Optical transport network port protection systems and methods using flexible switch criteria
First Claim
1. An Optical Transport Network (OTN) port protection method, comprising:
- provisioning a working port and a protection port between two OTN network elements, the working port and the protection port providing linear OTN protection therebetween;
selecting one or more switch criteria based on received data between the working port and the protection port, wherein the switch criteria include Section Monitoring, Path Monitoring, and Tandem Connection Monitoring in OTN overhead on the working port monitored for associated protection switching, and wherein, when selected as switch criteria, the Path Monitoring and the Tandem Connection Monitoring are configured as transparent through intermediate nodes; and
automatically setting up a switch mode for the two OTN network elements based on the selected switch criteria;
wherein the linear OTN protection comprises Subnetwork Connection Protection with and without an Automatic Protection Switching protocol.
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Accused Products
Abstract
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.
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Citations
20 Claims
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1. An Optical Transport Network (OTN) port protection method, comprising:
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provisioning a working port and a protection port between two OTN network elements, the working port and the protection port providing linear OTN protection therebetween; selecting one or more switch criteria based on received data between the working port and the protection port, wherein the switch criteria include Section Monitoring, Path Monitoring, and Tandem Connection Monitoring in OTN overhead on the working port monitored for associated protection switching, and wherein, when selected as switch criteria, the Path Monitoring and the Tandem Connection Monitoring are configured as transparent through intermediate nodes; and automatically setting up a switch mode for the two OTN network elements based on the selected switch criteria; wherein the linear OTN protection comprises Subnetwork Connection Protection with and without an Automatic Protection Switching protocol. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An Optical Transport Network (OTN) network, comprising:
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a first OTN network element; a second OTN network element communicatively coupled to the first OTN network element; and an interface to the first OTN network element and the second OTN network element; wherein the interface is configured to receive provisioning data for a working port and a protection port between the first OTN network element and the second OTN network element, the working port and the protection port providing linear OTN protection therebetween, and to receive one or more switch criteria between the working port and the protection port, wherein the switch criteria include Section Monitoring, Path Monitoring, and Tandem Connection Monitoring in OTN overhead on the working port monitored for associated protection switching, and wherein, when selected as switch criteria, the Path Monitoring and the Tandem Connection Monitoring are configured as transparent through intermediate nodes; wherein the first OTN network element and the second OTN network element are configured to provision the linear OTN protection based on the provisioning data and the switch criteria; wherein the first OTN network element and the second OTN network element are automatically configured to set up a switch mode based on the switch criteria; and wherein the linear OTN protection comprises Subnetwork Connection Protection with and without an Automatic Protection Switching protocol. - View Dependent Claims (15, 16, 17, 18, 19)
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20. An Optical Transport Network (OTN) network element, comprising:
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a plurality of ports configured to switch OTN connections therebetween; and a controller communicatively coupled to the plurality of ports; wherein the controller is configured to; provision a working port and a protection port between a first OTN network element and a second OTN network element based on a user request, the working port and the protection port providing linear OTN protection therebetween; determine one or more switch criteria between the working port and the protection port based on the user request, wherein the switch criteria include Section Monitoring, Path Monitoring, and Tandem Connection Monitoring in OTN overhead on the working port monitored for associated protection switching, and wherein, when selected as switch criteria, the Path Monitoring and the Tandem Connection Monitoring are configured as transparent through intermediate nodes; and automatically set up a switch mode based on the selected switch criteria; wherein the linear OTN protection comprises Subnetwork Connection Protection with and without an Automatic Protection Switching protocol.
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Specification