Hello everyone!
I am looking for help configuring a 2 port NIC as boundary clock. The
PTP sync is coming in on one port and I want to forward it to the other
one. I got something working but the sync is not as good as I expected.
The sync on the receiving port looks like this:
ptp4l[775]: [325626.344]: rms 7 max 13 freq -33893 +/- 11 delay
170 +/- 1
ptp4l[775]: [325626.344]: rms 7 max 13 freq -33893 +/- 11 delay
170 +/- 1
ptp4l[775]: [325627.469]: rms 5 max 11 freq -33891 +/- 9 delay
170 +/- 1
ptp4l[775]: [325627.469]: rms 5 max 11 freq -33891 +/- 9 delay
170 +/- 1
ptp4l[775]: [325628.594]: rms 4 max 9 freq -33893 +/- 6 delay
169 +/- 1
ptp4l[775]: [325628.594]: rms 4 max 9 freq -33893 +/- 6 delay
169 +/- 1
ptp4l[775]: [325629.718]: rms 9 max 14 freq -33884 +/- 14 delay
170 +/- 1
ptp4l[775]: [325629.718]: rms 9 max 14 freq -33884 +/- 14 delay
170 +/- 1
ptp4l[775]: [325630.843]: rms 3 max 5 freq -33886 +/- 5 delay
170 +/- 1
ptp4l[775]: [325630.843]: rms 3 max 5 freq -33886 +/- 5 delay
170 +/- 1
Unfortunately, the sync on the server receiving the sync from the BC
looks like this:
ptp4l[3297.441]: master offset 42 s2 freq +9338 path
delay 319
ptp4l[3298.441]: master offset -10 s2 freq +9298 path
delay 319
ptp4l[3299.441]: master offset 19 s2 freq +9324 path
delay 319
ptp4l[3300.441]: master offset -23 s2 freq +9288 path
delay 321
ptp4l[3301.441]: master offset 11 s2 freq +9315 path
delay 321
ptp4l[3302.441]: master offset -22 s2 freq +9285 path
delay 322
ptp4l[3303.441]: master offset 6 s2 freq +9307 path
delay 322
Is there a way to improve the configuration? I found the
boundary_clock_jbod parameter but setting it to 1 didn't improve the
sync. Can someone provide a configuration for a simple BC setup with one
two-port NIC? What is the sync quality I can expect? Any help is
appreciated! Thanks in advance!
Best regards
Nils
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