Peter,
We are at the point where action has to be taken, either to get CIDR the "proper way", or by forced proxy aggregation at some places in the Internet.
Let me suggest to pursue a combination of both. Folks who are willing and able to cooperate should pursue the "proper way", and the rest may be subject of proxy aggregation (which may be "forced"). Yakov.
Fine with me, but WHO does the pushing? People that already have all thedata and are registring routes like Merit? -Peter
Peter, this is a lot like traveling at high rates of speed. The "market" has left a brick on the throttle. CIDR is a bit like a hand brake. -IF- we pull up to a full stop, its likely the brake will fail, we drop the transmission on the street and/or the engine blows up. What I have seen this two weeks is a tamping on the brakes to see that they work, then increasing presure to start slowing down. Expect more nets to fall off, perhaps to the point that we reach parity with the adds. I'll be real pleased (and a bit surprised) if we actually reduce the total size of the tables. -- Regards, Bill Manning
Expect more nets to fall off, perhaps to the point that we reach parity with the adds. I'll be real pleased (and a bit surprised) if we actually reduce the total size of the tables. Actually, I've been watching route-server.cerf.net. We hit 20k the week of IETF and have broken 21k. We have seen some fluctuation in size, but it's not clear if this is due to CIDR or normal weekly bouncing. Tony
From: Tony Li <tli@cisco.com> Expect more nets to fall off, perhaps to the point that we reach parity with the adds. I'll be real pleased (and a bit surprised) if we actually reduce the total size of the tables. Actually, I've been watching route-server.cerf.net. We hit 20k the week of IETF and have broken 21k. We have seen some fluctuation in size, but it's not clear if this is due to CIDR or normal weekly bouncing. Tony Sigh. We have NOT broken 21k. This is to say that we've been sorta keeping up. This is good. But we need to do better. I wish I could type. Tony
Peter,
We are at the point where action has to be taken, either to get CIDR the "proper way", or by forced proxy aggregation at some places in the Internet.
Let me suggest to pursue a combination of both. Folks who are willing and able to cooperate should pursue the "proper way", and the rest may be subject of proxy aggregation (which may be "forced"). Yakov.
Fine with me, but WHO does the pushing?
People that already have all thedata and are registring routes like Merit?
-Peter
Funny you should mention Merit. We have been contacting the regionals and working with them to move to BGP4 (if they have not) and to aggregate (if they have BGP4). Are other transit nets working with their feeder ASs? --Elise
Peter,
We are at the point where action has to be taken, either to get CIDR the "proper way", or by forced proxy aggregation at some places in the Internet.
Let me suggest to pursue a combination of both. Folks who are willing and able to cooperate should pursue the "proper way", and the rest may be subject of proxy aggregation (which may be "forced"). Yakov.
Fine with me, but WHO does the pushing?
People that already have all thedata and are registring routes like Merit?
-Peter
Peter, When I checked today I noticed that there are about 1,200 more specific routes that are covered by aggregates (unless my perl code is broken). I suspect most of these could be withdrawn but it may be that providers are still waiting to see if any bad things happen. Certainly dropping another 1,000 would help. It is hard to critisize people who are "doing the right thing" for doing the right thing cautiously. Then again it isn't hard to get annoyed at those who are doing nothing, but I'm not sure who that would be. Curtis
Could the RIPE and Merit folks please analyze the current routing tables looking for the largest blocks of addresses that could be aggregated and determine who they belong to? This way we can look for maximum leverage. I know you guys don't want to hear this, but it is a good idea to look for similar leverage via renumbering. If every provider did a quick scan of their customners with pre-CIDR allocated class Bs and Cs, figured out how many hosts there are withing each of these network numbers, and contacted those who have fewer than (let's start low) 10 hosts and got them to renumber, we could get real savings. How many class Cs are out there to service a slip line going to someone's house and a few machines? We are in the middle of renumbering a couple of K-12 nets like this in New Mexico, placing them within a CIDR block (thanks to Phil Wood/LANL). The work takes a short time (small number of hosts). Net effect will be these routes turn into vapor. Think globally, act locally, peter
"Peter S. Ford" <peter@goshawk.lanl.gov> writes:
Could the RIPE and Merit folks please analyze the current routing tables looking for the largest blocks of addresses that could be aggregated and determine who they belong to?
This way we can look for maximum leverage.
