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The Cidr Report
This is an auto-generated mail on Fri Sep 28 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A summary of the last weeks changes in terms of withdrawn and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 28Sep01
0) General Status
Table History
-------------
Date Prefixes
210901 103625
220901 103684
230901 103666
240901 103680
250901 103629
260901 103632
270901 104968
280901 104483
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: 11715
Number of ASes announcing only one prefix: 6979 (3955 cidr, 3024 classful)
Largest number of cidr routes: 855 announced by AS701
Largest number of classful routes: 1389 announced by AS701
1) Gains by aggregating at the origin AS level
--- 28Sep01 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS1221 1262 961 301 23.9% Telstra Pty Ltd
AS4151 299 171 128 42.8% USDA
AS16473 201 76 125 62.2% Bell South
AS577 306 187 119 38.9% Bell Advanced Communications Inc.
AS13999 132 16 116 87.9% Mega Cable S.A. de C.V.
AS6595 170 60 110 64.7% DoD Education Activity Network As
AS4293 376 267 109 29.0% Cable & Wireless USA
AS2048 209 115 94 45.0% State of Louisiana
AS6429 195 102 93 47.7% AT&T Chile Internet S.A.
AS4755 213 131 82 38.5% Videsh Sanchar Nigam Ltd. Autonom
AS12302 98 28 70 71.4% MobiFon S.A.
AS1239 471 402 69 14.6% Sprint
AS4200 142 74 68 47.9% Apex Global Information Services,
AS6471 128 63 65 50.8% ENTEL CHILE S.A.
AS17557 128 65 63 49.2% Pakistan Telecom
AS3464 157 96 61 38.9% Alabama SuperComputer Network
AS19632 67 9 58 86.6% Metropolis Intercom S.A.
AS16758 63 6 57 90.5% IKON Office Solutions
AS209 303 248 55 18.2% Qwest
AS3908 283 230 53 18.7% Supernet, Inc.
AS11686 160 107 53 33.1% Education Networks of America
AS226 145 93 52 35.9% Los Nettos
AS17561 113 62 51 45.1% Internet service provision to Wes
AS1 533 482 51 9.6% BBN Planet
AS4323 247 197 50 20.2% Time Warner Communications, Inc.
AS306 59 10 49 83.1% National Guard Bureau
AS637 104 56 48 46.2% Department of Navy
AS10620 68 21 47 69.1% TVCABLE BOGOTA
AS1913 151 105 46 30.5% Defense Logistics Agency
AS15290 244 199 45 18.4% AT&T Canada IES
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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