Throughput Testing
Mingoa's hardware supports Loopback messaging (LBM/LBR) as defined by IEEE 802.1ag and ITU-Y.1731. Loopback messages can be used to verify and locate faults, to measure SLA performance and to measure throughput.
Faults are signalled when a loopback response (LBR) fails to arrive at the loopback originator
within a configurable timeout period. In addition, a fault is signalled if there is an
unexpected Sequence Number received in the loopback response.
Frame Loss, Frame Delay and Frame Delay Variation can be measured using loopback messages
as defined by MEF 25. Frame Loss is calculated based on the number of loopback messages
that are lost. In contrast, Frame Loss using CCM/LMM/LMR measures the number of data packets
that are lost, and so is more accurate.
Mingoa's hardware has a configurable rate for loopback messages. This rate can run up to full
1G line rate. In addition, the length and contents (including TLVs) of the loopback message
are fully configurable. These features enable throughput testing on the monitored service at
any rate and with any payload.
The hardware also supports multicast loopback messaging. The resulting loopback response(s)
allow detection of all the peer monitoring points in the service.