SYSTEM AND METHOD OF MULTI-NODAL APS CONTROL PROTOCOL SIGNALLING

摘要

A system and method for providing APS (automatic protection switching) redundant pair control protocol signaling for multi-nodal APS (MN- APS) is provided. Periodic liveliness messages are exchanged between each node of a redundant pair. Each liveliness message contains an IHY (I heard you) message which indicates whether or not the sender of the liveliness message received within a duration of a hold time a previously transmitted liveliness message from the recipient. When more than one MN-APS group is configured between two redundant nodes, liveliness messages are bundled together to reduce processing loads.