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If it happens again, you should be able to disable the port on your
side and then re-enable it after a minute and the error state should
clear.

On Mon, Sep 21, 2020 at 12:24 PM Doug McIntyre <[log in to unmask]> wrote:
>
> On Mon, Sep 21, 2020 at 12:21:35PM -0500, Todd Mueller wrote:
> >Could someone please check the MICE port for Velocity Telephone, I saw it go
> >down about 15 minutes ago.
> >
> >I suspect it shut down because there was more than 1 MAC address coming in.
> >I noticed the MAC address for a layer 2 interface from one of our switches
> >showing up in the corresponding VLAN momentarily for some reason, but it is
> >gone now.
>
> Yes, it was a MAC address security violation. I assume it'll be fine
> to post it, so you can find what one is causing you grief.
>
> Sep 21 12:02:46 core-sw0 PortSec: %PORTSECURITY-2-PSECURE_VIOLATION: Security violation occurred, caused by MAC address 64:9e:f3:ec:b9:73 on vlan 1 interface Ethernet4/21.
> Sep 21 12:02:46 core-sw0 Ebra: %ETH-4-ERRDISABLE: portsec error detected on Ethernet4/21.
> Sep 21 12:02:46 core-sw0 Ebra: %LINEPROTO-5-UPDOWN: Line protocol on Interface Ethernet4/21 (15250 - Velocity Telephone), changed state to down
> Sep 21 12:02:46 core-sw0 Stp: %SPANTREE-6-INTERFACE_DEL: Interface Ethernet4/21 has been removed from instance Vl1
>
> I cleared the error from the port.



-- 
Jay Hanke, President
South Front Networks
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Phone  612-204-0000