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The Cidr Report
This is an auto-generated mail on Fri Sep 14 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A summary of the last weeks changes in terms of withdrawn and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 14Sep01
0) General Status
Table History
-------------
Date Prefixes
070901 103166
080901 102958
090901 102972
100901 103070
110901 103168
120901 102677
130901 102777
140901 102582
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: 11538
Number of ASes announcing only one prefix: 6879 (3912 cidr, 2967 classful)
Largest number of cidr routes: 837 announced by AS701
Largest number of classful routes: 1362 announced by AS701
1) Gains by aggregating at the origin AS level
--- 14Sep01 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS1221 1279 969 310 24.2% Telstra Pty Ltd
AS701 1362 1162 200 14.7% UUNET Technologies, Inc.
AS4151 286 163 123 43.0% USDA
AS577 313 192 121 38.7% Bell Advanced Communications Inc.
AS6595 171 60 111 64.9% DoD Education Activity Network As
AS4293 379 270 109 28.8% Cable & Wireless USA
AS13999 113 11 102 90.3% Mega Cable S.A. de C.V.
AS705 247 148 99 40.1% UUNET Technologies, Inc.
AS16473 171 74 97 56.7% Bell South
AS6429 195 100 95 48.7% AT&T Chile Internet S.A.
AS7018 755 661 94 12.5% AT&T
AS4755 215 129 86 40.0% Videsh Sanchar Nigam Ltd. Autonom
AS12302 97 27 70 72.2% MobiFon S.A.
AS4200 142 74 68 47.9% Apex Global Information Services,
AS724 221 156 65 29.4% DLA Systems Automation Center
AS6471 127 62 65 51.2% ENTEL CHILE S.A.
AS1239 469 404 65 13.9% Sprint
AS7046 316 254 62 19.6% UUNET Technologies, Inc.
AS209 310 252 58 18.7% Qwest
AS19632 67 9 58 86.6% Metropolis Intercom S.A.
AS16758 63 6 57 90.5% IKON Office Solutions
AS3464 149 94 55 36.9% Alabama SuperComputer Network
AS703 309 255 54 17.5% UUNET Technologies, Inc.
AS17557 121 68 53 43.8% Pakistan Telecom
AS226 145 93 52 35.9% Los Nettos
AS17561 113 62 51 45.1% Internet service provision to Wes
AS1 539 488 51 9.5% BBN Planet
AS4323 249 199 50 20.1% Time Warner Communications, Inc.
AS855 144 96 48 33.3% Canadian Research Network
AS852 206 160 46 22.3% Telus Advanced Communications
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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