Abstract: A method and system for buffer flush optimization in Ethernet ring protection (ERP) networks includes generating ERP control messages to include a sub-ring identifier (SUB RING ID) and a topology change notification sequence number (TCN#). When the ERP control messages are received with the sub-ring SUB RING ID and the TCN#, the recipient is enabled to disambiguate multiple redundant ERP control messages. Additionally, a do not flush attribute bit is set for subsequently sent ERP control messages.

Abstract: A method and system for buffer flush optimization in ERP networks includes generating improved ERP control messages to include a sub-ring identifier and a topology change notification sequence number. When the improved ERP control messages are received, the recipient is enabled to disambiguate multiple redundant ERP control messages. Additionally, a do not flush attribute bit is set for subsequently sent ERP control messages.

Abstract: A method and system for identifying the absence and presence of a ring protection link in Ethernet networks are disclosed. The method may include sending, by a node in a ring of an Ethernet network having a plurality of nodes and an RPL, an APS message. The method may further include receiving, by the node via the ring, the APS message and determining whether the node is an RPL owner node that controls the flow of traffic on the RPL. The method may further include, raising, when it is determined that the node is not an RPL owner node, an alarm indicating that the ring lacks a provisioned RPL owner node.