[138423] in North American Network Operators' Group

home help back first fref pref prev next nref lref last post

Re: About the different causes of multiple origin ASN(MOAS) problem

daemon@ATHENA.MIT.EDU (Dobbins, Roland)
Mon Mar 7 20:03:14 2011

From: "Dobbins, Roland" <rdobbins@arbor.net>
To: nanog group <nanog@nanog.org>
Date: Tue, 8 Mar 2011 01:02:19 +0000
In-Reply-To: <AANLkTi=RpzYDhcroH2043uiA7XDa0Apo2cHhu6y6XC6V@mail.gmail.com>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org


On Mar 8, 2011, at 1:32 AM, Yaoqing(Joey) Liu wrote:

> I'm trying to find all causes of multiple origin AS problem(MOAS) as
> follows, but not sure if it's complete.=20

1.	MOAS isn't necessarily a 'problem'; it's fairly common, these days, and =
has been for quite some time.  The actual problem is the inability to deter=
mine when it's intentional and not evil, vs. unintentional or intentional a=
nd evil.

2.	There's already a fair body of work on this topic, as a Web search for "=
multiple origin as" reveals.  Check the NANOG archives for Lixia's preso, a=
mong others.

-----------------------------------------------------------------------
Roland Dobbins <rdobbins@arbor.net> // <http://www.arbornetworks.com>

		The basis of optimism is sheer terror.

			  -- Oscar Wilde



home help back first fref pref prev next nref lref last post