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Fault-tolerant networking

A network and network fault-tolerant technology, applied in the direction of bus network, star/tree network, data exchange through path configuration, etc., to achieve the effect of flexible cost of system configuration and low flexibility of system configuration

Inactive Publication Date: 2002-03-27
HONEYWELL INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

A network fault tolerance manager monitors fault detection and performs fault recovery

Method used

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  • Fault-tolerant networking
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Examples

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Embodiment

[0056] Example details

[0057] In the following detailed description, reference is made to the accompanying drawings in which are shown by way of illustrations of specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention, it being understood that other embodiments may be utilized and structural, logical and electrical modifications may be made without departing from the principles of the invention spirit and scope. The following detailed description is therefore not intended to be limiting, and the scope of the invention is defined by the appended claims. Like numbers in the figures refer to like elements, which should be apparent from the context of use.

[0058] The following detailed description is drafted on the premise of an Ethernet LAN. It will be apparent to those skilled in the art that the method is adaptable to other network protocols and other n...

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Abstract

Methods and apparatus for implementation of fault-tolerant networks provide a network fault-tolerance manager for detecting failures and manipulating a node to communicate with an active channel. Failure detection incorporates one or more methods, including message pair and link pulse detection. Failure recovery includes switching all node data communications to a stand-by channel or switching just those nodes detecting a failure. Communication between nodes provides the distributed detection, with detecting nodes reporting failures to their network fault-tolerance manager and the network fault-tolerance manager broadcasting the failure recovery to all nodes. The network fault-tolerance manager is middleware, residing with each node in a logical hierarchy above a physical layer of a network and below a transport layer of the network. The approach is particularly suited to Ethernet LANs and capable of using commercial off-the-shelf network components.

Description

technical field [0001] The present invention relates generally to network data communications. In particular, the present invention relates to apparatus and methods for providing network and network interface card fault tolerance, wherein the middleware implements fault detection and is capable of switching from an active channel to a backup channel upon detection of a fault on the active channel. The disclosed portion of this patent document includes material that is subject to copyright protection. [0002] The copyright owner does not object to anyone's facsimile reproduction of the patent disclosure, as it appears in the Patent and Trademark Office patent files or records, but all copyrights are reserved. The following notice applies to the software and data applications described below and in the accompanying drawings: Copyright  1998, Honeywell Corporation, all rights reserved. Background technique [0003] Computer networks have been widely used in business and ind...

Claims

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Application Information

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IPC IPC(8): H04L12/40H04L12/28H04L12/44H04L69/40
CPCH04L69/40H04L29/14
Inventor J·黄L·李S·宋
Owner HONEYWELL INC
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