We are doing this daily on a per AS basis assuming no holes. It can be found in directory ftp.ripe.net:cidr/stats. I think it is up to the ASes to do it. Here is tonights version. The "bottom line" (literally) is interesting. Comments welcome. ASnum NetsNow NetsCIDR % Gain Description AS701 1204 532 55.8% ALTERNET-AS AS174 1134 756 33.3% NYSERNET-AS AS372 977 717 26.6% NSN-AMES-AS AS1717 747 518 30.7% RENATER AS19 632 493 22.0% CSS-DOMAIN AS786 590 277 53.1% The JANET IP Service AS2551 571 283 50.4% NETCOM-AS AS560 569 417 26.7% NEARNET-EXT-AS AS1225 538 325 39.6% CICNET3-AS AS200 525 380 27.6% BARRNET-AS AS1275 520 251 51.7% DFN-IP AS209 452 345 23.7% WESTNET-EAST AS279 434 320 26.3% SURANET-AS-2 AS1270 386 197 49.0% EUnet/DE AS114 385 309 19.7% SESQUINET-AS AS86 366 312 14.8% SURANET-AS AS600 340 200 41.2% OARNET-AS AS1740 314 270 14.0% CERFNET AS517 297 143 51.9% XLINK-UKA AS1849 296 180 39.2% PIPEX, Public IP EXchange AS1239 293 218 25.6% SprintLink AS97 288 210 27.1% JVNC-AS AS685 253 174 31.2% NWNET-AS AS81 252 110 56.3% CONCERT AS204 246 199 19.1% PSCNET-AS AS271 212 95 55.2% BCNET-AS AS93 209 152 27.3% MIDNET-AS AS210 195 149 23.6% WESTNET-WEST AS137 193 122 36.8% GARR AS1290 167 109 34.7% EUNet GB AS2907 166 103 38.0% SINET-AS AS297 160 126 21.2% NSN-UMD-AS AS1250 158 81 48.7% SINGAPORE-AS AS2150 153 73 52.3% CSUNET-SW AS237 143 110 23.1% NSFNETTEST14-AS AS568 142 127 10.6% SUMNET-AS AS549 138 120 13.0% ONET-AS AS1257 134 107 20.1% SWIPnet Swedish IP Network AS766 129 71 45.0% RedIRIS Autonomous System AS1899 126 103 18.3% Fnet, EUnet-France AS813 116 82 29.3% CANET-ASN AS267 112 94 16.1% CICNET2-AS AS1955 108 47 56.5% Computer and Automation Institute AS1836 106 77 27.4% EUnet/CH Autonomous System AS1887 105 49 53.3% NASK Polish Research and Academic Comput AS559 92 65 29.3% SWITCH, Swiss Academic and Research Netw AS2018 87 68 21.8% UNINET-ZA AS1213 87 22 74.7% HEAnet autonomous system AS719 83 56 32.5% LANLINK autonomous system AS1267 83 63 24.1% I2U Autonomous System AS1251 81 61 24.7% ANBR-AS AS555 80 46 42.5% MSCNET-AS AS1329 80 31 61.3% NSFNETTEST34-AS AS1901 77 57 26.0% EUnet Austria AS2118 75 52 30.7% RIPE-ASNBLOCK2 AS1902 75 54 28.0% CESNET backbone A - EBONE AS378 72 47 34.7% ILAN AS376 72 35 51.4% RISQ-AS AS2548 72 46 36.1% DIGEX-AS AS2044 72 40 44.4% WORLDNET-AS AS2116 71 40 43.7% EUnet Norway AS293 67 59 11.9% ESNET-WEST-AS AS1237 67 33 50.7% EUNSOL-AS AS2109 66 37 43.9% DKnet, EUnet Denmark AS591 62 44 29.0% NSTN-AS AS2497 62 49 21.0% JNIC-ASN AS1204 62 37 40.3% SUNYNET-ASN-AS AS2699 60 48 20.0% BBN-DSI1 AS1890 60 38 36.7% NLnet Autonomous System AS2119 56 34 39.3% TelePost