Frame-Loss Measurement

Frame-loss is measured by sending and receiving frames with frame-loss information between peer maintenance end points (MEPs).

Frame-loss ratio is defined as a percentage of the number of service frames not delivered divided by the total number of service frames during a defined time interval, where the number of service frames not delivered is the difference between the number of service frames arriving at the ingress Ethernet flow point and the number of service frames delivered at the egress Ethernet flow point in a point-to-point Ethernet connection (see Frame-Loss Ratio Formula).
Click to expand in new window
Frame-Loss Ratio Formula
To support frame-loss measurement, a MEP requires the following configuration information:

A maintenance intermediate point (MIP) is transparent to frames with frame-loss measurement information. Therefore MIPs do not require any information to support frame-loss measurement functionality.

There are two frame-loss measurement methods: