Ciena Corporation

Trevor Donald Corkum

Trevor John Ibach

Larry Babineau

John K Oltman

Jeffrey Scott Moynihan

Hassan Dayfallah

Systems and methods for Tandem Connection Monitor (TCM) control for the physical layer on Optical Transport Unit (OTU) ports provide the ability of the TCM status to directly control client laser state (on/off) so that protection engines and coordination between modules is not required. The systems and methods include receiving a specific defect such as a Tandem Connection Monitor (TCM) defect or a Server Signal Fail (SSF) defect from interface circuitry; propagating the TCM defect or the SSF defect from the interface circuitry to an interface associated with a modem including a physical port connected to a network; and selectively disabling a laser in the modem based on the specific defect, e.g., the TCM defect or the SSF defect from the interface circuitry.

TCM control for physical layer on OTU ports

The present disclosure provides Optical Transport Network (OTN) port protection systems and methods using flexible switch criteria. Specifically, the OTN port protection systems and methods provide linear protection in OTN such as 1+1 Protection with Automatic Protection Switching (APS) and/or 1+1 Subnetwork Connection Protection (SNCP) Protection. The OTN Port Protection with flexible switch criteria allows a user to provision a protection application on an OTN Port and select a switch criteria, Section Monitoring, Path Monitoring, or Tandem Connection Monitoring, without considering the provisioning state of an Optical channel Data Unit level k (ODUk) entity. The ODUk entity may either be cross-connected in the LO case or terminated in the HO case. The ODUk entity may be provisioned independently, after the port protection has been established.

Optical transport network port protection systems and methods using flexible switch criteria

Systems and methods for generic non-client specific 1+1 protection are described supporting a uni-directional protection scheme for client interfaces on Optical Transport Network (OTN) networking equipment, regardless of the client protocol and without hardware which can participate in those client protocols. This generic non-client specific 1+1 protection can be implemented in an OTN node, an OTN switching device, or via an OTN method. Faults on client signals are escalated to, and processed at, the ODU path layer instead of the client protocol layer, providing a normalized mechanism for client signal protection.

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Middle New Cornwall, Canada

Trevor Donald Corkum