FAULT LOCALIZATION USING TANDEM CONNECTION MONITORS IN OPTICAL TRANSPORT NETWORK

摘要

An Optical Transport Network (OTN) fault localization method, an iterative OTN fault localization method, and an OTN network use OTN tandem connection monitors operating in a “Monitor” mode to provide fault localization. The methods and network use TCMs for fault localization that can be performed manually or automatically to isolate a fault in a multi-domain OTN network to a particular link, switching fabric, or transport function. Additionally, a roles-based assignment scheme is presented for automatically assigning TCM levels between domains and links in multi-domain OTN networks. The fault localization methods enable fault localization in an automated and non-intrusive manner.

主权项

1. An Optical Transport Network (OTN) fault localization method, comprising:
localizing a fault in a multi-domain OTN network to either an inter-domain link (IrDL) or an administrative domain in the multi-domain OTN network based on monitoring endpoint tandem connection monitors; responsive to the fault being in the administrative domain, localizing the fault within the administrative domain through a first iterative process with a first fault localization tandem connection monitor within the administrative domain; and responsive to the fault being in the inter-domain link (IrDL), localizing the fault to a network element or a link within the inter-domain link (IrDL) utilizing a second iterative process with a second fault localization tandem connection monitor within the inter-domain link.