- routing-wg - mailman.ripe.net

Re: More route flaps & inconsistent origins
by Dale S. Johnson 14 Oct '94

14 Oct '94

Daniel, > > bmanning(a)ISI.EDU writes: > > > There is certainly a need for planning and/or simulation tools which > > > support the designer in handling topologies too complex to keep in (one) > > > mind. Anyone working on such things? > > > > > > > I have been led to believe that the RA has this as an item on its adgenda. > > Still the question remains: Anyone working on such things? > > Sorry to be flippant (just this one time :-). > > Seriously: I would like to know about any developments in this area. > We should prevent wheel re-invention. You're quite right; thanks for raising this. The RA staff is currently concentrating on writing tools to generate router configuration files from RIPE-181 policy and route descriptions. The first of these tools will be in active production usage within a few weeks. We have several beta-test sites, but I would be interested in talking to anyone else who has an interest in these tools. As part of this tool development, the RA project has written the following: - A RIPE-181 information server (in Perl-5) which returns information in a form that is handy for policy analysis and router configuration generation. - A RIPE-181 policy parser (in C++ and bison) which converts policy expressions to any of several forms, including parse trees or net lists. - An early "View Analysis" program (in Perl-4), which compares and processes RIPE-181 policy descriptions for inclusion in a Route Server. - Dumps of most of the data which is in the PRDB into RIPE-181 format (available via whois -h rrdb.merit.edu) Our hope is that these pieces can form a platform for a large range of analysis tools in the future. AS-topology "tree walkers", for instance, should be fairly easy to write based on the output of the parser. All this code and the tools built from it will be publicly and freely available, (though copyrighted). The RA staff has talked some about further analysis tools, but we're pretty busy rolling out the Config Generators and updating the Routing Registry to use RIPE-181 at the moment, including picking up the great new code release from RIPE! We, too, would like to share development and avoid duplication of effort in the production of new tools. --Dale

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Re: More route flaps & inconsistent origins
by Havard Eidnes 14 Oct '94

