[32507] in North American Network Operators' Group
The Cidr Report
daemon@ATHENA.MIT.EDU (Tony Bates)
Fri Nov 24 15:05:45 2000
Message-Id: <200011242000.MAA16661@lovefm.cisco.com>
To: nanog@merit.edu
Cc: tbates@cisco.com, eof-list@ripe.net, apops@apnic.net,
routing-wg@ripe.net
Date: Fri, 24 Nov 2000 12:00:03 -0800
From: Tony Bates <tbates@cisco.com>
Errors-To: owner-nanog-outgoing@merit.edu
This is an auto-generated mail on Fri Nov 24 12:00:00 PST 2000
It is not checked before it leaves my workstation. However, hopefully
you will find this report interesting and will take the time to look
through this to see if you can improve the amount of aggregation you
perform.
The report is split into sections:
0) General Status
List the route table history for the last week, list any possibly
bogus routes seen and give some status on ASes.
1) Gains by aggregating at the origin AS level
This lists the "Top 30" players who if they decided to aggregate
their announced classful prefixes at the origin AS level could
make a significant difference in the reduction of the current
size of the Internet routing table. This calculation does not
take into account the inclusion of holes when forming an aggregate
so it is possible even larger reduction should be possible.
2) Weekly Delta
A summary of the last weeks changes in terms of withdrawn and
added routes. Please note that this is only a snapshot but does
give some indication of ASes participating in CIDR. Clearly,
it is generally a good thing to see a large amont of withdrawls.
3) Interesting aggregates
Interesting here means not an aggregate made as a set of
classful routes.
Thanks to xara.net for giving me access to their routing tables once a
day.
Please send any comments about this report directly to me.
Check http://www.employees.org/~tbates/cidr-report.html for a daily
update of this report.
------------------------------------------------------------------------------
CIDR REPORT for 24Nov00
0) General Status
Table History
-------------
Date Prefixes
051100 90552
061100 90504
071100 90705
081100 91061
091100 91153
221100 92414
231100 92419
241100 92527
Check http://www.employees.org/~tbates/cidr.plot.html for a plot
of the table history.
Possible Bogus Routes
---------------------
*** Bogus 91.16.23.0/24 from AS11770
*** Bogus 219.219.219.0 from AS2563
AS Summary
----------
Number of ASes in routing system: 9183
Number of ASes announcing only one prefix: 5305 (2973 cidr, 2332 classful)
Largest number of cidr routes: 953 announced by AS701
Largest number of classful routes: 1360 announced by AS701
1) Gains by aggregating at the origin AS level
--- 24Nov00 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS2563 430 135 295 68.6% KoRean Education Network
AS1221 624 455 169 27.1% TELSTRA-AS
AS9269 163 51 112 68.7% Hong Kong CTI
AS701 1360 1248 112 8.2% Alternet
AS2609 126 17 109 86.5% EUnet-TN
AS7545 162 54 108 66.7% TPG Internet Pty Ltd
AS8013 459 355 104 22.7% PSINET-CA
AS271 209 112 97 46.4% BCnet Backbone
AS6595 156 62 94 60.3% DODDSEUR
AS4755 206 112 94 45.6% Videsh Sanchar Nigam Ltd. India
AS13999 94 6 88 93.6% UNKNOWN
AS7657 277 193 84 30.3% The Internet Group Limited
AS705 334 253 81 24.3% ALTERNET-AS
AS4293 343 262 81 23.6% Internal ASN for C&W
AS174 527 446 81 15.4% Performance Systems International
AS7496 102 25 77 75.5% Power Up
AS4151 286 209 77 26.9% USDA Internet Access Network
AS7046 323 248 75 23.2% UUNET-CUSTOMER
AS724 238 165 73 30.7% DLA-ASNBLOCK-AS
AS577 243 173 70 28.8% Bell Backbone
AS3908 239 169 70 29.3% Supernet, Inc.
AS7018 589 524 65 11.0% AT&T WorldNet Service Backbone
AS5106 101 37 64 63.4% AADS-COLUMBUS
AS3749 121 59 62 51.2% TECNET
AS226 168 106 62 36.9% USC/Information Sciences Institut
AS816 382 322 60 15.7% UUNET Canada (ASN-UUNETCA-AS4)
AS376 141 81 60 42.6% RISQ
AS3602 307 249 58 18.9% Sprint Canada Inc.
AS16758 63 6 57 90.5% UNKNOWN
AS11252 90 37 53 58.9% Idaho State University
For the rest of the previous weeks gain information please see
http://www.employees.org:80/~tbates/cidr-report.html
2) Weekly Delta
Please see
http://www.employees.org:80/~tbates/cidr-report.html
for this part of the report
3) Interesting aggregates
Please see
http://www.employees.org:80/~tbates/cidr-report.html
for this part of the report
