On Tue, 2011-05-31 at 22:11 -0700, Md. Jahangir Hossain wrote: ... > *Mar 1 12:43:54: %SW_MATM-4-MACFLAP_NOTIF: Host 0018.d17b.96d7 in > vlan 104 is flapping between port Gi1/0/28 and port Gi1/0/27
What's behind these ports? The switch is complaining that the MAC address keeps moving. It could be a loop, but most often (in my experience) it's "misconfigured" hosts, e.g. a host with dual NICs that's using some kind of load-sharing between ports. I also seem to remember seeing it when IP phones roam between wireless access points. >From the port configuration it must be something you trust not to bridge itself. A VMware server maybe? -- Peter _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
