Ethereal-users: [Ethereal-users] full duplex clarification and performance consideration

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From: Enoch Root <enokhroot@xxxxxxxxx>
Date: Thu, 1 May 2003 05:27:25 -0700 (PDT)
Hi there;

While searching archives for performance advices I
came accross a mail authored by Ronnie Sahlberg
(http://marc.theaimsgroup.com/?l=ethereal-users&m=104681304109441&w=2)
in which he points out that to capture traffic on a
100baseT full-duplex link one should use two cards for
capturing each direction of the flow.  Andreas Sikkema
asked
(http://marc.theaimsgroup.com/?l=ethereal-users&m=104685253408455&w=2)
how does one configure an interface to capture traffic
only in one direction but I couldn't find the answer
in the archives.  Could someone answer this question?

I'm planning to build a sniffer for a 155Mbit/s ATM
link, assuming a fully saturated link, does that mean
310Mbit/s full-duplex traffic, hence, roughly 40MB/s
disk write?

I'd be thankful if people with similar experiences
could share their findings, the performance issue
definitely deserves to be FAQ entry.

Thanks.


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