ARP storm on 3750

Unanswered Question
Feb 1st, 2010
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We are getting extremely poor performance out of a 3570E and when I put a sniffer on it I can see that almost all the traffic is ARP requests sourced from the MAC address of the VLAN interface itself.

The last topology change on the spanning tree for all of my VLANS (4 of them) was 3 days ago.

This switch is in a DR location and is stacked with 2 others with a total of 42 servers connected to workstations.

Anyone come across this before?


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Reza Sharifi Mon, 02/01/2010 - 10:03
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Hi Brian,

Do you see any error messages in the logs?

Can you post "sh run" and "sh process cpu sort"?



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