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The Cidr Report
This is an auto-generated mail on Fri Aug 23 23:00:00 PDT 2002
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.
Check http://www.employees.org/~tbates/cidr-report.html for a daily
update of this report.
NEW: Check http://www.employees.org/~tbates/cidr-report-region.html for
the regional version of this report.
NEW: Check http://www.employees.org/~tbates/autnums.html for a complete
list of autonomous system number to name mappings as used by the CIDR-Report.
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A summary of the last weeks changes in terms of withdrawn and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 amount of withdrawls.
3) Interesting aggregates
Interesting here means not an aggregate made as a set of
classful routes.
Thanks to GX Networks for giving me access to their routing tables once a
day.
Please send any comments about this report directly to CIDR Report <cidr-report at cisco.com>.
------------------------------------------------------------------------------
CIDR REPORT for 23Aug02
0) General Status
Table History
-------------
Date Prefixes
160802 112263
170802 112395
180802 112126
190802 112372
200802 112331
210802 112026
220802 112220
230802 112433
Check http://www.employees.org/~tbates/cidr.plot.html for a plot
of the table history.
Possible Bogus Routes
---------------------
AS Summary
----------
Number of ASes in routing system: 13481
Number of ASes announcing only one prefix: 8184 (4604 cidr, 3580 classful)
Largest number of cidr routes: 736 announced by AS3908
Largest number of classful routes: 1196 announced by AS701
1) Gains by aggregating at the origin AS level
--- 23Aug02 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS701 1196 967 229 19.1% UUNET Technologies, Inc.
AS1221 1039 822 217 20.9% Telstra Pty Ltd
AS17557 268 94 174 64.9% Pakistan Telecom
AS6595 224 60 164 73.2% DoD Education Activity Network As
AS852 522 379 143 27.4% Telus Advanced Communications
AS16473 196 75 121 61.7% Bell South
AS7018 774 662 112 14.5% AT&T
AS4151 253 156 97 38.3% USDA
AS19632 99 5 94 94.9% Metropolis Intercom S.A.
AS12302 122 29 93 76.2% MobiFon S.A.
AS16814 105 20 85 81.0% NSS, S.A.
AS1239 501 419 82 16.4% Sprint
AS226 170 89 81 47.6% Los Nettos
AS4755 202 126 76 37.6% Videsh Sanchar Nigam Ltd. Autonom
AS2048 178 103 75 42.1% State of Louisiana
AS577 266 193 73 27.4% Bell Advanced Communications Inc.
AS7046 291 221 70 24.1% UUNET Technologies, Inc.
AS3464 163 103 60 36.8% Alabama SuperComputer Network
AS19834 64 4 60 93.8% NetForce, Inc.
AS10620 85 25 60 70.6% TVCABLE BOGOTA
AS724 207 148 59 28.5% DLA Systems Automation Center
AS6535 70 13 57 81.4% Chilesat Servicios Empresariales
AS5515 243 186 57 23.5% Sonera Finland Autonomous System
AS16758 63 6 57 90.5% IKON Office Solutions
AS3908 285 230 55 19.3% Supernet, Inc.
AS209 289 234 55 19.0% Qwest
AS9051 82 28 54 65.9% INCONET Autonomous System
AS9498 84 31 53 63.1% BHARTI BT INTERNET LTD.
AS3233 105 53 52 49.5% RNC - Romanian Natioanal R&D Netw
AS703 273 223 50 18.3% UUNET Technologies, Inc.
Total 54880 42313 12567 22.9%
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
-----
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