Patent ID: 8879401
Filing Date: 2014-11-04
Classification: H04L

Abstract:
1. A bridge node for use in a network, comprising: a receiver for receiving, from a source node in the network, multicast service frames having a service multicast destination address, measurement indicator frames having the service multicast destination address, and loss measurement OAM frames having an OAM destination address different to the service multicast destination address; a processor operatively connected to the receiver for performing loss measurements; and a memory operatively connected to the processor for storing a received frames counter; wherein the processor is arranged: to count the number of received service frames and record this using the received frames counter; when a loss measurement OAM frame is received, to recover a sent frames counter value from the loss measurement OAM frame, the sent frames counter indicating the number of frames sent by the source node; and when a measurement indicator frame corresponding to the loss measurement OAM frame is received, to calculate a number of lost or delayed service frames by comparing the received frames counter value with the sent frames counter value.