[33065] in North American Network Operators' Group
The Cidr Report
daemon@ATHENA.MIT.EDU (Tony Bates)
Fri Dec 22 15:06:25 2000
Message-Id: <200012222000.MAA14413@lovefm.cisco.com>
To: nanog@merit.edu
Cc: tbates@cisco.com, eof-list@ripe.net, apops@apnic.net,
routing-wg@ripe.net
Date: Fri, 22 Dec 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 Dec 22 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A summary of the last weeks changes in terms of withdrawn and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 22Dec00
0) General Status
Table History
-------------
Date Prefixes
151200 95822
161200 95919
171200 95802
181200 95790
191200 96081
201200 96409
211200 96198
221200 96064
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: 9441
Number of ASes announcing only one prefix: 5499 (3068 cidr, 2431 classful)
Largest number of cidr routes: 1099 announced by AS705
Largest number of classful routes: 1656 announced by AS1221
1) Gains by aggregating at the origin AS level
--- 22Dec00 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS1221 1656 1216 440 26.6% TELSTRA-AS
AS2563 239 72 167 69.9% KoRean Education Network
AS701 1572 1417 155 9.9% Alternet
AS271 284 131 153 53.9% BCnet Backbone
AS9269 168 46 122 72.6% Hong Kong CTI
AS7545 189 67 122 64.6% TPG Internet Pty Ltd
AS8013 450 345 105 23.3% PSINET-CA
AS6595 166 64 102 61.4% DODDSEUR
AS7657 255 164 91 35.7% The Internet Group Limited
AS4755 215 125 90 41.9% Videsh Sanchar Nigam Ltd. India
AS705 328 244 84 25.6% ALTERNET-AS
AS4293 341 260 81 23.8% Internal ASN for C&W
AS174 534 453 81 15.2% Performance Systems International
AS7496 100 22 78 78.0% Power Up
AS7046 333 256 77 23.1% UUNET-CUSTOMER
AS1727 183 107 76 41.5% MRMS-WEST
AS4151 283 208 75 26.5% USDA Internet Access Network
AS724 245 172 73 29.8% DLA-ASNBLOCK-AS
AS3908 234 162 72 30.8% Supernet, Inc.
AS1942 137 65 72 52.6% FR-CICG-GRENOBLE
AS13999 79 7 72 91.1% UNKNOWN
AS577 240 170 70 29.2% Bell Backbone
AS7018 590 526 64 10.8% AT&T WorldNet Service Backbone
AS5106 101 37 64 63.4% AADS-COLUMBUS
AS3749 123 60 63 51.2% TECNET
AS226 168 105 63 37.5% USC/Information Sciences Institut
AS2548 370 310 60 16.2% DIGEX-AS
AS3602 306 247 59 19.3% Sprint Canada Inc.
AS16758 63 6 57 90.5% UNKNOWN
AS376 133 77 56 42.1% RISQ
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
