This is an auto-generated mail on Fri Apr 30 12:00:00 PDT 1999 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is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes.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 30Apr99 0) General Status Table History ------------- Date Prefixes 230499 58766 240499 58380 250499 58344 260499 58454 270499 58458 280499 58561 290499 58602 300499 58568 Check http://www.employees.org/~tbates/cidr.plot.html for a plot of the table history. Possible Bogus Routes --------------------- *** Bogus 71.0.2.0/24 from AS1239 *** Bogus 221.43.160.0/19 from AS12323 AS Summary ---------- Number of ASes in routing system: 4878 Number of ASes announcing only one prefix: 2461 (1329 cidr, 1132 classful) Largest number of cidr routes: 376 announced by AS701 Largest number of classful routes: 799 announced by AS701 1) Gains by aggregating at the origin AS level --- 30Apr99 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS271 360 148 212 58.9% BCnet Backbone AS577 292 182 110 37.7% Bell Canada Backbone AS4293 289 182 107 37.0% IMCI AS174 603 502 101 16.7% Performance Systems International AS4755 175 87 88 50.3% Videsh Sanchar Nigam Ltd. India AS2493 211 126 85 40.3% iSTAR Internet, Inc. AS4200 167 94 73 43.7% AGIS (Apex Global Information Ser AS3749 136 63 73 53.7% TECNET AS7657 193 121 72 37.3% The Internet Group Limited AS1267 94 24 70 74.5% IUNET-AS AS7496 98 29 69 70.4% Power Up AS1239 550 485 65 11.8% SprintLink Backbone AS7545 111 47 64 57.7% TPG Internet Pty Ltd AS1785 384 321 63 16.4% NYSERNet Backbone AS7046 264 202 62 23.5% UUNET-CUSTOMER AS10928 112 50 62 55.4% UNKNOWN AS1221 451 392 59 13.1% AARNET-AS AS4740 329 272 57 17.3% Ozemail Pty Ltd (ASN-OZEMAIL) AS9269 66 10 56 84.8% Hong Kong CTI AS3493 238 184 54 22.7% INTERLINK AS719 474 421 53 11.2% LANLINK autonomous system AS72 93 41 52 55.9% Schlumberger Information Network AS803 79 35 44 55.7% SaskNet Backbone AS5674 80 36 44 55.0% PBI-NET-BLK AS3737 109 71 38 34.9% PenTeleData Inc. (ASN-PTD) AS1 499 465 34 6.8% BBNPLANET AS7122 110 78 32 29.1% MTS ADVANCED Network Policy AS4307 32 1 31 96.9% SVINET-1 AS2907 209 178 31 14.8% SINET AS11515 32 1 31 96.9% UNKNOWN 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