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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical The Cidr Report
This is an auto-generated mail on Fri Apr 6 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.
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A summary of the last weeks changes in terms of withdrawn and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.
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CIDR REPORT for 06Apr01
0) General Status
Table History
-------------
Date Prefixes
300301 98619
310301 98637
010401 98847
020401 98771
030401 98768
040401 98995
050401 99092
060401 99382
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: 10427
Number of ASes announcing only one prefix: 6119 (3475 cidr, 2644 classful)
Largest number of cidr routes: 945 announced by AS705
Largest number of classful routes: 1594 announced by AS1221
1) Gains by aggregating at the origin AS level
--- 06Apr01 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS1221 1594 1193 401 25.2% Telstra Pty Ltd
AS701 1469 1288 181 12.3% UUNET Technologies, Inc.
AS8013 574 462 112 19.5% PSINet Ltd. Canada
AS6429 215 103 112 52.1% RdC Internet
AS6595 165 63 102 61.8% DoD Education Activity Network As
AS705 343 245 98 28.6% UUNET Technologies, Inc.
AS13999 104 8 96 92.3% Mega Cable S.A. de C.V.
AS4151 242 148 94 38.8% USDA
AS4293 373 280 93 24.9% Cable & Wireless USA
AS7018 674 591 83 12.3% AT&T
AS4755 207 126 81 39.1% Videsh Sanchar Nigam Ltd. Autonom
AS577 241 172 69 28.6% Bell Advanced Communications Inc.
AS5106 101 37 64 63.4% Ameritech Advanced Data Services,
AS9498 80 17 63 78.8% BHARTI BT INTERNET LTD.
AS3464 153 91 62 40.5% Alabama SuperComputer Network
AS3749 121 60 61 50.4% Tennessee Board of Regents
AS724 211 151 60 28.4% DLA Systems Automation Center
AS11252 92 34 58 63.0% ISU Computer Center Bldg. 5
AS16758 63 6 57 90.5% IKON Office Solutions
AS6413 67 11 56 83.6% Southern Online Systems, Inc.
AS376 134 78 56 41.8% Reseau Interordinateurs Scientiqu
AS226 148 92 56 37.8% Los Nettos
AS7568 84 29 55 65.5% C.S. Communications Co., Ltd.
AS1 608 553 55 9.0% BBN Planet
AS4323 230 176 54 23.5% Time Warner Communications, Inc.
AS6471 99 46 53 53.5% ENTEL CHILE S.A.
AS17561 110 59 51 46.4% Internet service provision to Wes
AS9269 113 64 49 43.4% City Telecom (H.K.) Ltd.
AS174 417 368 49 11.8% PSINet Inc.
AS1237 107 58 49 45.8% System Engineering Research Insti
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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