ETHERNET SWITCH RING PROTECTION METHOD AND TRANSIT NODE Russian patent published in 2014 - IPC H04L12/437 

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to ring network protection, particularly an Ethernet Switch Ring (ESR) protection method and a transit node for ESR protection in case of multipoint failure. ESR protection method involves, after loop failure is recovered, the transit node on the loop entering a pre-up state if not receiving the loop failure protocol message within a set time; if the transit node is in the pre-up state and the loop has failed again, i.e., the transit node receives the loop failure protocol message in the pre-up state, the transit node opens the master and slave ports and refreshes the MAC address. The present invention also discloses an ESR transit node.

EFFECT: improved ring network protection.

9 cl, 7 dwg