Mesh restorable service systems and methods with preemptible established backup paths
AssigneeCiena Corporation
InventorsDarek SKALECKI, Gerard L. SWINKELS
Life of this patent
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Abstract
A method, implemented in a node in a network, for a preemptible established backup path for a mesh restorable service includes, responsive to a new service request for the mesh restorable service with the preemptible established backup path, establishing a primary path designated as a current path for the mesh restorable service at a designated priority; establishing a backup path for the mesh restorable service at a lower priority than the designated priority, subject to bandwidth availability in the network; and responsive to a fault affecting the primary path, switching to the backup path and raising a priority of the backup path to the designated priority.
Claims20
A method, implemented in a node in a network, for a preemptible established backup path for a mesh restorable service, the method comprising:
- responsive to a new service request for the mesh restorable service with the preemptible established backup path, establishing a primary path designated as a current path for the mesh restorable service at a designated priority;
- establishing a backup path for the mesh restorable service at a lower priority than the designated priority, subject to bandwidth availability in the network;
- and
- responsive to a fault affecting the primary path, switching to the backup path and raising a priority of the backup path to the designated priority.
An apparatus, in a node in a network, for a preemptible established backup path for a mesh restorable service, the apparatus comprising:
- circuitry adapted to establish, responsive to a new service request for the mesh restorable service with the preemptible established backup path, a primary path designated as a current path for the mesh restorable service at a designated priority;
- circuitry adapted to establish a backup path for the mesh restorable service at a lower priority than the designated priority, subject to bandwidth availability in the network;
- and
- circuitry adapted to switch, responsive to a fault affecting the primary path, to the backup path and raise a priority of the backup path to the designated priority.
A node in a network adapted to provide a preemptible established backup path for a mesh restorable service, the node comprising:
- one or more ports;
- and
- a controller communicatively coupled to the one or more ports, wherein the controller is adapted to
- establish, responsive to a new service request for the mesh restorable service with the preemptible established backup path, a primary path designated as a current path for the mesh restorable service at a designated priority,
- establish a backup path for the mesh restorable service at a lower priority than the designated priority, subject to bandwidth availability in the network, and
- switch, responsive to a fault affecting the primary path, to the backup path and raise a priority of the backup path to the designated priority.
Dependencies are inferred from the claim text.