Hi experts, is there a way to disable this alert?
Jun 26 13:08:19 MDT: %SW_MATM-4-MACFLAP_NOTIF: Host 0050.56ac.5e9f in vlan 265 is flapping between port Gi1/0/19 and port Gi1/0/17
It turned out to be some server behavior... It picks different link when sending packets..
Generally, I wouldn't recommend trying to disable this check since it's typically a clear indication of spanning tree loop.
What does the physical and virtual topology look like? The MAC address assigned is a VMWare address, so it's possible your virtual networking is not setup properly. For example, you may have multiple VM's sharing the same virtual MAC address.
I traced the cables. Both ports (reporting the flapping) are connected with one physical server box. That box has label something like ESXhost in the name so I assumed that it is VM which is causing the grief. I am trying to find right team to report this issue... Right now just want to know my option I have on the switch. Thanks
Not really an easy way to do it, since you'd have to write an EEM script to suppress the message. It still wouldn't avoid the CPU overhead anyway since the event is still being detected/observed, but just suppressing the error message.
The recommended action is usually disabling one of the ports. The persistant flapping will cause constant updates to the mac address tables and impact to the CPU with the errors. Return traffic will also flip flop between the two links.