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host flapping...

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...

1 REPLY
Hall of Fame Super Bronze

Re: host flapping...

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.

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