14 Oct '94

Hi, again, here is a new route flap report. The villains from the top of the previous report have apparently fixed their problem, but a few ASes again manage to get the dubious position at the top of the list with more than 20.000 route flaps in the 24 hours from Oct 12 03:05 GMT to Oct 13 03:05 GMT. Again I would like to draw to your attention the fact that some destinations are apparently being originated by more than one AS. These show up in the report with more then one origin. I was under the impression that thsi is an illegal or highly undesireable configuration; I would still like to hear some comments on this issue. The top 20 were: Origin(s) flaps retr unrch dests AS AS Description 1717 26152 9317 9459 594 1717 RENATER 174:2149 21315 3503 3838 1019 2149 PSINET-2 174:2149 21315 3503 3838 1019 174 NYSERNET-AS 1270 7441 3020 3026 242 1270 EUnet/DE 701 6187 1863 1970 872 701 AlterNet 517 4397 1485 1514 117 517 XLINK-UKA 1237 3689 1172 1176 103 1237 EUNSOL-AS 1899 2854 1230 1274 115 1899 Fnet, EUnet-France 86 2845 592 740 452 86 SURANET-AS 378 2789 387 630 127 378 ILAN 1836 2541 1251 1249 62 1836 EUnet/CH Autonomous System 2551 2519 395 421 196 2551 NETCOM-AS 279 2331 743 1186 490 279 SURANET-AS-2 1290 1922 674 698 81 1290 EUnet GB 3354 1907 307 400 216 3354 THENET-AS-1 2915 1576 202 252 101 2915 SPIN-NET 174 1554 428 470 124 174 NYSERNET-AS 1250 1544 353 521 343 1250 SINGAPORE-AS 137 1410 163 182 169 137 GARR 2715 1385 377 383 18 2715 REDERIO-AS Legend: "Origin(s)" are the AS or ASes seen as "origin" of routing updates (essentially the last element in the logged path). "flaps" is the sum of "retr" and the number of times the route was updated (e.g. new path) "retr" is the number of times a route was withdrawn (retracted) "unrch" is the number of withdrawals which caused loss of connectivity for a destination "dests" is the number of destinations involved in route flaps "AS description" was what the RIPE database told me last time I looked up the AS descriptions or AS names. Excluded from this picture are any routes involving as-sets (there are a number of routing flaps involving them as well, I'll hopefully get some time to analyzing them separately sometime later...). Attached below you will find a more detailed report showing the number of times each individual path was announced for each of the entries on the "top 20" list, I can also easily (on request) produce a "per-network" report for any given AS. Regards, - Havard ------------------------------ Origin(s) flaps retr unrch dests AS AS Description 1717 26152 9317 9459 594 1717 RENATER Count Path 11275 2603 1755 1717 6795 2603 3224 2043 1128 1755 1717 234 2603 3224 2043 1128 1133 1800 1755 1717 Origin(s) flaps retr unrch dests AS AS Description 174:2149 21315 3503 3838 1019 2149 PSINET-2 Count Path 4724 2603 1805 1800 690 2149 446 2603 1755 1800 690 2149 572 2603 1805 1800 1133 690 2149 110 2603 1805 1800 1239 1240 690 2149 77 2603 1805 1800 701 690 2149 7 2603 1755 1800 1239 1240 690 2149 10 2603 1755 1800 1133 690 2149 9 2603 1755 1800 701 690 2149 2 2603 1805 1800 1133 1674 690 2149 8 2603 1805 1800 1239 690 2149 1 2603 1755 1800 1133 1674 690 2149 Origin(s) flaps retr unrch dests AS AS Description 174:2149 21315 3503 3838 1019 174 NYSERNET-AS Count Path 9673 2603 1805 1800 174 1598 2603 1755 1800 174 609 2603 1805 1800 690 174 70 2603 1805 1800 1239 1280 174 114 2603 3224 2043 1128 1133 1800 174 66 2603 1755 1800 690 174 55 2603 1755 1800 1133 690 174 92 2603 1805 1800 1133 690 174 11 2603 1805 1800 690 701 174 18 2603 1755 1800 1239 1280 174 23 2603 1805 1800 701 690 174 1 2603 1755 1800 701 690 174 Origin(s) flaps retr unrch dests AS AS Description 1270 7441 3020 3026 242 1270 EUnet/DE Count Path 4421 2603 3224 2043 1128 286 1270 Origin(s) flaps retr unrch dests AS AS Description 701 6187 1863 1970 872 701 AlterNet Count Path 2789 2603 1805 1800 701 160 2603 1805 1800 1239 1280 701 441 2603 1755 1800 701 71 2603 1755 1800 1239 1280 701 546 2603 1805 1800 690 701 45 2603 1805 1800 1133 690 701 56 2603 3224 2043 1128 1133 1800 701 273 2603 3224 2043 1128 1133 701 36 2603 1755 1800 690 701 Origin(s) flaps retr unrch dests AS AS Description 517 4397 1485 1514 117 517 XLINK-UKA Count Path 945 2603 3224 2043 1128 1755 1273 517 1483 2603 1755 1273 517 286 2603 1755 1800 690 1324 517 20 2603 1805 1800 701 690 1324 517 46 2603 3224 2043 1128 1133 1800 1755 1273 517 91 2603 1805 1800 690 1324 517 25 2603 1805 1800 1133 690 1324 517 16 2603 1755 1800 1133 690 1324 517 Origin(s) flaps retr unrch dests AS AS Description 1237 3689 1172 1176 103 1237 EUNSOL-AS Count Path 874 2603 1805 1800 1237 1236 2603 3224 2043 786 1129 1237 407 2603 1755 1800 1237 Origin(s) flaps retr unrch dests AS AS Description 1899 2854 1230 1274 115 1899 Fnet, EUnet-France Count Path 1624 2603 3224 2043 1128 286 1899 Origin(s) flaps retr unrch dests AS AS Description 86 2845 592 740 452 86 SURANET-AS Count Path 1402 2603 1805 1800 86 215 2603 1805 1800 690 279 3561 86 30 2603 1805 1800 1133 690 279 3561 86 71 2603 1755 1800 690 279 3561 86 55 2603 1805 1800 1239 1280 1957 690 279 3561 86 3 2603 1805 1800 701 690 279 3561 86 14 2603 1755 1800 1239 1280 1957 690 279 3561 86 10 2603 1755 1800 1133 690 279 3561 86 1 2603 1805 1800 1133 1674 690 279 3561 86 54 2603 1805 1800 690 279 86 308 2603 1805 1800 690 86 51 2603 1755 1800 86 23 2603 1805 1800 1239 1280 1957 690 86 5 2603 1755 1800 1239 1280 1957 690 86 3 2603 1805 1800 701 690 86 6 2603 1805 1800 1133 690 86 4 2603 1805 1800 1239 1280 1957 690 279 86 3 2603 1755 1800 1239 1280 1957 690 279 86 4 2603 1755 1800 690 86 3 2603 1755 1800 1133 690 86 Origin(s) flaps retr unrch dests AS AS Description 378 2789 387 630 127 378 ILAN Count Path 1280 2603 1755 378 686 2603 1755 1800 174 378 327 2603 1805 1800 174 378 19 2603 1755 1800 690 174 378 44 2603 3224 2043 1128 1755 378 22 2603 3224 2043 1128 1133 1800 174 378 6 2603 1805 1800 690 174 378 6 2603 3224 2043 1128 1133 1800 1755 378 7 2603 1755 1800 701 690 174 378 3 2603 1805 1800 701 690 174 378 1 2603 1755 1800 1133 1674 690 174 378 1 2603 1805 1800 1133 1674 690 174 378 Origin(s) flaps retr unrch dests AS AS Description 1836 2541 1251 1249 62 1836 EUnet/CH Autonomous System Count Path 1290 2603 3224 2043 1128 286 1836 Origin(s) flaps retr unrch dests AS AS Description 2551 2519 395 421 196 2551 NETCOM-AS Count Path 909 2603 1805 1800 2551 693 2603 1805 1800 690 1321 2551 119 2603 1755 1800 2551 138 2603 1755 1800 1239 1280 2551 145 2603 1805 1800 1239 1280 2551 20 2603 1805 1800 690 2551 48 2603 3224 2043 1128 1133 2551 10 2603 1805 1800 1133 690 1321 2551 15 2603 1755 1800 690 1321 2551 4 2603 1805 1800 1133 1674 690 2551 2 2603 1755 1800 1133 690 2551 8 2603 1805 1800 1133 690 2551 6 2603 1805 1800 701 690 1321 2551 1 2603 1805 1800 1133 1674 690 1321 2551 2 2603 1755 1800 690 2551 3 2603 3224 2043 1128 1133 1800 2551 1 2603 1755 1800 701 690 1321 2551 Origin(s) flaps retr unrch dests AS AS Description 279 2331 743 1186 490 279 SURANET-AS-2 Count Path 764 2603 1805 1800 86 279 82 2603 1805 1800 1239 1280 1957 690 86 279 371 2603 1755 1800 86 279 116 2603 1805 1800 1133 690 279 80 2603 1805 1800 1239 690 279 52 2603 1805 1800 690 86 3561 279 46 2603 1805 1800 690 86 279 45 2603 1805 1800 690 279 2 2603 1805 1800 1239 1280 1957 690 279 10 2603 1805 1800 1133 690 86 279 3 2603 1755 1800 1239 1280 1957 690 86 279 4 2603 1755 1800 690 279 10 2603 1755 1800 690 86 279 3 2603 1755 1800 1133 690 279 2 2603 1805 1800 701 690 279 Origin(s) flaps retr unrch dests AS AS Description 1290 1922 674 698 81 1290 EUnet GB Count Path 1248 2603 3224 2043 1128 286 1290 Origin(s) flaps retr unrch dests AS AS Description 3354 1907 307 400 216 3354 THENET-AS-1 Count Path 436 2603 1755 1800 1239 3354 886 2603 1805 1800 1239 3354 238 2603 1805 1800 690 3354 14 2603 1805 1800 1133 690 3354 16 2603 3224 2043 1128 1133 1239 3354 2 2603 1805 1800 1239 1240 690 3354 7 2603 3224 2043 1128 1133 1800 1239 3354 1 2603 1755 1800 690 3354 1 2603 1805 1800 1239 1240 690 114 3354 2 2603 1805 1800 690 114 3354 Origin(s) flaps retr unrch dests AS AS Description 2915 1576 202 252 101 2915 SPIN-NET Count Path 335 2603 1805 1800 690 2149 174 2713 2915 840 2603 1805 1800 174 2713 2915 199 2603 1755 1800 174 2713 2915 Origin(s) flaps retr unrch dests AS AS Description 174 1554 428 470 124 174 NYSERNET-AS Count Path 775 2603 1805 1800 174 301 2603 1755 1800 174 24 2603 1805 1800 1239 1280 174 35 2603 3224 2043 1128 1133 1800 174 23 2603 1805 1800 1133 690 174 23 2603 1755 1800 1133 690 174 8 2603 1755 1800 1239 1280 174 1 2603 1805 1800 690 174 2 2603 3224 2043 1128 1133 3561 174 Origin(s) flaps retr unrch dests AS AS Description 1250 1544 353 521 343 1250 SINGAPORE-AS Count Path 912 2603 1805 1800 690 97 1250 14 2603 1755 1800 690 97 1250 1 2603 1755 1800 1239 1240 690 97 1250 240 2603 1805 1800 1239 1280 97 1250 6 2603 1755 1800 1133 690 97 1250 9 2603 1805 1800 1133 690 97 1250 8 2603 1755 1800 1239 1280 97 1250 1 2603 1805 1800 1239 1240 690 97 1250 Origin(s) flaps retr unrch dests AS AS Description 137 1410 163 182 169 137 GARR Count Path 423 2603 3224 2043 137 226 2603 1755 1128 2043 137 82 2603 1755 1800 86 293 3425 2038 513 2043 137 383 2603 1755 513 2038 137 61 2603 1805 1800 86 293 3425 2038 137 46 2603 3224 2043 1128 513 2038 137 13 2603 1755 1128 2043 513 2038 137 3 2603 1755 1800 293 3425 2038 513 1128 2043 137 2 2603 1805 1800 701 690 293 3425 2038 137 2 2603 1755 1800 701 690 293 3425 2038 137 2 2603 1755 1800 86 293 3425 2038 137 2 2603 3224 2043 513 2038 137 2 2603 1755 1800 86 293 3425 2038 513 1128 2043 137 Origin(s) flaps retr unrch dests AS AS Description 2715 1385 377 383 18 2715 REDERIO-AS Count Path 619 2603 1805 1800 690 1740 2715 175 2603 1755 1800 690 1740 2715 14 2603 1755 1800 701 690 1740 2715 121 2603 1805 1800 701 690 1740 2715 77 2603 1805 1800 1133 690 1740 2715 11 2603 1755 1800 1133 690 1740 2715 4 2603 1805 1800 1133 1674 690 1740 2715

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Database transition step 1 completed
by Marten Terpstra 14 Oct '94