IP net AS1930 56 49 12.5% RCCN-NET AS1323 56 45 19.6% NSFNETTEST28-AS AS2493 55 34 38.2% FONOROLA-EAST AS1741 52 42 19.2% FUNET autonomous system AS1891 51 21 58.8% EUnet Belgium AS AS760 49 40 18.4% University of Vienna, Austria AS790 48 34 29.2% EUnet Finland AS1103 48 41 14.6% SURFnet IP AS22 47 41 12.8% NOSC AS1982 47 40 14.9% ASN-NWNEXUS AS1241 47 27 42.6% FORTHnet Greek IP Service Provider AS2905 46 30 34.8% TICSA-ASN AS1332 45 39 13.3% NSFNETTEST37-AS AS542 43 33 23.3% ARNET AS1729 42 40 4.8% TIPnet - Unidata IP services AS2917 37 14 62.2% oleANe, Groupe APYSOFT AS1759 37 26 29.7% The DataNet IP Service AS1331 36 25 30.6% NSFNETTEST36-AS AS1327 35 26 25.7% NSFNETTEST32-AS AS2915 33 29 12.1% SPIN-NET AS2380 33 18 45.5% ESTNET Autonomous System AS2895 31 16 48.4% FREEnet AS2386 31 21 32.3% INS-AS AS1328 31 29 6.5% NSFNETTEST33-AS AS789 30 24 20.0% IN2P3 AS544 30 26 13.3% The DataNet IP Service AS2048 29 28 3.4% LANET-1 AS164 29 26 10.3% DDN-MB-AS AS2568 27 17 37.0% CTSNET AS1967 27 18 33.3% TR-NET AS2529 26 18 30.8% Demon Internet Ltd AS1324 26 24 7.7% NSFNETTEST29-AS AS803 25 23 8.0% SASK-NET-AS AS2277 25 22 12.0% ECUANET AS2865 24 13 45.8% NATVERK-C, UDAC AS2572 24 21 12.5% MORENET AS2107 24 17 29.2% The ARNES IP Service AS1312 23 20 13.0% VA-TECH-AS AS684 22 19 13.6% MBNET-AS AS2836 22 20 9.1% SUNET-STHLM AS1654 22 12 45.5% NORDUnet Iceland, Poland and Baltic AS2902 21 15 28.6% WN-WY AS2819 21 14 33.3% EUnet Czechia AS AS224 21 21 0.0% UNINETT, The Norwegian University & Rese AS2111 21 18 14.3% AS for BELNET sites connected to Leuven AS771 20 20 0.0% NSN-RICE-AS AS286 20 15 25.0% EUnet-central AS AS2702 20 14 30.0% INTERSERVE AS2611 20 13 35.0% AS for BELNET sites connected to Brussel AS3404 19 19 0.0% COLORADOCOOP AS2110 19 12 36.8% IEunet (EUnet/Ireland) backbone AS AS2765 18 14 22.2% CONNECTED AS2637 18 14 22.2% GEORGIA-TECH AS184 18 18 0.0% NSFNETTEST4-AS AS1752 18 14 22.2% BT main internal data network AS278 17 15 11.8% RAM-AS AS2125 17 12 29.4% EUNET-WIN AS1754 17 17 0.0% DESY-HAMBURG AS2715 16 15 6.2% REDERIO-AS AS2134 16 11 31.2% EUnet-SPAIN AS AS2120 16 7 56.2% DAXnet AS2043 16 11 31.2% European Multiprotocol Backbone AS175 16 13 18.8% AFWL-AS AS1112 16 7 56.2% Montanuniversitaet Leoben, Austria AS800 15 12 20.0% NLNET-AS AS35 15 13 13.3% MICATON AS3407 15 13 13.3% INTERPATH-NC AS2772 15 10 33.3% HKIGS AS195 15 7 53.3% SDSC-AS AS1705 15 11 26.7% GM-INDY-NET AS1662 15 11 26.7% ANS-BLK1 AS1333 15 12 20.0% NSFNETTEST38-AS AS1326 15 12 20.0% NSFNETTEST31-AS AS1274 15 11 26.7% GMD AS577 14 7 50.0% CA-NET-AS AS513 14 13 7.1% CERN/HEPNET AS2012 14 13 7.1% UNINET1 AS1205 14 9 