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"show mac address" Nx7 Inconsistent

Hi guys

We have an a issue with a couple of Nx7 running vPC. When I enter the command "show mac address-table" looking for a specific MAC address, some times I see it and some times I dont. We are well aware of the ageing timers, but we are talking about seconds here:

Nexus-01-CO1# sho mac address-table dynamic | include 000f.4

* 3201     000f.4402.0835    dynamic   0          F    F  Po123

* 3201     000f.4402.08c7    dynamic   0          F    F  Po123

* 3201     000f.4402.09ca    dynamic   0          F    F  Po217

* 3201     000f.4402.09e1    dynamic   0          F    F  Po232

Nexus-01-CO1# sho mac address-table dynamic | include 000f.4

* 3201     000f.4402.0835    dynamic   0          F    F  Po123

Nexus-01-CO1# sho mac address-table dynamic | include 000f.4

* 3201     000f.4402.08c7    dynamic   0          F    F  Po123

Nexus-01-CO1# sho mac address-table dynamic | include 000f.4

Nexus-01-CO1# sho mac address-table dynamic | include 000f.4

Nexus-01-CO1# sho mac address-table dynamic | include 000f.4

Nexus-01-CO1# sho mac address-table dynamic | include 000f.4

* 3201     000f.4402.08c7    dynamic   0          F    F  Po123

Nexus-01-CO1# sho mac address-table dynamic | include 000f.4

Nexus-01-CO1# sho mac address-table dynamic | include 000f.4

* 3201     000f.4402.08c7    dynamic   0          F    F  Po123

This captured lasted at most 10 seconds, our aging time is 1800 (default).

Is this an expected behavior? Why are the entries disappearing?

Software

  BIOS:      version 3.22.0

  kickstart: version 5.1(3)

  system:    version 5.1(3)

Thanks in advance!

Omar M.

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