MAC Address not captured on switch ports

[spgsitsupport]

I would expect to see all devices MAC addresses displayed in switch interface, as per this

But I do not see on some ports like per this

And the only way I can find them is to ping IP

and then show arp

Which is not always ideal

Any ideas why? Is it a bug?

Procurve WB_16_05_0007 on HP 2920

I really cannot figure out the numbering of the firmware WB.16.0X

Seb

[gc_09]

Hi There,

Do these ports have port-security enabled ?

Also, even though this very behavior doesn't show up as a bug the software release WB.16.05.0007 is old and quite a few new releases have come up. You may consider doing an upgrade to a newer version and see if the issue gets eliminated.

[spgsitsupport]

Updated to WB_16_08_0003

Not much difference

port-security is at default (it was explicitly not touched)

[gc_09]

Can you share the configuration (sanitized)?

Or yourself can check the mac aging timer, if that is set to too low.

[spgsitsupport]

I do not have mac-age-time configured explicitly, so whatever defaults are

[gc_09]

At this point, I suggest you to log a case with Support team to investigate on the same.