14 Oct '94

Dear all, I am pleased to say that the first step of the RIPE database transition has been succesfully completed yesterday. Up till now, one minor and one major bug have been found and fixed and the database seems stable. Those who daily ftp the ripe database from ftp.ripe.net may have found that it was not there this morning. This was a simple typo in one of my scripts and has been fixed. The ftpable files (the complete database in ripe/dbase/ripe.db and the split versions in ripe/dbase/split) are currently generated at around 5:30 (AM for the US folks ;-) Dutch time, which is currently UTC+1. All database files ara available as uncompressed and compressed (both normal compress and gzip) versions. The generation time can be changed if you think there is a need (earlier, not later). Those who run a secondary copy of the database may find that the latest ftpable database takes much longer to index. This is because the database now includes large provider blocks, and the old software is not good at handling large blocks. The current plan is to have a beta release of the software (with some documentation on the changes) ready this weekend, so you can pick up this software and use it to index the RIPE database. This version will have all of the classless and other features as per the database transition plan (T1). As far as conflicts/problems in the guardian files are concerned, most of them have been resolved. There are some 15 guardian files left with problems. These guardians will be approached to correct these problems. If you have questions/comments/bugs, please report to me personally, or to any of the above lists if you think they are interesting for a larger audience. Regards, -Marten

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Re: More route flaps & inconsistent origins
by Vadim Antonov 14 Oct '94

14 Oct '94

mf> If you were homed to the NSFNET in two different places, you needed mf> unique AS's at each peering point. So you had to dump your nets mf> into two different AS's. I realize this recently changed, mf> but why deal with it now, when it will soon go away. Huh? Your nets still could originate in a single AS and as-paths should look like 690 1800 1239 690 1240 1239 --vadim

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The Top 20 and some deltas
by Tony Bates 12 Oct '94

