[138449] in North American Network Operators' Group
Re: A BGP issue?
daemon@ATHENA.MIT.EDU (Vadim Antonov)
Tue Mar 8 05:42:43 2011
From: Vadim Antonov <avg@kotovnik.com>
To: Hank Nussbacher <hank@efes.iucc.ac.il>
In-Reply-To: <5.1.0.14.2.20110308092120.035e89f8@efes.iucc.ac.il>
Date: Tue, 08 Mar 2011 02:41:33 -0800
Cc: North American Operators' Group <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Tue, 2011-03-08 at 09:25 +0200, Hank Nussbacher wrote:
> At 21:49 07/03/2011 -0500, Patrick W. Gilmore wrote:
> >On Mar 7, 2011, at 14:27, Greg Ihnen <os10rules@gmail.com> wrote:
> >
> > > I run a small network on a mission base in the Amazon jungle which is
> > fed by a satellite internet connection. We had an outage from Feb 25th to
> > the 28th where we had no connectivity with email, http/s, ftp, Skype
> > would indicate it's connected but even chatting failed, basically
> > everything stopped working except for ICMP. I could ping everywhere just
> > fine. I started doing traceroutes and they all were very odd, all not
> > reaching their destination and some hopping all over creation before
> > dying. But if I did traceroute with ICMP it worked fine. Does this
> > indicate our upstream (Bantel.net) had a BGP issue? Bantel blamed
> > Hughesnet which is the service they resell. I'm wondering what kind of
> > problem would let ping work fine but not any of the other protocols. It
> > also seems odd that I could traceroute via UDP part way to a destination
> > but then it would fail if the problem was my own provider. Thanks.
> > >
> > > If this is the wrong forum for this post I'm sorry and please just hit
> > delete. If this is the wrong forum but you'd be kind enough to share your
> > expertise please reply off-list. Thanks!
> >
> >Honestly, I would rate this as one of the most on-topic posts in a while.
>
> +1.
> When you have http working I suggest running:
> http://netalyzr.icsi.berkeley.edu/index.html
> to give you a benchmark of what your connection can do in the way of protocols.
>
> Regards,
> Hank
Greg - you may want try doing pings with large packets. You may have MTU
mismatch or some other problem with a link with lets small ICMP pings
through but mangles or discards large packets.
--vadim
