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New Member

Host Flapping

I m getting following error in my L# switch. How to rectify the problem.. which leads my network slow..

%C4K_EBM-4-HOSTFLAPPING: Host 02:01:00:00:00:00 in vlan 1 is flapping between port Gi5/2 and port Gi 4/22

7 REPLIES
Silver

Re: Host Flapping

Hi!

this could mean that the same host mac address frames are being recieved on both the interfaces, pointing to a probable loop in the network.

Regards,

niranjan

New Member

Re: Host Flapping

How to rectify the problem...

Silver

Re: Host Flapping

what is the topology connected to both the posts? are those 2 ports indirectly connected through hub/switch?

New Member

Re: Host Flapping

Both gigabit ports are connected to L3 switch.

Gi/7 connected to my antivirus server. Gi/14 connected to fileserver.. .There is no load balance..

Re: Host Flapping

Hi,

Plz let us know what is connected to this switch ports.

also the running confg for both would be helpful.

regards,

pravin

New Member

Re: Host Flapping

I had a similar problem once. It was a couple servers that had Teamed NIC's. It wasn't configured properly on the broadcom software. If your network is slow it sounds like it could be a network loop.

Re: Host Flapping

It can also be possible if the servers connected to the switch ports are set for load balancing.

Regards,

Pravin

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