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Cisco Bug: CSCvv85168 - MAC address not learned when "switchport mode private-vlan trunk" applied under the interface

Last Modified

Oct 08, 2020

Products (1)

  • Cisco Catalyst 9400 Series Switches

Known Affected Releases

17.3.1

Description (partial)

Symptom:
after we applied the command "switchport mode private-vlan trunk" under the interface, we cannot see MAC address learned on this interface

Switch#sh mac address-table interface g1/0/1
          Mac Address Table
-------------------------------------------

Vlan    Mac Address       Type        Ports
----    -----------       --------    -----

Conditions:
running the version 17.3.1, as "switchport mode private-vlan trunk" is not supported in previous versions, even its available in CLI.
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