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Cisco Bug: CSCuo17293 - MAC sync issue on 3750 stack running SE5

Last Modified

Feb 23, 2018

Products (1)

  • Cisco Catalyst 3750-X Series Switches

Known Affected Releases


Description (partial)

mac address table is out of sync.

port-security is configured on all ports and when end host move.

Related Community Discussions

Attached devices not listed in MAC address table
Yesterday I attached three SiriusXM radios to a stack of 3750s. The radios were/are working great, on ports Gi5/0/24, 27, and 29. This morning I have a bunch of errors filling the log: Mar 24 08:13:34.198: %SW_MATM-4-MACFLAP_NOTIF: Host 76c2.5e30.1599 in vlan 110 is flapping between port Gi5/0/24 and port Gi5/0/29 Mar 24 08:13:54.842: %SW_MATM-4-MACFLAP_NOTIF: Host 76c2.5e30.1599 in vlan 110 is flapping between port Gi5/0/27 and port Gi5/0/24 Mar 24 08:14:24.318: %SW_MATM-4-MACFLAP_NOTIF: Host 76c2.5e30.1599 ...
Latest activity: Apr 06, 2015
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