[4762] in North American Network Operators' Group
Re: ATM Traceroute middle packet loss?
daemon@ATHENA.MIT.EDU (Larry J. Plato)
Fri Sep 27 20:57:05 1996
From: "Larry J. Plato" <ljp@ans.net>
To: indus@professionals.com (Sanjay Dani)
Date: Sat, 28 Sep 1996 00:54:12 +0000 (GMT)
Cc: nanog@merit.edu, madison@acsi.net
In-Reply-To: <199609280031.RAA27135@osprey.webpros.com> from "Sanjay Dani" at Sep 27, 96 05:31:25 pm
This sounds a lot like the problem last year in MAE-East before
they upgraded to FDDI. A bug in *many* hardware implementations
dropped packets if the interpacket arrival time was too small (even
though the inbterpacket spacing was within spec.) I don't recall
anyone ever fixing the problem tho' It even affected several
sniffers so they would not see the packets, and hence not record
the drop....
Larry Plato
>
>
> > No, it's not a Sun issue, it drops every other packet only if I got over
> > the ATM Backbone. I can trace to another router, a ATM Switch, A CSU
> > panel, anything and I get the same dropped packet.
> > I did further testing, and it is every other packet, not just the middle one.
>
> Looks like Solaris has the same bug as the ATM link you
> described. I see every other packet dropped by a
> Solaris box on my ethernet but not by a linux box
> on the same ethernet.
>
> Sanjay.
>
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