The Cidr Report
Tony Bates
tbates at cisco.com
Sat Feb 24 07:00:04 UTC 2001
This is an auto-generated mail on Fri Feb 23 23:00:02 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A summary of the last weeks changes in terms of withdrawn and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 23Feb01
0) General Status
Table History
-------------
Date Prefixes
110201 96509
120201 96907
200201 96086
200201 96219
200201 96217
210201 96188
220201 96107
230201 96158
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: 10023
Number of ASes announcing only one prefix: 5876 (3327 cidr, 2549 classful)
Largest number of cidr routes: 959 announced by AS701
Largest number of classful routes: 1714 announced by AS701
1) Gains by aggregating at the origin AS level
--- 23Feb01 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS701 1714 1502 212 12.4% UUNET Technologies, Inc.
AS1221 640 487 153 23.9% Telstra Pty Ltd
AS8006 145 19 126 86.9% Systems & Software Consortium, In
AS7545 193 73 120 62.2% TPG Internet Pty Ltd
AS9269 163 52 111 68.1% Internet service Provider in Hong
AS13999 109 7 102 93.6% Mega Cable S.A. de C.V.
AS6595 161 62 99 61.5% DoD Education Activity Network As
AS4293 380 287 93 24.5% Cable & Wireless USA
AS6429 192 101 91 47.4% RdC Internet
AS271 197 107 90 45.7% University of British Columbia
AS8013 330 244 86 26.1% PSINet Ltd. Canada
AS705 329 243 86 26.1% UUNET Technologies, Inc.
AS7496 103 22 81 78.6% Power Up
AS4755 207 127 80 38.6% Videsh Sanchar Nigam Ltd. Autonom
AS4151 242 166 76 31.4% USDA
AS1942 136 64 72 52.9% FR-CICG-GRENOBLE
AS7018 631 560 71 11.3% AT&T
AS577 235 166 69 29.4% Bell Advanced Communications Inc.
AS7046 322 254 68 21.1% UUNET Technologies, Inc.
AS5106 101 37 64 63.4% Ameritech Advanced Data Services,
AS724 220 157 63 28.6% DLA Systems Automation Center
AS1727 156 93 63 40.4% Commander Naval Surface force US
AS11170 64 1 63 98.4% Bewell Net
AS3464 154 92 62 40.3% Alabama SuperComputer Network
AS174 483 421 62 12.8% PSINet Inc.
AS3749 118 59 59 50.0% Tennessee Board of Regents
AS16758 63 6 57 90.5% IKON Office Solutions
AS6413 67 11 56 83.6% Southern Online Systems, Inc.
AS376 132 76 56 42.4% Reseau Interordinateurs Scientiqu
AS226 148 92 56 37.8% Los Nettos
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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