
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is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes.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

--- 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 Sorry about that, one of our upstream providers decided to ignore the "no-export" community we were setting on specifics within our provider blocks. We have stopped advertising the specifics to them while we yell at them to fix it :-) Mark.
participants (2)
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Mark Prior
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Tony Bates