MAC Address Issue

[hipohoneywell]

I have received the following message forn a 3750 Switch:10366: Jul 31 09:21:28.444: %SW_MATM-4-MACFLAP_NOTIF: Host 00a0.f856.f438 in vlan 198 is flapping between port Fa2/0/21 and port Fa2/0/30

Please, any help on what it means and how it can be solved is highly appreciated.

Thanks in advance

[garytayl]

It is an indication that mac 00a0.f856.f438 is being learned on two different ports (Fa2/0/21 and Fa2/0/30). Trace down that mac address in order to determine if there is a loop or a misconfiguration.

Error message:

http://www.cisco.com/en/US/docs/switches/lan/catalyst3750/software/release/12.2_37_se/system/message/msg_desc.html#wp692746

[burleyman]

garytayl is correct and based on the MAC address it is something from Symbol Technologies (Motorola). could be a switch or something else that is connected to two ports.

Mike