Announcing long AS-sets tomorrow

Wed Jun 15 09:27:58 UTC 2005

Hi,

as part of our AS-set stuffing experiments (announced, including links 
to in-depth information, in [1]), we will be announcing unusually large 
AS-sets tomorrow, Thursday 16 June.

The prefixes involved will be 84.205.73.0/24 and 84.205.89.0/24, both 
orignating in AS12654. The AS-sets will consist of AS12654 repeated n 
times, thus the paths will look like 12654 {12654, 12654, ..., 12654}. 
No other AS numbers will be used. The values of n we will use are 25, 
50, 75 and 100.

The announcements are designed to discover how far large AS-sets are 
propagated, and thus how effective our techniques can be, in today's 
Internet with today's IPv4 operational practices. This is *not* a test 
to see if routers will fall over: we have successfully tested longer 
AS-sets in the lab on both Cisco and Juniper, and longer AS-paths and 
AS-sets have been observed in the wild [2,3]. See [1] for more 
information on the safety of these announcements.

The proposed schedule is as follows:

               84.205.73.0/24      84.205.89.0/24
14:00 UTC:   25-element AS-set   50-element AS-set
14:30 UTC:      withdrawal          withdrawal

16:00 UTC:   75-element AS-set  100-element AS-set
16:30 UTC:      withdrawal          withdrawal

If anyone should see a problem during the announcements, please contact 
me and I will take immediate action.

Regards,
Lorenzo

[1] http://www.merit.edu/mail.archives/nanog/2005-06/msg00210.html
[2] http://www.ripe.net/projects/ris/Talks/0101_RIPE38_AA/sld003.html
[3] http://www.ripe.net/maillists/ncc-archives/ris-users/2002/msg00044.html

-- 
lorenzo at ripe.net                  colitti at dia.uniroma3.it
www.ripe.net                www.dia.uniroma3.it/~compunet
RIPE NCC        Roma Tre Computer Networks research group