Albedo xGenius - Message Statistics

IEEE 1588 Analysis
231
9.2.3. Message Statistics
The Message statistics panel include counts of each PTP message type defined in
IEEE 1588-2008. This result panel includes statistics both about received and
transmitted (internally generated) packets.
There is one Message statistics panel for each test port. In case, that protocol
emulation or delay / jitter tests are not required, Port B can be used for message
statistics compilation. The procedure to display the message statistics is as follows:
1. From the Home panel, go to RESULTS,
The test port results panel is displayed.
2. Select either Port A or Port B to enter in the port specific results.
3. Enter in PTP to display results about the PTP protocol.
4. Go to Message statistics.
5. Press Run to start a new test and check the transmitted (TX) and received (RX)
values of Sync, Delay Request, Delay Response, Peer Delay Request, Peer
Delay Response, Follow-up, Peer Delay, Follow-up, Announce, Signaling, Man-
agement and Domain mismatch,
Table 9.6: IEEE 1588 Message Statistics
Result Description
Sync Accounts for the number of received (RX) and transmitted
(TX) Sync messages.
Sync messages are generated by PTP master clocks and
carry information about their clock frequency and phase. To
achieve accurate synchronization the PTP slave needs to
complement the information obtained from the Sync mes-
sages either with the Delay request-response or the Peer
delay mechanisms.
Delay Request Number of received (RX) and transmitted (TX) Delay
Request messages.
The Delay Request message is part of the Delay request-
response mechanism used to measure the two-way latency
between master and slave. The Delay Request message is
always generated by the PTP slave.
Delay Response Number of received (RX) and transmitted (TX) Delay
Response messages.
The Delay Response message is part of the Delay request-
response mechanism used to measure the two-way latency
between master and slave. The Delay Response message is
always generated by the PTP master as a reply to a Delay
request received from a slave.