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The Cidr Report
This is an auto-generated mail on Fri Jan 25 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A summary of the last weeks changes in terms of withdrawn and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 25Jan02
0) General Status
Table History
-------------
Date Prefixes
180102 104688
190102 104682
200102 104656
210102 104633
220102 104637
230102 104624
240102 104664
250102 104855
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: 12293
Number of ASes announcing only one prefix: 7436 (4212 cidr, 3224 classful)
Largest number of cidr routes: 716 announced by AS701
Largest number of classful routes: 1364 announced by AS701
1) Gains by aggregating at the origin AS level
--- 25Jan02 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS1221 1172 901 271 23.1% Telstra Pty Ltd
AS701 1364 1130 234 17.2% UUNET Technologies, Inc.
AS4151 288 156 132 45.8% USDA
AS577 320 196 124 38.8% Bell Advanced Communications Inc.
AS16473 198 77 121 61.1% Bell South
AS7018 815 697 118 14.5% AT&T
AS6595 172 61 111 64.5% DoD Education Activity Network As
AS705 288 184 104 36.1% UUNET Technologies, Inc.
AS852 383 286 97 25.3% Telus Advanced Communications
AS17557 184 87 97 52.7% Pakistan Telecom
AS7046 313 227 86 27.5% UUNET Technologies, Inc.
AS19632 95 13 82 86.3% Metropolis Intercom S.A.
AS2048 185 105 80 43.2% State of Louisiana
AS12302 111 32 79 71.2% MobiFon S.A.
AS1239 469 391 78 16.6% Sprint
AS4755 223 151 72 32.3% Videsh Sanchar Nigam Ltd. Autonom
AS703 275 213 62 22.5% UUNET Technologies, Inc.
AS3464 159 97 62 39.0% Alabama SuperComputer Network
AS724 214 155 59 27.6% DLA Systems Automation Center
AS226 146 89 57 39.0% Los Nettos
AS16758 63 6 57 90.5% IKON Office Solutions
AS702 657 601 56 8.5% UUNET Technologies, Inc.
AS7303 107 52 55 51.4% Telecom Argentina Stet-France Tel
AS4323 383 328 55 14.4% Time Warner Communications, Inc.
AS3908 320 265 55 17.2% Supernet, Inc.
AS19834 63 8 55 87.3% NetForce, Inc.
AS4200 104 50 54 51.9% Apex Global Information Services,
AS2149 313 260 53 16.9% Performance Systems, Inc.
AS13999 66 14 52 78.8% Mega Cable S.A. de C.V.
AS1 492 440 52 10.6% BBN Planet
Total 53762 42007 11755 21.9%
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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