3750G switch: Host in Vlan 1 flapping

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Sep 29th, 2008
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I have some sun server cluster together and they are connected with cisco 3750 switch.IOS version Version 12.2(35)SE5.In console I have a message "005668: Jul 15 06:48:54: %SW_MATM-CLUSTER_MEMBER_1-4-MACFLAP_NOTIF: Host 0201.0000.0000 in vlan 1 is flapping between port Gi1/0/6 and port Gi1/0/18"

---How can I resolve it? Pls help.

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Prashanth Krishnappa Mon, 09/29/2008 - 06:18
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Appears switch is seeing packets coming in from MAC 0201.0000.0000 in vlan 1 on multiple ports and if it does, its normal to see this message on the switch.

You might want to double check your cluster configuration on the servers.

munim5211 Mon, 09/29/2008 - 23:25
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Thanks for Your reply.Then what should I do in the switch end.For this forwording loops create and after VPN the remote user can't able to get that server.Sometimes it pinging sometimes not.


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