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3750G switch: Host in Vlan 1 flapping

munim5211
Level 1
Level 1

Hi,

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.

2 Replies 2

Prashanth Krishnappa
Cisco Employee
Cisco Employee

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.

Hi,

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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