[192524] in North American Network Operators' Group
Re: Help interpret a strange traceroute?
daemon@ATHENA.MIT.EDU (William Herrin)
Mon Oct 31 15:43:03 2016
X-Original-To: nanog@nanog.org
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In-Reply-To: <346d50edd479d7c16a669bd3c02e755b@mailbox.fastserv.com>
From: William Herrin <bill@herrin.us>
Date: Mon, 31 Oct 2016 15:42:33 -0400
To: amps@djlab.com
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
On Mon, Oct 31, 2016 at 3:33 PM, Randy <amps@djlab.com> wrote:
> Any idea how a traceroute (into my network) could end up this fubar'd?
> Discovered this wierd routing while investigating horrendously slow speeds
> (albeit no packet loss) to a particular ISP abroad.
Hi Randy,
This is per-packet load balancing. In the forward path the alternates
are different lengths but the traceroute stops as soon as at least one
of the paths reaches the destination.
The return path is also engaged in per-packet load balancing but the
paths are all the same length.
Regards,
Bill Herrin
--
William Herrin ................ herrin@dirtside.com bill@herrin.us
Owner, Dirtside Systems ......... Web: <http://www.dirtside.com/>
