The Cidr Report
Tony Bates
tbates at cisco.com
Sat Mar 10 07:00:02 UTC 2001
This is an auto-generated mail on Fri Mar 9 23:00:00 PST 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.
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A summary of the last weeks changes in terms of withdrawn and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 xara.net for giving me access to their routing tables once a
day.
Please send any comments about this report directly to me.
Check http://www.employees.org/~tbates/cidr-report.html for a daily
update of this report.
------------------------------------------------------------------------------
CIDR REPORT for 09Mar01
0) General Status
Table History
-------------
Date Prefixes
020301 97761
030301 97965
040301 99978
050301 97915
060301 98487
070301 98007
080301 97909
090301 98107
Check http://www.employees.org/~tbates/cidr.plot.html for a plot
of the table history.
Possible Bogus Routes
---------------------
*** Bogus 91.16.23.0/24 from AS11770
AS Summary
----------
Number of ASes in routing system: 10176
Number of ASes announcing only one prefix: 5971 (3385 cidr, 2586 classful)
Largest number of cidr routes: 954 announced by AS701
Largest number of classful routes: 1612 announced by AS1221
1) Gains by aggregating at the origin AS level
--- 09Mar01 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS1221 1612 1211 401 24.9% Telstra Pty Ltd
AS2764 754 539 215 28.5% connect.com.au pty ltd
AS701 1416 1258 158 11.2% UUNET Technologies, Inc.
AS8006 145 19 126 86.9% Systems & Software Consortium, In
AS7545 190 70 120 63.2% TPG Internet Pty Ltd
AS9269 162 53 109 67.3% Internet service Provider in Hong
AS6429 213 107 106 49.8% RdC Internet
AS6595 161 62 99 61.5% DoD Education Activity Network As
AS705 331 238 93 28.1% UUNET Technologies, Inc.
AS4293 380 287 93 24.5% Cable & Wireless USA
AS13999 102 11 91 89.2% Mega Cable S.A. de C.V.
AS8013 324 238 86 26.5% PSINet Ltd. Canada
AS4151 229 147 82 35.8% USDA
AS7018 648 569 79 12.2% AT&T
AS4755 209 130 79 37.8% Videsh Sanchar Nigam Ltd. Autonom
AS1942 136 64 72 52.9% FR-CICG-GRENOBLE
AS816 386 315 71 18.4% UUNET Canada
AS577 240 170 70 29.2% Bell Advanced Communications Inc.
AS174 496 428 68 13.7% PSINet Inc.
AS724 214 148 66 30.8% DLA Systems Automation Center
AS5106 101 37 64 63.4% Ameritech Advanced Data Services,
AS11170 64 1 63 98.4% Bewell Net
AS7657 169 108 61 36.1% The Internet Group Limited
AS3749 120 59 61 50.8% Tennessee Board of Regents
AS3464 153 93 60 39.2% Alabama SuperComputer Network
AS226 154 94 60 39.0% Los Nettos
AS376 133 76 57 42.9% Reseau Interordinateurs Scientiqu
AS16758 63 6 57 90.5% IKON Office Solutions
AS6413 67 11 56 83.6% Southern Online Systems, Inc.
AS7568 83 28 55 66.3% C.S. Communications Co., Ltd.
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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