Date: Mon, 27 May 2002 08:45:26 +0200 From: Raffaele Bruno <raffaele.bruno@guest.cnuce.cnr.it> Subject: Re: [tcptrace] Hardware duplicate? Message-id: <3CF1D607.1F826A2C@guest.cnuce.cnr.it>
Matt Muggeridge wrote:
> This occurs when tcptrace sees exactly the same packet more than once.
>
> My configuration was using a switched LAN, which normally bridges each port.
> So to run an indpendent sniffer requires port mirroring.
Thank you Matt for your answer. Now it is clear when a hardware duplicate
happens, but its not clear to me why it happens in my tests.
I am not considering a switched LAN, but a Wireless LAN operating in the ad hoc
mode. In my network there are 4 nodes, say A, B, C, D. I establish one TCP
connection between A and B and a second TCP connection between C and D. Via
tcpdump (without filtering anything) I capture all the TCP packets that arrives
to the network interface of each nodes.
In this configuration I have not mirroring, hence the reason why I receive two
identical packets is very confusing. Have you any idea?
Raffaele
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