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The Cidr Report
This is an auto-generated mail on Fri Feb 22 23:00:00 PST 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A summary of the last weeks changes in terms of withdrawn and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 amont 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 22Feb02
0) General Status
Table History
-------------
Date Prefixes
150202 105693
160202 105736
170202 105803
180202 105879
190202 105989
200202 106186
210202 105821
220202 106236
Check http://www.employees.org/~tbates/cidr.plot.html for a plot
of the table history.
Possible Bogus Routes
---------------------
*** Bogus 96.0.0.0/20 from AS3549
AS Summary
----------
Number of ASes in routing system: 12451
Number of ASes announcing only one prefix: 7566 (4299 cidr, 3267 classful)
Largest number of cidr routes: 728 announced by AS701
Largest number of classful routes: 1369 announced by AS701
1) Gains by aggregating at the origin AS level
--- 22Feb02 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS1221 1150 886 264 23.0% Telstra Pty Ltd
AS701 1369 1125 244 17.8% UUNET Technologies, Inc.
AS17557 224 96 128 57.1% Pakistan Telecom
AS7018 836 712 124 14.8% AT&T
AS577 320 197 123 38.4% Bell Advanced Communications Inc.
AS16473 198 77 121 61.1% Bell South
AS4151 254 149 105 41.3% USDA
AS705 309 205 104 33.7% UUNET Technologies, Inc.
AS852 425 324 101 23.8% Telus Advanced Communications
AS6595 150 55 95 63.3% DoD Education Activity Network As
AS7046 324 239 85 26.2% UUNET Technologies, Inc.
AS19632 94 9 85 90.4% Metropolis Intercom S.A.
AS2048 186 105 81 43.5% State of Louisiana
AS12302 110 31 79 71.8% MobiFon S.A.
AS1239 482 405 77 16.0% Sprint
AS4323 432 356 76 17.6% Time Warner Communications, Inc.
AS4755 221 147 74 33.5% Videsh Sanchar Nigam Ltd. Autonom
AS3908 339 271 68 20.1% Supernet, Inc.
AS3464 157 97 60 38.2% Alabama SuperComputer Network
AS724 215 156 59 27.4% DLA Systems Automation Center
AS7303 106 48 58 54.7% Telecom Argentina Stet-France Tel
AS16758 63 6 57 90.5% IKON Office Solutions
AS226 145 89 56 38.6% Los Nettos
AS19834 63 8 55 87.3% NetForce, Inc.
AS10620 77 22 55 71.4% TVCABLE BOGOTA
AS9051 75 22 53 70.7% INCONET Autonomous System
AS702 621 568 53 8.5% UUNET Technologies, Inc.
AS703 271 219 52 19.2% UUNET Technologies, Inc.
AS2149 305 253 52 17.0% Performance Systems, Inc.
AS209 300 248 52 17.3% Qwest
Total 53958 42075 11883 22.0%
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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