I have seen asymmetric routing occurring with certain ISP's at the exchanges (and it
is still going on). I have always assumed that was due to capacity issues. If it's for
political reasons, I (We) would certainly like to hear from any ISP's who would like
to arrange private peering at APE or WIX.
From: Andy Linton [mailto:email@example.com]
Sent: Wednesday, 24 September 2008 8:45 a.m.
Subject: Re: [nznog] Solarix - Peering on APE
I sent this to Craig directly when I wanted you all to see it (:-)
On Wed, Sep 24, 2008 at 8:43 AM, Andy Linton <asjl(a)lpnz.org> wrote:
On Tue, Sep 23, 2008 at 7:35 PM, Craig Spiers
We are now peering on APE. Those wishing to peer with us directly, please
contact me off list.
I would strongly suggest it.. as it appears that most people seem to have an
advertise all, accept none policy in regards to the route servers.
If that's the case then it's kind of disappointing. Arranging to have
assymetric routing would seem to rather defeat the object of peering
with the route servers.
All the route servers operate a strong policy of only importing the
routes that peers have said they'll advertise and exporting the union
of those sets minus default and a list of bogons as defined on the
Team Cymru website.
It's quite easy to look at what the route servers are importing and
exporting wrt a particular AS on the Looking Glass page at
Of course that doesn't tell anyone if a particular peer is running an
"accept none" policy. You'd have to wonder if anyone who does this
will make a better fist of getting a bilateral peering set up any
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