bad switchs duplicate my ip

Posted by tacoen on Server Fault See other posts from Server Fault or by tacoen
Published on 2010-03-19T12:49:45Z Indexed on 2010/03/19 13:01 UTC
Read the original article Hit count: 234

Filed under:

ip

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switches

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mac-address

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prevention

I had a large area LAN. There were many switch and AP on it, then somehow I couldn't ping my servers, and it's said that the IP was duplicated. I use arpwatch and found out that one of the switch flip-flop-ing the IP. I isolated that troublesome switch using his mac-address.

But, since this a large area LAN... I doubt this will be the last cases. If there any software or hardware that I can use to prevent this kind of error?

Sorry for my bad English.

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