12 Oct '94

This is an auto-generated mail on Wed Oct 12 21:10:01 MET 1994 As stated above this is auto-generated so it is not checked before it leaves my workstation. This is a list of the "Top 20" players who if CIDRizing at the AS level could make a significant gain in the size of Internet routing tables. This may be an over-estimation but it is hoped that this can act as an incentive for the "Top 20" and others to look at their CIDR capability. This report is available as: ftp://ftp.ripe.net/cidr/stats/Top-20.12Oct94 The current (and of course this one today) report is always accessible as: ftp://ftp.ripe.net/cidr/stats/Top-20 A full summary of all the ASes seen in the Internet can be seen by looking in: ftp://ftp.ripe.net/cidr/stats/AS* Please also find a summary of the last weeks changes in terms of withdrawn and added routes. Please note that this is only a snapshot but does some indication of ASes participating in CIDR. More information can be found in: ftp://ftp.ripe.net/cidr/stats/Delta.* Also, for a short time this gives details of any possibly interesting aggregates currently seen in the routing. Interesting here means not a aggregate made as a set of classful routes. This a daily snapshot of changes in classfull routes being withdrawn and added. the deltas are calculated over a rolling 7 day period. Please bear in mind this is purely a "snapshot" and a large flucuation could be caused by a connectivity problem for example. However, this does give some indication of service providers that are moving to classless routing. Top 20 Withdrawn Routes from 05Oct94 to 12Oct94 -195 AS279 SURANET-AS-2 -158 AS86 SURANET-AS -75 AS1717 RENATER -57 AS267 CICNET2-AS -40 AS1237 EUNSOL-AS -38 AS1239 SprintLink -29 AS3561 MCI-RESTON -27 AS225 VIRGINIA-AS -26 AS786 The JANET IP Service -21 AS3450 UTK -16 AS3749 TECNET -14 AS1324 NSFNETTEST29-AS -11 AS813 UUNETCA-AS1 -9 AS2652 CDAGOVN -8 AS2048 LANET-1 -6 AS1327 NSFNETTEST32-AS -5 AS3113 DOC-ESA-ASN -4 AS1251 ANBR-AS -3 AS1798 AS1798 -2 AS1776 Wirtschaftsuniversitaet Wien Top 20 Added Routes from 05Oct94 to 12Oct94 230 AS701 AlterNet 57 AS266 CICNET1-AS 55 AS2900 WN-AZ 41 AS2914 LITTLE-GARDEN 23 AS2702 INTERSERVE 21 AS1970 TAMUS-NET 18 AS2907 SINET-AS 16 AS560 NEARNET-EXT-AS 14 AS2493 FONOROLA-EAST 12 AS1204 SUNYNET-ASN-AS 10 AS3602 INSINC 9 AS3407 INTERPATH-NC 8 AS174 NYSERNET-AS 7 AS2704 HOOKUP-NET-A 6 AS2111 AS for BELNET sites connected to 5 AS1225 CICNET3-AS 4 AS271 BCNET-AS 3 AS2149 PSINET-2 2 AS22 NOSC 1 AS1793 SPRINTLINK5 List of possibly interesting aggregates --------------------------------------- aggregate origin-AS AS Description 144.223.240.0/26 AS1239 SprintLink 157.166.47.0/24 AS1686 ANS-BLK1 Here follows the last weeks "Top 20" list with the corresponding date. --- 12Oct94 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS701 1482 686 796 53.7% AlterNet AS174 1024 743 281 27.4% NYSERNET-AS AS560 638 443 195 30.6% NEARNET-EXT-AS AS1275 389 198 191 49.1% DFN-IP AS1250 328 144 184 56.1% SINGAPORE-AS AS2149 463 291 172 37.1% PSINET-2 AS1270 241 107 134 55.6% EUnet/DE AS271 242 122 120 49.6% BCNET-AS AS97 422 306 116 27.5% JVNC-AS AS372 439 327 112 25.5% NSN-AMES-AS AS2493 213 111 102 47.9% FONOROLA-EAST AS2150 212 114 98 46.2% CSUNET-SW AS279 314 226 88 28.0% SURANET-AS-2 AS1955 151 78 73 48.3% HUNGARNET AS376 137 68 69 50.4% RISQ-AS AS137 185 117 68 36.8% GARR AS1225 327 259 68 20.8% CICNET3-AS AS1329 126 59 67 53.2% NSFNETTEST34-AS AS549 241 177 64 26.6% ONET-AS AS2907 206 142 64 31.1% SINET-AS --- 11Oct94 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS701 1418 685 733 51.7% AlterNet AS174 1006 738 268 26.6% NYSERNET-AS AS560 635 440 195 30.7% NEARNET-EXT-AS AS1275 389 198 191 49.1% DFN-IP AS1250 315 145 170 54.0% SINGAPORE-AS AS2149 449 283 166 37.0% PSINET-2 AS279 499 364 135 27.1% SURANET-AS-2 AS1270 241 107 134 55.6% EUnet/DE AS271 242 122 120 49.6% BCNET-AS AS97 417 298 119 28.5% JVNC-AS AS372 428 312 116 27.1% NSN-AMES-AS AS86 448 335 113 25.2% SURANET-AS AS2493 213 110 103 48.4% FONOROLA-EAST AS2150 211 113 98 46.4% CSUNET-SW AS1955 151 78 73 48.3% HUNGARNET AS1329 131 61 70 53.4% NSFNETTEST34-AS AS376 137 68 69 50.4% RISQ-AS AS137 187 118 69 36.9% GARR AS1225 319 251 68 21.3% CICNET3-AS AS549 239 175 64 26.8% ONET-AS --- 10Oct94 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS701 1415 681 734 51.9% AlterNet AS174 982 727 255 26.0% NYSERNET-AS AS560 636 441 195 30.7% NEARNET-EXT-AS AS1275 389 198 191 49.1% DFN-IP AS2149 454 286 168 37.0% PSINET-2 AS1270 241 107 134 55.6% EUnet/DE AS1250 278 146 132 47.5% SINGAPORE-AS AS271 242 122 120 49.6% BCNET-AS AS97 419 302 117 27.9% JVNC-AS AS86 449 333 116 25.8% SURANET-AS AS372 430 321 109 25.3% NSN-AMES-AS AS2493 212 108 104 49.1% FONOROLA-EAST AS2150 211 113 98 46.4% CSUNET-SW AS279 350 259 91 26.0% SURANET-AS-2 AS1329 131 61 70 53.4% NSFNETTEST34-AS AS376 137 68 69 50.4% RISQ-AS AS137 184 116 68 37.0% GARR AS1225 322 255 67 20.8% CICNET3-AS AS2907 205 140 65 31.7% SINET-AS AS549 239 175 64 26.8% ONET-AS --- 09Oct94 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS701 1417 681 736 51.9% AlterNet AS174 992 728 264 26.6% NYSERNET-AS AS560 637 442 195 30.6% NEARNET-EXT-AS AS1275 389 198 191 49.1% DFN-IP AS2149 453 284 169 37.3% PSINET-2 AS1250 295 149 146 49.5% SINGAPORE-AS AS279 491 356 135 27.5% SURANET-AS-2 AS1270 241 107 134 55.6% EUnet/DE AS97 427 307 120 28.1% JVNC-AS AS271 242 122 120 49.6% BCNET-AS AS86 439 330 109 24.8% SURANET-AS AS372 416 309 107 25.7% NSN-AMES-AS AS2493 209 105 104 49.8% FONOROLA-EAST AS2150 211 113 98 46.4% CSUNET-SW AS1955 150 77 73 48.7% HUNGARNET AS1329 131 61 70 53.4% NSFNETTEST34-AS AS376 137 68 69 50.4% RISQ-AS AS137 184 116 68 37.0% GARR AS1225 323 255 68 21.1% CICNET3-AS AS2907 205 141 64 31.2% SINET-AS --- 08Oct94 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS701 1418 682 736 51.9% AlterNet AS174 994 733 261 26.3% NYSERNET-AS AS560 636 441 195 30.7% NEARNET-EXT-AS AS1275 389 198 191 49.1% DFN-IP AS2149 456 282 174 38.2% PSINET-2 AS279 498 362 136 27.3% SURANET-AS-2 AS1270 241 107 134 55.6% EUnet/DE AS97 421 301 120 28.5% JVNC-AS AS271 242 122 120 49.6% BCNET-AS AS372 437 322 115 26.3% NSN-AMES-AS AS86 436 327 109 25.0% SURANET-AS AS2493 209 105 104 49.8% FONOROLA-EAST AS2150 212 114 98 46.2% CSUNET-SW AS1955 152 79 73 48.0% HUNGARNET AS1329 131 61 70 53.4% NSFNETTEST34-AS AS376 137 68 69 50.4% RISQ-AS AS137 185 117 68 36.8% GARR AS1225 323 255 68 21.1% CICNET3-AS AS2907 207 142 65 31.4% SINET-AS AS549 238 174 64 26.9% ONET-AS --- 07Oct94 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS701 1417 686 731 51.6% AlterNet AS174 1015 732 283 27.9% NYSERNET-AS AS560 625 434 191 30.6% NEARNET-EXT-AS AS1275 389 198 191 49.1% DFN-IP AS1250 325 147 178 54.8% SINGAPORE-AS AS2149 463 293 170 36.7% PSINET-2 AS279 502 363 139 27.7% SURANET-AS-2 AS1270 241 107 134 55.6% EUnet/DE AS271 238 119 119 50.0% BCNET-AS AS97 418 300 118 28.2% JVNC-AS AS372 446 331 115 25.8% NSN-AMES-AS AS86 440 327 113 25.7% SURANET-AS AS2493 204 106 98 48.0% FONOROLA-EAST AS2150 205 108 97 47.3% CSUNET-SW AS1955 152 79 73 48.0% HUNGARNET AS1329 131 61 70 53.4% NSFNETTEST34-AS AS137 185 117 68 36.8% GARR AS1225 322 254 68 21.1% CICNET3-AS AS376 131 64 67 51.1% RISQ-AS AS2907 207 142 65 31.4% SINET-AS --- 06Oct94 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS701 1414 686 728 51.5% AlterNet AS174 1005 727 278 27.7% NYSERNET-AS AS1275 389 198 191 49.1% DFN-IP AS560 625 435 190 30.4% NEARNET-EXT-AS AS1250 318 141 177 55.7% SINGAPORE-AS AS2149 452 285 167 36.9% PSINET-2 AS279 506 366 140 27.7% SURANET-AS-2 AS1270 241 107 134 55.6% EUnet/DE AS97 420 301 119 28.3% JVNC-AS AS271 238 119 119 50.0% BCNET-AS AS86 449 333 116 25.8% SURANET-AS AS372 443 329 114 25.7% NSN-AMES-AS AS2493 212 108 104 49.1% FONOROLA-EAST AS2150 206 109 97 47.1% CSUNET-SW AS1955 152 79 73 48.0% HUNGARNET AS1329 131 61 70 53.4% NSFNETTEST34-AS AS137 186 118 68 36.6% GARR AS1225 322 254 68 21.1% CICNET3-AS AS376 131 64 67 51.1% RISQ-AS AS549 238 174 64 26.9% ONET-AS --- 05Oct94 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS701 1252 682 570 45.5% AlterNet AS174 1016 726 290 28.5% NYSERNET-AS AS560 622 433 189 30.4% NEARNET-EXT-AS AS1275 388 200 188 48.5% DFN-IP AS1250 327 145 182 55.7% SINGAPORE-AS AS2149 460 286 174 37.8% PSINET-2 AS279 509 363 146 28.7% SURANET-AS-2 AS1270 241 107 134 55.6% EUnet/DE AS97 421 302 119 28.3% JVNC-AS AS271 238 119 119 50.0% BCNET-AS AS372 442 328 114 25.8% NSN-AMES-AS AS86 440 331 109 24.8% SURANET-AS AS2150 209 111 98 46.9% CSUNET-SW AS2493 199 108 91 45.7% FONOROLA-EAST AS1955 150 77 73 48.7% HUNGARNET AS1329 129 60 69 53.5% NSFNETTEST34-AS AS137 186 118 68 36.6% GARR AS1225 322 254 68 21.1% CICNET3-AS AS376 131 64 67 51.1% RISQ-AS AS549 237 173 64 27.0% ONET-AS

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New Document available: ripe-182
by RIPE NCC Document Annoucement Service 06 Oct '94

06 Oct '94

New/Revised RIPE Document Announcement -------------------------------------- A revised/new document is available from the RIPE document store. Ref: ripe-182 Title: Experimental Objects and attributes for the Routing Registry Author: Elise Gerich, Laurent Joncheray Date: 3 October 1994 Format: PS=8865 TXT=2153 Obsoletes: Obsoleted by: Updates: Updated by: Old: Short content description ------------------------- This short document acts a place-holder for future extensions to the routing registry representation language as detailed in ripe-181. It gives some detail of a couple of extensions already proposed. It is expected that this document will be updated over time. FTP Access ---------- All RIPE documents and Internet RFC`s are available via anonymous FTP from host ftp.ripe.net. Type "ftp ftp.ripe.net". Login with username "anonymous" supplying your email address as the password. After logging in, type "cd ripe/docs/" followed by the command "get filename". The relevant filenames for this document are: ripe-182.txt for the ASCII version ripe-182.ps for the PostScript version Electronic Mail Retrieval of Documents -------------------------------------- Documents can also be retrieved from the RIPE document store using a mail server program. For more information on how to use the program, send email to: mail-server(a)ripe.net with "send HELP" in the body text. RIPE NCC Interactive Information Server --------------------------------------- Type "telnet info.ripe.net". This is a menu driven service allows the document store to be browsed. After reading documents you are prompted as to whether you would like to receive an email copy of the document you have just read. If you would, you simply enter your email address and the document will be mailed to you. Below are details of alternative methods of access. Gopher Access ------------- The same documents are available via a "gopher" server at "gopher gopher.ripe.net". WAIS Access ----------- There is also a "WAIS" server at wais.ripe.net, where there is a WAIS index for RIPE documents "ripe-docs.src" WWW Access ---------- For those who wish to add this home page at the RIPE NCC to their own customized home pages, it can be accessed as: http://www.ripe.net MIME Mail Reader ---------------- Below is the data which will enable a MIME compliant Mail Reader implementation to automatically retrieve the RIPE document by FTP or mail server. SEND ripe/docs/ripe-182.txt

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New Document available: ripe-181
by RIPE NCC Document Annoucement Service 06 Oct '94

06 Oct '94

New/Revised RIPE Document Announcement -------------------------------------- A revised/new document is available from the RIPE document store. Ref: ripe-181 Title: Representation of IP Routing Policies in a Routing Registry Author: Tony Bates, Elise Gerich, Laurent Joncheray, Jean-Michel Jouanigot, Daniel Karrenberg, Marten Terpstra, Jessica Yu Date: 3 October 1994 Format: PS=217237 TXT=124919 Obsoletes: ripe-081 Obsoleted by: Updates: Updated by: Old: Short content description ------------------------- This document is an update to ripe-081 and is also known as ripe-81++. This details a number of changes to the routing registry syntax and objects. FTP Access ---------- All RIPE documents and Internet RFC`s are available via anonymous FTP from host ftp.ripe.net. Type "ftp ftp.ripe.net". Login with username "anonymous" supplying your email address as the password. After logging in, type "cd ripe/docs/" followed by the command "get filename". The relevant filenames for this document are: ripe-181.txt for the ASCII version ripe-181.ps for the PostScript version Electronic Mail Retrieval of Documents -------------------------------------- Documents can also be retrieved from the RIPE document store using a mail server program. For more information on how to use the program, send email to: mail-server(a)ripe.net with "send HELP" in the body text. RIPE NCC Interactive Information Server --------------------------------------- Type "telnet info.ripe.net". This is a menu driven service allows the document store to be browsed. After reading documents you are prompted as to whether you would like to receive an email copy of the document you have just read. If you would, you simply enter your email address and the document will be mailed to you. Below are details of alternative methods of access. Gopher Access ------------- The same documents are available via a "gopher" server at "gopher gopher.ripe.net". WAIS Access ----------- There is also a "WAIS" server at wais.ripe.net, where there is a WAIS index for RIPE documents "ripe-docs.src" WWW Access ---------- For those who wish to add this home page at the RIPE NCC to their own customized home pages, it can be accessed as: http://www.ripe.net MIME Mail Reader ---------------- Below is the data which will enable a MIME compliant Mail Reader implementation to automatically retrieve the RIPE document by FTP or mail server. SEND ripe/docs/ripe-181.txt

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New Document available: ripe-122
by RIPE NCC Document Annoucement Service 06 Oct '94

06 Oct '94

New/Revised RIPE Document Announcement -------------------------------------- A revised/new document is available from the RIPE document store. Ref: ripe-122 Title: Specifying an `Internet Router' in the Routing Registry Author: Tony Bates Date: 3 October 1994 Format: PS=37970 TXT=14242 Obsoletes: Obsoleted by: Updates: Updated by: Old: Short content description ------------------------- This document specifies a simple object for detailing Internet routers with the RIPE routing registry. FTP Access ---------- All RIPE documents and Internet RFC`s are available via anonymous FTP from host ftp.ripe.net. Type "ftp ftp.ripe.net". Login with username "anonymous" supplying your email address as the password. After logging in, type "cd ripe/docs/" followed by the command "get filename". The relevant filenames for this document are: ripe-122.txt for the ASCII version ripe-122.ps for the PostScript version Electronic Mail Retrieval of Documents -------------------------------------- Documents can also be retrieved from the RIPE document store using a mail server program. For more information on how to use the program, send email to: mail-server(a)ripe.net with "send HELP" in the body text. RIPE NCC Interactive Information Server --------------------------------------- Type "telnet info.ripe.net". This is a menu driven service allows the document store to be browsed. After reading documents you are prompted as to whether you would like to receive an email copy of the document you have just read. If you would, you simply enter your email address and the document will be mailed to you. Below are details of alternative methods of access. Gopher Access ------------- The same documents are available via a "gopher" server at "gopher gopher.ripe.net". WAIS Access ----------- There is also a "WAIS" server at wais.ripe.net, where there is a WAIS index for RIPE documents "ripe-docs.src" WWW Access ---------- For those who wish to add this home page at the RIPE NCC to their own customized home pages, it can be accessed as: http://www.ripe.net MIME Mail Reader ---------------- Below is the data which will enable a MIME compliant Mail Reader implementation to automatically retrieve the RIPE document by FTP or mail server. SEND ripe/docs/ripe-122.txt

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The Top 20 and some deltas
by Tony Bates 05 Oct '94

05 Oct '94

This is an auto-generated mail on Wed Oct 5 21:10:00 MET 1994 As stated above this is auto-generated so it is not checked before it leaves my workstation. This is a list of the "Top 20" players who if CIDRizing at the AS level could make a significant gain in the size of Internet routing tables. This may be an over-estimation but it is hoped that this can act as an incentive for the "Top 20" and others to look at their CIDR capability. This report is available as: ftp://ftp.ripe.net/cidr/stats/Top-20.05Oct94 The current (and of course this one today) report is always accessible as: ftp://ftp.ripe.net/cidr/stats/Top-20 A full summary of all the ASes seen in the Internet can be seen by looking in: ftp://ftp.ripe.net/cidr/stats/AS* Please also find a summary of the last weeks changes in terms of withdrawn and added routes. Please note that this is only a snapshot but does some indication of ASes participating in CIDR. More information can be found in: ftp://ftp.ripe.net/cidr/stats/Delta.* Also, for a short time this gives details of any possibly interesting aggregates currently seen in the routing. Interesting here means not a aggregate made as a set of classful routes. This a daily snapshot of changes in classfull routes being withdrawn and added. the deltas are calculated over a rolling 7 day period. Please bear in mind this is purely a "snapshot" and a large flucuation could be caused by a connectivity problem for example. However, this does give some indication of service providers that are moving to classless routing. Top 20 Withdrawn Routes from 28Sep94 to 05Oct94 -135 AS701 AlterNet -130 AS1239 SprintLink -62 AS2572 MORENET -49 AS279 SURANET-AS-2 -24 AS2699 BBN-DSI1 -14 AS3602 INSINC -12 AS1204 SUNYNET-ASN-AS -11 AS19 CSS-DOMAIN -10 AS2111 AS for BELNET sites connected to -8 AS2611 AS for BELNET sites connected to -5 AS2048 LANET-1 -4 AS517 XLINK-UKA -3 AS2505 JNIC-ASN -2 AS1729 TIPnet (Unisource) -1 AS1322 NSFNETTEST27-AS Top 20 Added Routes from 28Sep94 to 05Oct94 75 AS1790 SPRINTLINK2 40 AS3741 IS 36 AS2149 PSINET-2 30 AS684 MBNET-AS 23 AS271 BCNET-AS 22 AS813 CANET-ASN 17 AS1324 NSFNETTEST29-AS 16 AS1717 RENATER 13 AS568 SUMNET-AS 11 AS1251 ANBR-AS 10 AS1327 NSFNETTEST32-AS 9 AS2493 FONOROLA-EAST 8 AS378 ILAN 7 AS2150 CSUNET-SW 6 AS1103 SURFnet IP 5 AS1225 CICNET3-AS 4 AS1759 The DataNet IP Service 3 AS3673 INTERACCESS 2 AS22 NOSC 1 AS2706 HKSUPER List of possibly interesting aggregates --------------------------------------- aggregate origin-AS AS Description 144.223.240.0/26 AS1239 SprintLink 144.228.73.96/30 AS3734 SJEN 157.166.47.0/24 AS1686 ANS-BLK1 199.201.64.6/31 AS3708 FF-ASN Here follows the last weeks "Top 20" list with the corresponding date. --- 05Oct94 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS701 1252 682 570 45.5% AlterNet AS174 1016 726 290 28.5% NYSERNET-AS AS560 622 433 189 30.4% NEARNET-EXT-AS AS1275 388 200 188 48.5% DFN-IP AS1250 327 145 182 55.7% SINGAPORE-AS AS2149 460 286 174 37.8% PSINET-2 AS279 509 363 146 28.7% SURANET-AS-2 AS1270 241 107 134 55.6% EUnet/DE AS97 421 302 119 28.3% JVNC-AS AS271 238 119 119 50.0% BCNET-AS AS372 442 328 114 25.8% NSN-AMES-AS AS86 440 331 109 24.8% SURANET-AS AS2150 209 111 98 46.9% CSUNET-SW AS2493 199 108 91 45.7% FONOROLA-EAST AS1955 150 77 73 48.7% HUNGARNET AS1329 129 60 69 53.5% NSFNETTEST34-AS AS137 186 118 68 36.6% GARR AS1225 322 254 68 21.1% CICNET3-AS AS376 131 64 67 51.1% RISQ-AS AS549 237 173 64 27.0% ONET-AS --- 04Oct94 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS701 1407 683 724 51.5% AlterNet AS174 1001 718 283 28.3% NYSERNET-AS AS1275 388 200 188 48.5% DFN-IP AS560 619 432 187 30.2% NEARNET-EXT-AS AS1250 311 142 169 54.3% SINGAPORE-AS AS2149 448 286 162 36.2% PSINET-2 AS279 503 357 146 29.0% SURANET-AS-2 AS1270 242 108 134 55.4% EUnet/DE AS271 238 119 119 50.0% BCNET-AS AS97 419 301 118 28.2% JVNC-AS AS86 447 334 113 25.3% SURANET-AS AS372 438 328 110 25.1% NSN-AMES-AS AS2150 201 106 95 47.3% CSUNET-SW AS2493 198 105 93 47.0% FONOROLA-EAST AS1955 151 78 73 48.3% HUNGARNET AS1329 129 60 69 53.5% NSFNETTEST34-AS AS1225 323 255 68 21.1% CICNET3-AS AS376 131 64 67 51.1% RISQ-AS AS137 180 114 66 36.7% GARR AS549 234 170 64 27.4% ONET-AS --- 03Oct94 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS701 1403 681 722 51.5% AlterNet AS174 954 704 250 26.2% NYSERNET-AS AS1275 388 200 188 48.5% DFN-IP AS560 621 435 186 30.0% NEARNET-EXT-AS AS1250 312 147 165 52.9% SINGAPORE-AS AS2149 444 280 164 36.9% PSINET-2 AS279 496 356 140 28.2% SURANET-AS-2 AS1270 242 108 134 55.4% EUnet/DE AS271 238 119 119 50.0% BCNET-AS AS97 414 298 116 28.0% JVNC-AS AS372 445 332 113 25.4% NSN-AMES-AS AS86 435 326 109 25.1% SURANET-AS AS2150 202 108 94 46.5% CSUNET-SW AS2493 168 83 85 50.6% FONOROLA-EAST AS1955 150 77 73 48.7% HUNGARNET AS1329 124 56 68 54.8% NSFNETTEST34-AS AS376 129 62 67 51.9% RISQ-AS AS137 182 115 67 36.8% GARR AS1225 318 253 65 20.4% CICNET3-AS AS549 234 170 64 27.4% ONET-AS --- 02Oct94 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS701 1403 681 722 51.5% AlterNet AS174 948 701 247 26.1% NYSERNET-AS AS1275 388 200 188 48.5% DFN-IP AS560 620 433 187 30.2% NEARNET-EXT-AS AS2149 450 280 170 37.8% PSINET-2 AS1250 302 149 153 50.7% SINGAPORE-AS AS279 499 359 140 28.1% SURANET-AS-2 AS1270 242 108 134 55.4% EUnet/DE AS271 237 118 119 50.2% BCNET-AS AS97 409 291 118 28.9% JVNC-AS AS86 436 327 109 25.0% SURANET-AS AS372 412 313 99 24.0% NSN-AMES-AS AS2150 202 108 94 46.5% CSUNET-SW AS2493 197 105 92 46.7% FONOROLA-EAST AS1955 150 77 73 48.7% HUNGARNET AS1329 124 56 68 54.8% NSFNETTEST34-AS AS1225 319 251 68 21.3% CICNET3-AS AS376 129 62 67 51.9% RISQ-AS AS137 181 114 67 37.0% GARR AS549 233 169 64 27.5% ONET-AS --- 01Oct94 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS701 1404 681 723 51.5% AlterNet AS174 957 713 244 25.5% NYSERNET-AS AS1275 388 200 188 48.5% DFN-IP AS560 619 433 186 30.0% NEARNET-EXT-AS AS1250 309 148 161 52.1% SINGAPORE-AS AS2149 435 286 149 34.3% PSINET-2 AS279 498 359 139 27.9% SURANET-AS-2 AS1270 242 108 134 55.4% EUnet/DE AS271 238 119 119 50.0% BCNET-AS AS97 415 299 116 28.0% JVNC-AS AS86 441 328 113 25.6% SURANET-AS AS372 437 327 110 25.2% NSN-AMES-AS AS2150 203 109 94 46.3% CSUNET-SW AS2493 196 104 92 46.9% FONOROLA-EAST AS1955 150 77 73 48.7% HUNGARNET AS137 184 115 69 37.5% GARR AS1329 129 60 69 53.5% NSFNETTEST34-AS AS1225 321 253 68 21.2% CICNET3-AS AS376 129 62 67 51.9% RISQ-AS AS549 234 170 64 27.4% ONET-AS --- 30Sep94 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS701 1404 680 724 51.6% AlterNet AS174 1001 718 283 28.3% NYSERNET-AS AS1275 388 200 188 48.5% DFN-IP AS560 621 435 186 30.0% NEARNET-EXT-AS AS1250 316 141 175 55.4% SINGAPORE-AS AS2149 444 284 160 36.0% PSINET-2 AS279 493 354 139 28.2% SURANET-AS-2 AS1270 242 108 134 55.4% EUnet/DE AS372 441 330 111 25.2% NSN-AMES-AS AS97 409 301 108 26.4% JVNC-AS AS271 215 113 102 47.4% BCNET-AS AS86 407 306 101 24.8% SURANET-AS AS2150 201 108 93 46.3% CSUNET-SW AS2493 192 104 88 45.8% FONOROLA-EAST AS1955 150 77 73 48.7% Computer and Automation Institute AS1329 129 60 69 53.5% NSFNETTEST34-AS AS1225 320 252 68 21.2% CICNET3-AS AS376 129 62 67 51.9% RISQ-AS AS137 186 120 66 35.5% GARR AS549 233 169 64 27.5% ONET-AS --- 29Sep94 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS701 1390 670 720 51.8% AlterNet AS174 1008 729 279 27.7% NYSERNET-AS AS1275 388 200 188 48.5% DFN-IP AS560 620 434 186 30.0% NEARNET-EXT-AS AS1250 308 146 162 52.6% SINGAPORE-AS AS2149 441 284 157 35.6% PSINET-2 AS279 498 358 140 28.1% SURANET-AS-2 AS1270 238 104 134 56.3% EUnet/DE AS97 411 296 115 28.0% JVNC-AS AS86 437 325 112 25.6% SURANET-AS AS372 439 330 109 24.8% NSN-AMES-AS AS271 214 112 102 47.7% BCNET-AS AS2150 201 108 93 46.3% CSUNET-SW AS2493 191 104 87 45.5% FONOROLA-EAST AS1239 395 315 80 20.3% SprintLink AS1955 150 77 73 48.7% Computer and Automation Institute AS1329 129 60 69 53.5% NSFNETTEST34-AS AS1225 313 245 68 21.7% CICNET3-AS AS376 129 62 67 51.9% RISQ-AS AS549 232 168 64 27.6% ONET-AS --- 28Sep94 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS701 1387 674 713 51.4% AlterNet AS174 1013 732 281 27.7% NYSERNET-AS AS1275 388 200 188 48.5% DFN-IP AS560 621 434 187 30.1% NEARNET-EXT-AS AS279 558 390 168 30.1% SURANET-AS-2 AS1250 291 141 150 51.5% SINGAPORE-AS AS2149 424 283 141 33.3% PSINET-2 AS1270 242 108 134 55.4% EUnet/DE AS97 410 295 115 28.0% JVNC-AS AS372 440 330 110 25.0% NSN-AMES-AS AS86 432 324 108 25.0% SURANET-AS AS271 215 113 102 47.4% BCNET-AS AS2150 202 108 94 46.5% CSUNET-SW AS2493 190 107 83 43.7% FONOROLA-EAST AS1239 391 312 79 20.2% SprintLink AS1955 148 76 72 48.6% Computer and Automation Institute AS1329 127 59 68 53.5% NSFNETTEST34-AS AS376 127 60 67 52.8% RISQ-AS AS1225 317 250 67 21.1% CICNET3-AS AS137 186 120 66 35.5% GARR

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Route flaps & inconsistent origins
by Havard Eidnes 01 Oct '94

01 Oct '94

Hi, we have had some problems recently apparently caused by route flapping, and this inspired me to create a setup where I can log the "route flaps of the world" and then do some perl programming to analyze the debug logs. After about a day of programming I now have a handfull of scripts which are able to post-process the output of "debug ip bgp updates" on a Cisco router. The router I am using to log this with has a direct peer with nord-gw.nordu.net, that should be taken into account when looking at the results (if I'm not mistaken, to some extent we'll see more local problems than those on remote networks). Processing yesterday's log (covering the interval Sep 29 04:05 to Sep 30 04:05) produced the following "top 20" list of ASes injecting route flaps as seen from our perspective: Origin(s) flaps retr unrch dests AS AS Description 544 26070 264 266 109 544 The DataNet IP Service 719 17035 1 1 13 719 LANLINK autonomous system 1740 11880 2624 2623 186 1740 CERFNET 1717 7716 2645 2639 574 1717 RENATER 1221:297 6626 1155 1157 254 1221 AARNET-AS 1221:297 6626 1155 1157 254 297 NSN-UMD-AS 174:2149 5263 1705 1704 140 2149 PSINET-2 174:2149 5263 1705 1704 140 174 NYSERNET-AS 86 2890 489 488 113 86 SURANET-AS 2149:174 2604 769 769 178 2149 PSINET-2 2149:174 2604 769 769 178 174 NYSERNET-AS 2551 2354 318 318 174 2551 NETCOM-AS 372:297 2342 333 333 109 372 NSN-AMES-AS 372:297 2342 333 333 109 297 NSN-UMD-AS 297:1221 2168 337 346 95 1221 AARNET-AS 297:1221 2168 337 346 95 297 NSN-UMD-AS 372 2024 393 392 311 372 NSN-AMES-AS 701 1664 525 525 170 701 AlterNet 813 1589 617 615 83 813 CANET-ASN 2915 1488 391 391 83 2915 SPIN-NET Legend: "Origin(s)" are the AS or ASes seen as "origin" of routing updates (essentially the last element in the logged path). "flaps" is the sum of "retr" and the number of times the route was updated (e.g. new path) "retr" is the number of times a route was withdrawn (retracted) "unrch" is the number of withdrawals which caused loss of connectivity for a destination "dests" is the number of destinations involved in route flaps Excluded from this picture are any routes involving as-sets (there are a number of routing flaps involving them as well, I'll see about analyzing them separately...). We are (as I write) trying to sort out the nordic-internal problem involving the two on the top of the list. One thing I want to draw to your attention, thogh, is the fact that many destinations are apparently originated by more than one AS. I was under the impression that this is an illegal or highly undesireable configuration. Attached below you will find a more detailed report showing the number of times each individual path was announced for each of the entries on the "top 20" list, I can also easily (on request) produce a "per-network" report for any given AS. It would seem that even beyond AS 1800 there are severe instabilities in the routing. Comments? - Havard PS. Maybe this should be redirected somewhere else than bgpd? nanog? iepg? PPS. I am willing to give away my scripts to anyone asking (privately) for them. Note that they're quick hacks and still evolving... ------------------------------ Origin(s) flaps retr unrch dests AS AS Description 544 26070 264 266 109 544 The DataNet IP Service Count Path 244 2603 1759 544 12734 2603 1741 1759 544 12840 2603 1741 544 5 2603 1805 1800 1239 1280 701 1759 544 Origin(s) flaps retr unrch dests AS AS Description 719 17035 1 1 13 719 LANLINK autonomous system Count Path 17045 2603 1741 719 1 2603 3224 2043 1128 286 790 719 Origin(s) flaps retr unrch dests AS AS Description 1740 11880 2624 2623 186 1740 CERFNET Count Path 1029 2603 1805 1800 1133 690 1740 5071 2603 1805 1800 690 1740 937 2603 1755 1800 690 1740 1947 2603 1805 1800 701 690 1740 173 2603 1755 1800 701 690 1740 51 2603 1755 1800 1133 690 1740 82 2603 1805 1800 1239 1280 1740 15 2603 1805 1800 1133 1674 690 1740 5 2603 1755 1800 1133 1674 690 1740 15 2603 1755 1800 1239 1280 1740 Origin(s) flaps retr unrch dests AS AS Description 1717 7716 2645 2639 574 1717 RENATER Count Path 2174 2603 3224 2043 1128 1755 1717 2486 2603 1755 1717 479 2603 3224 2043 1128 1133 1800 1755 1717 Origin(s) flaps retr unrch dests AS AS Description 1221:297 6626 1155 1157 254 1221 AARNET-AS Count Path 1885 2603 1805 1800 690 372 1221 846 2603 1805 1800 701 690 372 1221 272 2603 1805 1800 1133 690 372 1221 32 2603 1755 1800 701 690 372 1221 31 2603 1755 1800 690 372 1221 4 2603 1755 1800 1133 690 372 1221 1 2603 1805 1800 1239 1240 690 372 1221 1 2603 1755 1800 1239 1240 690 372 1221 Origin(s) flaps retr unrch dests AS AS Description 1221:297 6626 1155 1157 254 297 NSN-UMD-AS Count Path 582 2603 1805 1800 690 297 1035 2603 1805 1800 701 690 297 427 2603 1805 1800 1133 690 297 347 2603 1755 1800 701 690 297 6 2603 1755 1800 690 297 2 2603 1805 1800 1239 690 297 Origin(s) flaps retr unrch dests AS AS Description 174:2149 5263 1705 1704 140 2149 PSINET-2 Count Path 332 2603 1805 1800 1133 690 2149 397 2603 1805 1800 690 2149 154 2603 1805 1800 701 690 2149 58 2603 1755 1800 701 690 2149 93 2603 1755 1800 1133 690 2149 32 2603 1805 1800 1239 1240 690 2149 5 2603 1755 1800 1239 1240 690 2149 51 2603 1755 1800 690 2149 Origin(s) flaps retr unrch dests AS AS Description 174:2149 5263 1705 1704 140 174 NYSERNET-AS Count Path 1432 2603 1805 1800 174 335 2603 1755 1800 174 229 2603 1805 1800 690 174 113 2603 1805 1800 701 690 174 108 2603 3224 2043 1128 1133 1800 174 43 2603 1755 1800 690 174 22 2603 1755 1800 701 690 174 86 2603 1805 1800 1239 1280 174 33 2603 1755 1800 1239 1280 174 25 2603 1805 1800 1133 690 174 8 2603 1805 1800 690 701 174 2 2603 1755 1800 690 701 174 1 2603 1755 1800 1133 690 174 Origin(s) flaps retr unrch dests AS AS Description 86 2890 489 488 113 86 SURANET-AS Count Path 93 2603 1755 1800 86 857 2603 1805 1800 86 25 2603 1805 1800 690 279 86 352 2603 1805 1800 690 279 3561 86 84 2603 1805 1800 1133 690 279 3561 86 72 2603 1755 1800 690 279 3561 86 80 2603 1805 1800 701 690 86 674 2603 1805 1800 690 86 44 2603 1755 1800 690 86 32 2603 1805 1800 1239 1280 1957 690 279 3561 86 28 2603 1805 1800 1239 1280 1957 690 86 41 2603 1805 1800 1133 690 86 3 2603 1755 1800 1133 690 279 3561 86 3 2603 1755 1800 701 690 279 3561 86 5 2603 1755 1800 1239 1280 1957 690 279 3561 86 3 2603 1755 1800 690 279 86 2 2603 1805 1800 1133 690 279 86 12 2603 1805 1800 1239 1280 1957 690 279 86 3 2603 1805 1800 701 690 279 86 1 2603 1755 1800 701 690 86 2 2603 1755 1800 1239 1280 1957 690 86 1 2603 1755 1800 1239 1280 1957 690 279 86 Origin(s) flaps retr unrch dests AS AS Description 2149:174 2604 769 769 178 2149 PSINET-2 Count Path 220 2603 1805 1800 1133 690 2149 35 2603 1755 1800 1133 690 2149 116 2603 1805 1800 701 690 2149 215 2603 1805 1800 690 2149 37 2603 1755 1800 690 2149 27 2603 1755 1800 701 690 2149 8 2603 1805 1800 1239 1240 690 2149 2 2603 1755 1800 1239 1240 690 2149 2 2603 1805 1800 1133 1674 690 2149 Origin(s) flaps retr unrch dests AS AS Description 2149:174 2604 769 769 178 174 NYSERNET-AS Count Path 709 2603 1805 1800 174 47 2603 1805 1800 1239 1280 174 118 2603 1805 1800 690 174 158 2603 1755 1800 174 18 2603 1755 1800 1239 1280 174 55 2603 3224 2043 1128 1133 1800 174 42 2603 1805 1800 701 690 174 10 2603 1755 1800 701 690 174 13 2603 1755 1800 690 174 4 2603 1805 1800 1133 690 174 Origin(s) flaps retr unrch dests AS AS Description 2551 2354 318 318 174 2551 NETCOM-AS Count Path 708 2603 1805 1800 690 1321 2551 886 2603 1805 1800 2551 158 2603 1805 1800 701 690 2551 91 2603 1805 1800 690 2551 22 2603 1805 1800 701 690 1321 2551 93 2603 1755 1800 2551 30 2603 3224 2043 1128 1133 2551 20 2603 3224 2043 1128 1133 1800 2551 9 2603 1805 1800 1239 1280 2551 3 2603 1755 1800 701 690 2551 7 2603 1755 1800 690 1321 2551 2 2603 1755 1800 690 2551 3 2603 1805 1800 1133 690 1321 2551 3 2603 1755 1800 701 690 1321 2551 1 2603 1755 1800 1239 1280 2551 Origin(s) flaps retr unrch dests AS AS Description 372:297 2342 333 333 109 372 NSN-AMES-AS Count Path 163 2603 1805 1800 1133 690 372 1067 2603 1805 1800 690 372 407 2603 1805 1800 701 690 372 66 2603 1755 1800 701 690 372 51 2603 1755 1800 1133 690 372 64 2603 1755 1800 690 372 Origin(s) flaps retr unrch dests AS AS Description 372:297 2342 333 333 109 297 NSN-UMD-AS Count Path 182 2603 1805 1800 690 297 3 2603 1805 1800 1133 690 297 3 2603 1755 1800 690 297 3 2603 1805 1800 701 690 297 Origin(s) flaps retr unrch dests AS AS Description 297:1221 2168 337 346 95 1221 AARNET-AS Count Path 567 2603 1805 1800 690 372 1221 253 2603 1805 1800 701 690 372 1221 97 2603 1805 1800 1133 690 372 1221 1 2603 1755 1800 701 690 372 1221 Origin(s) flaps retr unrch dests AS AS Description 297:1221 2168 337 346 95 297 NSN-UMD-AS Count Path 93 2603 1755 1800 690 297 189 2603 1805 1800 690 297 249 2603 1805 1800 701 690 297 221 2603 1805 1800 1133 690 297 161 2603 1755 1800 701 690 297 Origin(s) flaps retr unrch dests AS AS Description 372 2024 393 392 311 372 NSN-AMES-AS Count Path 315 2603 1805 1800 1133 690 372 515 2603 1755 1800 690 372 614 2603 1805 1800 690 372 136 2603 1805 1800 701 690 372 50 2603 1755 1800 701 690 372 1 2603 1755 1800 1133 690 372 Origin(s) flaps retr unrch dests AS AS Description 701 1664 525 525 170 701 AlterNet Count Path 20 2603 1805 1800 1239 1280 701 590 2603 1805 1800 701 47 2603 3224 2043 1128 1133 1800 701 102 2603 1755 1800 701 59 2603 3224 2043 1128 1133 701 283 2603 1805 1800 690 701 39 2603 1805 1800 1133 1674 690 701 Origin(s) flaps retr unrch dests AS AS Description 813 1589 617 615 83 813 CANET-ASN Count Path 588 2603 1805 1800 701 813 232 2603 1755 1800 701 813 39 2603 1805 1800 1239 1280 701 813 47 2603 3224 2043 1128 1133 1800 701 813 48 2603 3224 2043 1128 1133 701 813 10 2603 1805 1800 690 701 813 8 2603 1755 1800 1239 1280 701 813 1 2603 1755 1800 690 701 813 2 2603 1805 1800 1133 690 701 813 Origin(s) flaps retr unrch dests AS AS Description 2915 1488 391 391 83 2915 SPIN-NET Count Path 121 2603 1805 1800 1133 690 2149 174 2713 2915 121 2603 1755 1800 1133 690 2149 174 2713 2915 375 2603 1755 1800 174 2713 2915 379 2603 1805 1800 174 2713 2915 12 2603 3224 2043 1128 1133 1800 174 2713 2915 44 2603 1805 1800 690 2149 174 2713 2915 39 2603 1805 1800 701 690 2149 174 2713 2915 1 2603 1805 1800 1239 1280 174 2713 2915 2 2603 1755 1800 1239 1280 174 2713 2915 3 2603 1755 1800 690 2149 174 2713 2915

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