while the further interface is connected to the server; and
a device to reestablish connection to the server through the preferred interface.
17 Assignments
0 Petitions
Accused Products
Abstract
A network failover apparatus and method for use in a client-server system. The method includes establishing at least a first and further path between a client and a server. The first path connects the server to the client through a first network and a first interface of the client and the further path connects the server to the client through a further network that is separate from the first network and a further interface of the client. The method also includes reaching the server through the first interface, detecting that the server is no longer reachable through the first interface, and identifying the first interface as failed. The method also includes reaching the server through the further interface after the first interface is identified as failed, testing the first interface to determine whether the server is reachable while the server is reachable through the further interface, and reestablishing a connection to the server through the first interface.
19 Citations
29 Claims
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1. A network failover apparatus for use in a client-server system, comprising:
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a preferred interface couplable to a server through a first network; a further interface couplable to the server through a further network; a failed preferred interface detector to identify the preferred interface as a failed interface when the server is not reachable through the preferred interface; a device to establish connection to the server through the further interface when the preferred interface is identified as a failed interface; a device to test the identified failed interface to determine whether the server is reachable through the identified failed interface while the further interface is connected to the server; and a device to reestablish connection to the server through the preferred interface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A network failover method for use in a client-server system, comprising:
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establishing at least a first and further path between a client and a server, wherein the first path connects the server to the client through a first network and a first interface of the client and the further path connects the server to the client through a further network that is separate from the first network and a further interface of the client; reaching the server through the first interface; detecting that the server is no longer reachable through the first interface, and identifying the first interface as failed; reaching the server through the further interface after the first interface is identified as failed; testing the first interface to determine whether the server is reachable while the server is reachable through the further interface; and reestablishing a connection to the server through the first interface. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification