Ethereal-users: RE: [Ethereal-users] duplicated IP packets

Note: This archive is from the project's previous web site, ethereal.com. This list is no longer active.

Date: Tue, 22 Apr 2003 13:56:56 +0100
Alberto,

Are you spanning multiple ports through which each packets would traverse?

You may find this is a feature, not a bug. :-)  It happens to me all the
time when I span multiple ports on Cisco 6509's, I just need to be more
selective about where I capture my data. Other sniffers may automatically
remove these packets w/o telling you.

HTH

Alistair


> -----Original Message-----
> From: Alberto Ferrari [mailto:alberto.ferrari@xxxxxxxxxxxxxxxxx] 
> Sent: 18 April 2003 07:55
> To: ethereal-users@xxxxxxxxxxxx
> Subject: [Ethereal-users] duplicated IP packets
> 
> 
> Hello all,
> 	I'm sniffing a network trough a monitor port of a cisco 
> catalyst switch, and I saw that all the packet captured are 
> duplicated, another not free sniffer-like software that I 
> tested capture exactly the same situation.
> 
> 	Has anybody seen a situation like that ? How this can 
> happen ? It can be a misconfiguration of the switch ?
> 
> 	I'm using ethereal in Win2K with winpcap 2.3 but I also 
> try to donwgrade winpcap to a stable version version and the 
> problem is still there.
> 
> Alberto Ferrari
> alberto.ferrari@xxxxxxxxxxxxxxxxx
> 
> 
> Tracking #: D866C3C5C795BB41B48710A1B96940830826A29A
> 
> _______________________________________________
> Ethereal-users mailing list
> Ethereal-users@xxxxxxxxxxxx 
> http://www.ethereal.com/mailman/listinfo/ether> eal-users
> 


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