This is on a Catalyst 6500, using a span port (traffic in both
directions). All ports are full duplex.
I'm doing management through a different, out of band NIC.
-----Original Message-----
From: Richard Urwin [mailto:richard@xxxxxxxxxxxxxxx]
Sent: Friday, January 23, 2004 9:45 AM
To: Temkin, David; ethereal-users@xxxxxxxxxxxx
Subject: Re: [Ethereal-users] Seeing drops on <5Mbit of traffic
On Friday 23 Jan 2004 2:20 pm, Temkin, David wrote:
> Hi all,
>
> I'm having an issue where I'm seeing drops when I'm doing
captures of
> around ~4-5 Mbit of traffic (mostly internet traffic between clients
> and proxy servers). The machine I'm running ethereal on is a very
> powerful box (Dual 3.0ghz Xeon's). It's running RedHat 9 (with a 2.6
> kernel (same issues under 2.4)), and I've tried it with a few
> different NICs. I'll generally see about a 5% drop rate.
>
> Anything anyone can think of that I should look at that I'm not
> checking? The compliation is fresh with a fresh libpcap as well.
> I'm doing the capture with Display during capture disabled & no name
> resolution...
Simple things first. What hub are you using, and do you have two NICs?
I'm thinking that the full-duplex aspect of ethernet might be biting
you.
--
Richard Urwin
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