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The Cidr Report
This is an auto-generated mail on Fri Aug 31 23:00:00 PDT 2001
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A summary of the last weeks changes in terms of withdrawn and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 31Aug01
0) General Status
Table History
-------------
Date Prefixes
240801 103170
250801 103304
260801 103160
270801 102884
280801 103189
290801 103298
300801 103283
310801 103087
Check http://www.employees.org/~tbates/cidr.plot.html for a plot
of the table history.
Possible Bogus Routes
---------------------
*** Bogus 82.105.0.0/16 from AS3269
*** Bogus 82.105.128.0/17 from AS3269
AS Summary
----------
Number of ASes in routing system: 11502
Number of ASes announcing only one prefix: 6853 (3906 cidr, 2947 classful)
Largest number of cidr routes: 849 announced by AS701
Largest number of classful routes: 1398 announced by AS701
1) Gains by aggregating at the origin AS level
--- 31Aug01 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS1221 1270 964 306 24.1% Telstra Pty Ltd
AS701 1398 1187 211 15.1% UUNET Technologies, Inc.
AS4151 295 166 129 43.7% USDA
AS577 314 193 121 38.5% Bell Advanced Communications Inc.
AS6595 169 60 109 64.5% DoD Education Activity Network As
AS4293 381 272 109 28.6% Cable & Wireless USA
AS16473 177 74 103 58.2% Bell South
AS13999 113 11 102 90.3% Mega Cable S.A. de C.V.
AS705 244 145 99 40.6% UUNET Technologies, Inc.
AS6429 198 104 94 47.5% AT&T Chile Internet S.A.
AS7018 756 663 93 12.3% AT&T
AS4755 212 125 87 41.0% Videsh Sanchar Nigam Ltd. Autonom
AS12302 96 26 70 72.9% MobiFon S.A.
AS4200 150 82 68 45.3% Apex Global Information Services,
AS7046 323 257 66 20.4% UUNET Technologies, Inc.
AS6471 128 62 66 51.6% ENTEL CHILE S.A.
AS1239 464 399 65 14.0% Sprint
AS724 209 149 60 28.7% DLA Systems Automation Center
AS16758 63 6 57 90.5% IKON Office Solutions
AS703 310 255 55 17.7% UUNET Technologies, Inc.
AS3908 321 266 55 17.1% Supernet, Inc.
AS3464 144 91 53 36.8% Alabama SuperComputer Network
AS209 289 236 53 18.3% Qwest
AS6413 65 13 52 80.0% Southern Online Systems, Inc.
AS226 145 93 52 35.9% Los Nettos
AS19632 60 9 51 85.0% Metropolis Intercom S.A.
AS17561 113 62 51 45.1% Internet service provision to Wes
AS1 545 494 51 9.4% BBN Planet
AS17557 110 62 48 43.6% Pakistan Telecom
AS4323 241 194 47 19.5% Time Warner Communications, Inc.
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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