Patent
ATM virtual path switching node
Makoto Nishio,Hiromitsu Watanabe +1 more
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TLDR
In this paper, a link fault determination unit compares the number of faulty current virtual paths with a predetermined threshold value, and when the link fault is equal to or larger than the threshold value the message communication unit transmits/receives a virtual path fault notification signal to/from another ATM virtual path switching node.Abstract:
In an ATM virtual path switching node, upon being notified of a current virtual path by a virtual path monitoring unit, a link fault determination unit compares the number of faulty current virtual paths with a predetermined threshold value. When the number of faulty current virtual paths is equal to or larger than the threshold value, a link fault is determined, and a message communication unit transmits/receives a link fault notification signal to/from another ATM virtual path switching node. When the number of faulty current virtual paths is smaller than the threshold value, a current virtual path fault is determined, and the message communication unit transmits/receives a virtual path fault notification signal to/from another ATM virtual path switching node. The message communication unit transmits a switching control signal for designating switching from the current virtual path to a stand-by virtual path. A current virtual path information management unit manages correspondence between the current virtual path having, as one switching terminal, a self ATM virtual path switching node and a plurality of links in an ATM network.read more
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References
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Patent
Packet-switched network having alternate virtual paths
TL;DR: In this article, a virtual path memory stores data indicating link-to-link connections associated with normal virtual paths and link to link links associated with alternate virtual paths, and a fault detector is coupled to the communication links to detect a link failure.
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Path changing system and method for use in ATM communication apparatus
TL;DR: In this article, an ATM path changing system and method for use in an ATM communication apparatus and ATM communication network are provided which can set an alternating route in the event of a failure occurring in a transmission line or VP.
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Telecommunications network restoration architecture
Askew James D,Chao Chin-Wang,Cochran David R,Peter M. Dollard,Eslambolchi Hossein,Goodson William E,Robert P. Guenther,Omar M. Mansour,Liem T. Nguyen,Sarma S. Tanuku +9 more
TL;DR: In this paper, a restoration system for enhancing the reliability of a telecommunications network such that particular traffic which is disrupted by, for example, a faulty link, may be quickly rerouted via an alternate route established "on the fly".
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Asynchronous transfer mode link recovery mechanism
Ajit G. Hemmady,Carl F. Reisig +1 more
TL;DR: In this paper, the authors propose an inter-node communications link failure recovery system for ATM nodes, in which connections are quickly switched from a faulty link to one or more existing links.
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Dual-ring atm communications system
TL;DR: In this article, a fault on the second segment of the associated ring is detected by a fault detector, and a connection is established from the multiplexer of the other subsystem to the demultiplexers of the own subsystem, and the latter is disconnected from the second ring.