host flapping...

[mohsin.khan]

I get

"Host [mac_addrs] in vlan [vlan_id] is flapping between port Gi [port_num] and Gi [another_port_num]"

as the syslog alerts.. Whats the reason and how can this be avoided...

[Edison Ortiz]

The switch is detecting the same MAC address being sourced from different switchports.

Often, that's a behavior seen when you configure teaming on a server or a switch.

Please examine the switchports that are reporting the problem and see if the device connected to them is the same, then post back with your findings.