Nicolas Deffayet has requested me to send a copy of the Cidr Report to this list.
This report is produced automatically once a week, and summarizes the aggregation state of the BGP routing table and notes possibilites for further aggregation. An example is attached below. If there are strong objections from list members to this use of the euronog mailing list I'll refrain from setting this up. Otherwise I'll go ahead in a day or so. kind regards, Geoff Huston ------ example report This report has been generated at Wed Feb 5 13:46:00 2003 AEST. The report analyses the BGP Routing Table of an AS4637 (Reach) router and generates a report on aggregation potential within the table. Check http://www.cidr-report.org/as4637 for a current version of this report. Recent Table History Date Prefixes CIDR Agg 29-01-03 118290 85119 30-01-03 118378 85040 31-01-03 118463 85095 01-02-03 118556 85054 02-02-03 118567 85128 03-02-03 118587 85148 04-02-03 118588 85028 05-02-03 118502 85090 AS Summary 14503 Number of ASes in routing system 5706 Number of ASes announcing only one prefix 1577 Largest number of prefixes announced by an AS AS701 : ALTERNET-AS UUNET Technologies, Inc. 72916992 Largest address span announced by an AS (/32s) AS568 : SUMNET-AS DISO-UNRRA Aggregation Summary The algorithm used in this report proposes aggregation only when there is a precise match using the AS path, so as to preserve traffic transit policies. Aggregation is also proposed across non-advertised address space ('holes'). --- 05Feb03 --- ASnum NetsNow NetsAggr NetGain % Gain Description Table 118541 85131 33410 28.2% All ASes AS3908 1057 584 473 44.7% SUPERNETASBLK SuperNet, Inc. AS18566 451 7 444 98.4% COVAD Covad Communications AS701 1577 1165 412 26.1% ALTERNET-AS UUNET Technologies, Inc. AS7018 1432 1038 394 27.5% ATT-INTERNET4 AT&T WorldNet Services AS4323 528 189 339 64.2% TW-COMM Time Warner Communications, Inc. AS7843 581 255 326 56.1% ADELPHIA-AS Adelphia Corp. AS6197 469 154 315 67.2% BATI-ATL BellSouth Network Solutions, Inc AS1221 1137 832 305 26.8% ASN-TELSTRA Telstra Pty Ltd AS6347 376 85 291 77.4% DIAMOND SAVVIS Communications Corporation AS1239 961 675 286 29.8% SPRINTLINK Sprint AS4355 407 123 284 69.8% ERMS-EARTHLNK EARTHLINK, INC AS22927 295 14 281 95.3% AR-TEAR2-LACNIC TELEFONICA DE ARGENTINA AS7046 550 277 273 49.6% UUNET-CUSTOMER UUNET Technologies, Inc. AS4151 333 63 270 81.1% USDA-1 USDA AS705 459 207 252 54.9% ASN-ALTERNET UUNET Technologies, Inc. AS4814 261 15 246 94.3% CHINANET-BEIJING-AP China Telecom (Group) AS852 692 454 238 34.4% ASN852 Telus Advanced Communications AS1 663 436 227 34.2% GNTY-1 Genuity AS6198 426 203 223 52.3% BATI-MIA BellSouth Network Solutions, Inc AS22291 238 31 207 87.0% CHARTER-LA Charter Communications AS17676 220 24 196 89.1% GIGAINFRA XTAGE CORPORATION AS209 528 338 190 36.0% ASN-QWEST Qwest AS690 498 308 190 38.2% MERIT-AS-27 Merit Network Inc. AS4134 301 117 184 61.1% ERX-CHINALINK Data Communications Bureau AS2048 260 87 173 66.5% LANET-1 State of Louisiana AS2386 437 265 172 39.4% INS-AS AT&T Data Communications Services AS6140 286 134 152 53.1% IMPSAT-USA ImpSat AS17557 336 186 150 44.6% PKTELECOM-AS-AP Pakistan Telecom AS6327 186 40 146 78.5% SHAWFIBER Shaw Fiberlink Limited AS11492 303 160 143 47.2% CABLEONE CABLE ONE Total 16248 8466 7782 47.9% Top 30 total Please see http://www.cidr-report.org for the full report --------------------------------------------------------------------- EuroNOG: http://www.euronog.org/ To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
