unknown protocol drops

[collrbbrt]

Hi everyone.

I have a and interface showing:  185 unknown protocol drops.  on a cisco C9410R Switch.

what cause that and what's the fix ?

[MHM Cisco World]

I think it is cdp or dtp.

Disable these two on interface and checl count 

[collrbbrt]

Thank you, VIP Mentor, for the quick response. I really appreciate you.

I use vrf and it turned out I had 2 different Tools connected on same Switch but set to same IP.