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The Cidr Report
This is an auto-generated mail on Fri Oct 5 23:00:01 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A summary of the last weeks changes in terms of withdrawn and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 05Oct01
0) General Status
Table History
-------------
Date Prefixes
280901 104483
290901 104988
300901 104943
011001 105036
021001 105301
031001 104637
041001 104254
051001 104449
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: 11739
Number of ASes announcing only one prefix: 6989 (3974 cidr, 3015 classful)
Largest number of cidr routes: 844 announced by AS701
Largest number of classful routes: 1394 announced by AS701
1) Gains by aggregating at the origin AS level
--- 05Oct01 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS1221 1258 958 300 23.8% Telstra Pty Ltd
AS4151 302 170 132 43.7% USDA
AS16473 201 76 125 62.2% Bell South
AS577 307 187 120 39.1% Bell Advanced Communications Inc.
AS13999 131 20 111 84.7% Mega Cable S.A. de C.V.
AS4293 375 267 108 28.8% Cable & Wireless USA
AS2048 215 116 99 46.0% State of Louisiana
AS4755 208 131 77 37.0% Videsh Sanchar Nigam Ltd. Autonom
AS1239 481 410 71 14.8% Sprint
AS3464 163 95 68 41.7% Alabama SuperComputer Network
AS12302 98 32 66 67.3% MobiFon S.A.
AS11686 192 126 66 34.4% Education Networks of America
AS6471 128 63 65 50.8% ENTEL CHILE S.A.
AS4200 137 72 65 47.4% Apex Global Information Services,
AS17557 124 65 59 47.6% Pakistan Telecom
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
AS3908 291 238 53 18.2% Supernet, Inc.
AS400 137 85 52 38.0% Headquarters Standard Systems Cen
AS226 145 93 52 35.9% Los Nettos
AS17561 113 62 51 45.1% Internet service provision to Wes
AS1 537 486 51 9.5% BBN Planet
AS637 106 58 48 45.3% Department of Navy
AS4323 246 198 48 19.5% Time Warner Communications, Inc.
AS1913 152 104 48 31.6% Defense Logistics Agency
AS10620 68 21 47 69.1% TVCABLE BOGOTA
AS15290 246 200 46 18.7% AT&T Canada IES
AS376 120 76 44 36.7% Reseau Interordinateurs Scientiqu
AS5416 51 9 42 82.4% BATELCO-BH
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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