Method and system for protecting traffic of a plurality of work ODUs over a protect ODU

摘要

The various embodiments herein provide a method and system for protecting multiple work ODU failures using a higher capacity protect ODU in an Optical Transport Network. The method for protecting multiple work ODU failures in an Optical Transport Network comprising steps of detecting signal failures in at least one of a plurality of work ODUs, requesting for release of one or more time-slots for a defective work ODU and allocating the one or more time-slots of a low priority traffic from the protect ODU in an incremental manner of priority. The method apply a TPN based policy for defining lower ODUs, performs handshaking between the transmit and downstream ends using the protocol provided, defines the role and behavior of the various system components and the service requests and performs an automatic lockout of protection for the work ODU in which an UDI alarm is present.

主权项

1. A method for protecting traffic of a plurality of work ODUs over a protect ODU (Optical Channel Data Units), said method comprising the steps of:
detecting defects in at least one of a plurality of work ODUs; requesting for release of one or more time-slots for a defective work ODU; allocating the one or more time-slots from the protect ODU based on the request, wherein the one or more time slots are allocated in an incremental manner of priority; inputting a signal status of at least one of the plurality of work ODUs and the protect ODU; analyzing the availability of time-slots; dropping at least one of a plurality of low priority extra traffic client entities and protected work ODUs when free time-slots are not available; providing a list of free time slots for protecting the defective work ODU; and switching the traffic from the protect ODU for protecting the defective work ODU; signaling a bridge release request for the dropped low priority extra traffic client entities and the protected work ODUs; releasing a bridged traffic for the extra traffic client entities and the protected work ODUs on receiving the bridge release request; providing a bridge release indication; caching a signaling information on receiving the bridge release indication; signaling a bridge engage request to bridge traffic for the defective work ODU; requesting for a grant of free time-slots for the defective work ODU for which the bridge engage request is received; bridging the traffic for the defective work ODU on the protect ODU; signaling the bridging of traffic by sending a bridge engage indication; and switching the traffic of the defective work ODU from the protect ODU on receiving the bridge engage indication.