Ethereal-users: RE: [Ethereal-users] Ethereal and erronous ethernet frames

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From: "McGlinchy, Alistair" <Alistair.McGlinchy@xxxxxxxxxxxxxxxxxxxxx>
Date: Wed, 14 Apr 2004 16:44:40 +0100
Title: Message
Ian,
 
You can't use ethereal / libpcap to capture frames that have already been discarded by your ethernet card (or switch for that matter). 
 
You can get this information with an RMON1 enabled switch or hub; the etherStatsTable contains all this information.
 
Cheers
 
Alistair
 
 
-----Original Message-----
From: ethereal-users-bounces@xxxxxxxxxxxx [mailto:ethereal-users-bounces@xxxxxxxxxxxx] On Behalf Of Jan Allman
Sent: 14 April 2004 09:31
To: ethereal-users@xxxxxxxxxxxx
Subject: [Ethereal-users] Ethereal and erronous ethernet frames

I want to be able to capture erronous Ethernet capture frames (jabbers, CRC errors, etc) to detect if a network card is failing. I have Ethereal in both Linux and Win32.
- Do you know where I can obtain a version of libpcap that will feed erronous frames to Ethereal?
- Do you know if there is a mechanism by which you can bypass the filtering mehanism of NDIS, libpcap filtering.
 
Any help is greatly appreciated.
 
Ian J. Allman


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