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The Cidr Report
This is an auto-generated mail on Fri Feb 8 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A summary of the last weeks changes in terms of withdrawn and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 08Feb02
0) General Status
Table History
-------------
Date Prefixes
010202 105568
020202 105595
030202 105578
040202 105667
050202 105600
060202 105584
070202 105721
080202 105598
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: 12381
Number of ASes announcing only one prefix: 7537 (4280 cidr, 3257 classful)
Largest number of cidr routes: 717 announced by AS701
Largest number of classful routes: 1357 announced by AS701
1) Gains by aggregating at the origin AS level
--- 08Feb02 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS1221 1156 892 264 22.8% Telstra Pty Ltd
AS701 1357 1126 231 17.0% UUNET Technologies, Inc.
AS577 323 197 126 39.0% Bell Advanced Communications Inc.
AS16473 198 77 121 61.1% Bell South
AS7018 821 703 118 14.4% AT&T
AS4151 261 149 112 42.9% USDA
AS6595 168 60 108 64.3% DoD Education Activity Network As
AS17557 195 88 107 54.9% Pakistan Telecom
AS705 293 189 104 35.5% UUNET Technologies, Inc.
AS852 425 325 100 23.5% Telus Advanced Communications
AS7046 329 230 99 30.1% UUNET Technologies, Inc.
AS19632 94 9 85 90.4% Metropolis Intercom S.A.
AS2048 185 105 80 43.2% State of Louisiana
AS12302 110 31 79 71.8% MobiFon S.A.
AS1239 475 398 77 16.2% Sprint
AS4755 221 150 71 32.1% Videsh Sanchar Nigam Ltd. Autonom
AS4323 406 340 66 16.3% Time Warner Communications, Inc.
AS703 279 217 62 22.2% UUNET Technologies, Inc.
AS3464 157 97 60 38.2% Alabama SuperComputer Network
AS7303 107 49 58 54.2% Telecom Argentina Stet-France Tel
AS724 209 151 58 27.8% DLA Systems Automation Center
AS16758 63 6 57 90.5% IKON Office Solutions
AS3908 320 264 56 17.5% Supernet, Inc.
AS226 145 89 56 38.6% Los Nettos
AS13999 70 14 56 80.0% Mega Cable S.A. de C.V.
AS19834 63 8 55 87.3% NetForce, Inc.
AS702 654 600 54 8.3% UUNET Technologies, Inc.
AS1 491 438 53 10.8% BBN Planet
AS2149 308 256 52 16.9% Performance Systems, Inc.
AS9051 73 22 51 69.9% INCONET Autonomous System
Total 53855 42131 11724 21.8%
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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