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The Cidr Report
This is an auto-generated mail on Fri Sep 7 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A summary of the last weeks changes in terms of withdrawn and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 07Sep01
0) General Status
Table History
-------------
Date Prefixes
310801 103087
010901 103176
020901 103157
030901 103037
040901 103055
050901 103130
060901 103134
070901 103166
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: 11536
Number of ASes announcing only one prefix: 6868 (3907 cidr, 2961 classful)
Largest number of cidr routes: 847 announced by AS701
Largest number of classful routes: 1395 announced by AS701
1) Gains by aggregating at the origin AS level
--- 07Sep01 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS1221 1285 971 314 24.4% Telstra Pty Ltd
AS701 1395 1186 209 15.0% UUNET Technologies, Inc.
AS4151 294 165 129 43.9% USDA
AS577 313 192 121 38.7% Bell Advanced Communications Inc.
AS6595 173 61 112 64.7% 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 245 146 99 40.4% UUNET Technologies, Inc.
AS7018 756 660 96 12.7% AT&T
AS6429 194 102 92 47.4% AT&T Chile Internet S.A.
AS4755 214 127 87 40.7% Videsh Sanchar Nigam Ltd. Autonom
AS12302 96 26 70 72.9% MobiFon S.A.
AS724 230 162 68 29.6% DLA Systems Automation Center
AS4200 142 74 68 47.9% Apex Global Information Services,
AS7046 320 254 66 20.6% UUNET Technologies, Inc.
AS1239 468 402 66 14.1% Sprint
AS6471 127 62 65 51.2% ENTEL CHILE S.A.
AS209 301 242 59 19.6% Qwest
AS16758 63 6 57 90.5% IKON Office Solutions
AS19632 67 11 56 83.6% Metropolis Intercom S.A.
AS703 311 256 55 17.7% UUNET Technologies, Inc.
AS3464 148 93 55 37.2% Alabama SuperComputer Network
AS6413 65 13 52 80.0% Southern Online Systems, Inc.
AS226 145 93 52 35.9% Los Nettos
AS1 543 491 52 9.6% BBN Planet
AS17561 113 62 51 45.1% Internet service provision to Wes
AS4323 241 194 47 19.5% Time Warner Communications, Inc.
AS15290 238 192 46 19.3% AT&T Canada IES
AS5536 55 10 45 81.8% Internet Egypt Network
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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