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The Cidr Report
This is an auto-generated mail on Fri Oct 12 23:00:02 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A summary of the last weeks changes in terms of withdrawn and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 12Oct01
0) General Status
Table History
-------------
Date Prefixes
051001 104449
061001 104665
071001 104597
081001 104752
091001 104769
101001 104817
111001 105289
121001 104773
Check http://www.employees.org/~tbates/cidr.plot.html for a plot
of the table history.
Possible Bogus Routes
---------------------
*** Bogus 1.0.0.0 from AS7623
AS Summary
----------
Number of ASes in routing system: 11764
Number of ASes announcing only one prefix: 7013 (3982 cidr, 3031 classful)
Largest number of cidr routes: 872 announced by AS701
Largest number of classful routes: 1406 announced by AS701
1) Gains by aggregating at the origin AS level
--- 12Oct01 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS1221 1232 947 285 23.1% Telstra Pty Ltd
AS701 1406 1185 221 15.7% UUNET Technologies, Inc.
AS4151 304 172 132 43.4% USDA
AS16473 201 76 125 62.2% Bell South
AS577 304 185 119 39.1% Bell Advanced Communications Inc.
AS13999 132 16 116 87.9% Mega Cable S.A. de C.V.
AS4293 380 271 109 28.7% Cable & Wireless USA
AS6595 167 60 107 64.1% DoD Education Activity Network As
AS7018 777 672 105 13.5% AT&T
AS721 366 266 100 27.3% DLA Systems Automation Center
AS705 262 162 100 38.2% UUNET Technologies, Inc.
AS2048 216 116 100 46.3% State of Louisiana
AS4755 199 122 77 38.7% Videsh Sanchar Nigam Ltd. Autonom
AS11686 215 138 77 35.8% Education Networks of America
AS1239 481 407 74 15.4% Sprint
AS7046 331 261 70 21.1% UUNET Technologies, Inc.
AS4200 142 74 68 47.9% Apex Global Information Services,
AS3464 162 95 67 41.4% Alabama SuperComputer Network
AS12302 100 34 66 66.0% MobiFon S.A.
AS724 216 151 65 30.1% DLA Systems Automation Center
AS6471 129 64 65 50.4% ENTEL CHILE S.A.
AS17557 128 66 62 48.4% Pakistan Telecom
AS19632 70 11 59 84.3% Metropolis Intercom S.A.
AS16758 63 6 57 90.5% IKON Office Solutions
AS209 309 254 55 17.8% Qwest
AS306 60 6 54 90.0% National Guard Bureau
AS226 145 93 52 35.9% Los Nettos
AS400 135 84 51 37.8% Headquarters Standard Systems Cen
AS17561 111 60 51 45.9% Internet service provision to Wes
AS1 529 478 51 9.6% BBN Planet
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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