ACTIVATION SIGNALING IN TRANSPORT NETWORKS
First Claim
Patent Images
1. A method comprising the steps of:
- receiving a signal indicative of a failure of a working connection in a mesh network having a headend node, a tailend node and an intermediate node, and having a protecting connection; and
transmitting an activation message via the protecting connection from at least one of the headend node and the tailend node to the intermediate node for activating the protecting connection.
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Abstract
A method comprising the steps of receiving a signal indicative of a failure of a working connection in a mesh network having a headend node, a tailend node and an intermediate node, and having a protecting connection, and transmitting an activation message via the protecting connection from at least one of the headend node and the tailend node to the intermediate node for activating the protecting connection.
42 Citations
25 Claims
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1. A method comprising the steps of:
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receiving a signal indicative of a failure of a working connection in a mesh network having a headend node, a tailend node and an intermediate node, and having a protecting connection; and transmitting an activation message via the protecting connection from at least one of the headend node and the tailend node to the intermediate node for activating the protecting connection. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method, comprising the steps of:
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receiving, by one of a headend node and a tailend node, a signal indicative of a failure of a working connection in a shared-mesh protection GMPLS network having the working connection and a protecting connection for passing user traffic; and transmitting an activation message complying with a protocol other than a routing and signaling protocol of the shared-mesh protection GMPLS network from at least one of the headend node and the tailend node to at least one intermediate node of the protecting connection for activating the protecting connection. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A node, comprising:
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an input interface for receiving traffic from a first communication link; an output interface for transmitting traffic to a second communication link; a switch for communicating the traffic from the input interface to the output interface; a control module utilizing GMPLS protocols and controlling the input interface, the output interface and the switch, the control module storing connection information indicative of a working connection, and at least one protecting connection; and wherein the input interface is configured to receive a signal indicative of a failure of the working connection, form an activation message to activate a first protecting connection, and pass the activation message to the output interface by using the switch and bypassing the control module. - View Dependent Claims (16, 17, 18, 19)
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20. A method, comprising:
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detecting a fault in a working connection, the working connection being a first path in a mesh network including a plurality of nodes, one of the plurality of nodes including a first line module, a second line module and a control plane; supplying, to the first line module, first information identifying a protecting connection for carrying data by the control plane, the protecting connection being a second path in the mesh network; generating, with circuitry provided in the first line module, second information including an activation message for activating the protecting connection; supplying the second information to the second line module by bypassing the control plane, the second line module being coupled to a link, the link being part of the protecting connection; and activating, with circuitry provided in the second line module, the link in response to the second information, such that the second line module supplies data to the protecting connection. - View Dependent Claims (21, 22, 23, 24, 25)
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Specification