SYSTEMS AND METHODS FOR SELECTION OF OPTIMAL ROUTING PARAMETERS FOR DWDM NETWORK SERVICES IN A CONTROL PLANE NETWORK
First Claim
1. A method, in an intermediate node in a control plane network, for selecting optimal routing parameters for Dense Wave Division Multiplexing (DWDM) network services, the method comprising:
- receiving a setup message from an originating node, wherein the setup message is sent towards a terminating node on a computed path in the control plane network, and the setup message indicates associated Layer 0 attributes/constraints;
validating the associated Layer 0 attributes/constraints based on locally available resources; and
performing one of;
forwarding the setup message on the path towards the terminating node when validation is successful;
forwarding the setup message on the path towards the terminating node with updated information indicating a rejection cause and additional information, when the validation is unsuccessful but a modification of the Layer 0 attributes/constraints is possible; and
transmitting a release message on the path back to the originating node with updated information indicating a rejection cause and additional information when the validation is unsuccessful and no modifications of the Layer 0 attributes/constraints are possible.
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Abstract
A method, in an intermediate node in a control plane network, includes receiving a setup message from an originating node, wherein the setup message is sent towards a terminating node on a computed path in the control plane network, and the setup message indicates associated Layer 0 attributes; validating the associated attributes/constraints based on locally available resources; and performing one of: forwarding the setup message on the path towards the terminating node when validation is successful; forwarding the setup message on the path towards the terminating node with updated information indicating a rejection cause and additional information when the validation is unsuccessful, but a modification of the Layer 0 attributes/constraints is possible; and forwarding a release message on the path back to the originating node with updated information indicating a rejection cause and additional information when the validation is unsuccessful and no modifications of the Layer 0 attributes/constraints are possible.
24 Citations
20 Claims
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1. A method, in an intermediate node in a control plane network, for selecting optimal routing parameters for Dense Wave Division Multiplexing (DWDM) network services, the method comprising:
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receiving a setup message from an originating node, wherein the setup message is sent towards a terminating node on a computed path in the control plane network, and the setup message indicates associated Layer 0 attributes/constraints; validating the associated Layer 0 attributes/constraints based on locally available resources; and performing one of; forwarding the setup message on the path towards the terminating node when validation is successful; forwarding the setup message on the path towards the terminating node with updated information indicating a rejection cause and additional information, when the validation is unsuccessful but a modification of the Layer 0 attributes/constraints is possible; and transmitting a release message on the path back to the originating node with updated information indicating a rejection cause and additional information when the validation is unsuccessful and no modifications of the Layer 0 attributes/constraints are possible. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An intermediate node in a control plane network, for selecting optimal routing parameters for Dense Wave Division Multiplexing (DWDM) network services, the intermediate node comprising:
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one or more ports communicatively coupled to one or more adjacent nodes; and a controller communicatively coupled to the one or more ports, wherein the controller is configured to; receive, via the one or more ports, a setup message from an originating node, wherein the setup message is sent towards a terminating node on a computed path in the control plane network, and the setup message indicates associated Layer 0 attributes/constraints; validate the associated Layer 0 attributes/constraints based on locally available resources; and perform one of; forward the setup message on the path towards the terminating node when validation is successful; forward the setup message on the path towards the terminating node with updated information indicating a rejection cause and additional information when the validation is unsuccessful, but a modification of the Layer 0 attributes/constraints is possible; and transmit a release message on the path back to the originating node with updated information indicating a rejection cause and additional information when the validation is unsuccessful and no modifications of the Layer 0 attributes/constraints are possible. - View Dependent Claims (17, 18, 19)
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20. A network, comprising:
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a plurality of nodes interconnected by a plurality of links; an originating node of the plurality of nodes configured to send a setup message to a terminating node of the plurality of nodes with associated Layer 0 attributes/constraints in the setup message; and one or more intermediate nodes of the plurality of nodes, wherein the one or more intermediate nodes are in a path between the originating node and the terminating node, wherein the one or more intermediate nodes are configured to validate the associated Layer 0 attributes/constraints sequentially; wherein, each of the one or more intermediate nodes is configured to perform one of; forward the setup message on the path towards the terminating node when validation is successful; forward the setup message on the path towards the terminating node with updated information indicating a rejection cause and additional information when the validation is unsuccessful, but a modification of the Layer 0 attributes/constraints is possible; and transmit a release message on the path back to the originating node with updated information indicating a rejection cause and additional information when the validation is unsuccessful and no modifications of the Layer 0 attributes/constraints are possible.
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Specification