35.7% Johannes Kepler University AS2607 13 10 23.1% Slovak technical university AS109 13 12 7.7% CISCOSYSTEMS AS68 12 12 0.0% LANL-INET-AS AS3463 12 11 8.3% ACES-AS AS1321 12 10 16.7% NSFNETTEST26-AS AS3380 11 6 45.5% PPPL-AS1 AS266 11 11 0.0% CICNET1-AS AS2602 11 10 9.1% RESTENA AS1227 11 11 0.0% SDSC-TEST1-AS AS807 10 10 0.0% CANET-ASN AS714 10 6 40.0% APPLE-ENGINEERING-AS AS3403 10 10 0.0% TIAC AS2552 10 10 0.0% WUSTL-ASN AS1236 10 10 0.0% CONTEL-WTPAS-ASN AS2631 9 4 55.6% DISCOVERY-AS AS233 9 8 11.1% NSFNETTEST10-AS AS2136 9 8 11.1% PCC-TECHNO-AS AS1755 9 7 22.2% EBONE AS AS683 8 8 0.0% ARGONNE-AS AS679 8 7 12.5% Technical University Vienna LAN AS45 8 8 0.0% LLL-TIS-AS AS2149 8 7 12.5% PSINET-2 AS1922 8 8 0.0% UAKOM-DAMIS AS1330 8 8 0.0% NSFNETTEST35-AS AS1294 8 7 12.5% PS-NETPLEX-AS AS698 7 6 14.3% ASN-UIUC-REGION-AS AS691 7 6 14.3% PEINET-AS AS2933 7 6 14.3% REALTIME AS2683 7 6 14.3% RADIO-MSU Network AS2578 7 6 14.3% RELCOM-DEMOS AS2108 7 7 0.0% Croatioan Academic and Research Network AS1853 7 4 42.9% ACOnet Backbone AS1842 7 7 0.0% USGS-AS AS17 7 6 14.3% PURDUE-CS AS1322 7 7 0.0% NSFNETTEST27-AS AS3113 6 4 33.3% DOC-ESA-ASN AS239 6 6 0.0% UTORONTO-AS AS1835 6 5 16.7% DENet - Danish Network for Research and AS1800 6 6 0.0% ICM-Atlantic AS1262 6 6 0.0% NSN-NCAR-AS-AS AS1238 6 5 16.7% ICM-MALAYSIA AS1104 6 6 0.0% NIKHEF-H AS73 5 5 0.0% WASHINGTON-AS AS3428 5 5 0.0% ESNET-AS AS292 5 5 0.0% ESNET-CENTRAL-AS AS2871 5 4 20.0% MAZ/CLS AS2822 5 2 60.0% INNET BVBA AS2704 5 4 20.0% HOOKUP-NET-A AS2609 5 4 20.0% ASNBLK-RIPE AS26 5 5 0.0% CORNELL AS2276 5 5 0.0% OCS-AS1 AS2002 5 4 20.0% IBM-PV-AS AS194 5 4 20.0% USAN-AS AS1880 5 5 0.0% Stupi, house man's policy AS1206 5 5 0.0% PSCNET-HS-AS AS1115 5 2 60.0% Austrian Academy of Sciences AS611 4 3 25.0% CANET11-AS AS377 4 4 0.0% SNLA-NET-AS AS3381 4 3 25.0% MHPCC-AS AS3111 4 4 0.0% DIRECT AS3058 4 3 25.0% EMNET AS2927 4 3 25.0% ZONE-NET1 AS2900 4 4 0.0% WN-AZ AS2845 4 4 0.0% SUNET-LUND AS2841 4 4 0.0% SUNET-CTH AS2840 4 4 0.0% SUNET-GBG AS2832 4 4 0.0% SUNET-UMEA AS2605 4 4 0.0% CESNET backbone B - EMPB AS2604 4 1 75.0% HS fuer Musik und darstellende Kunst, Gr AS2555 4 4 0.0% INTER-GRP-B AS2148 4 3 25.0% ITEP-MOSCOW Autonomous system AS2146 4 4 0.0% CRNET AS2131 4 3 25.0% Goedel School Ges.m.b.H. AS1888 4 4 0.0% CWI-Amsterdam AS AS1803 4 1 75.0% ICMNET-5 AS1784 4 4 0.0% SPRINTLINK AS1273 4 4 0.0% ECRC-RBS AS558 3 3 0.0% OLIVETTI-AS1 AS46 3 3 0.0% RUTGERS AS38 3 3 0.0% UIUC AS3365 3 3 0.0% MCSNET AS3358 3 3 0.0% UCIA-AS AS3208 3 3 0.0% ARN Network AS3142 3 3 0.0% DORSAI AS3133 3 2 33.3% DHHS-NET-ASN AS3110 3 2 33.3% HOLONET AS3 3 3 0.0% MIT-GATEWAYS AS2878 3 2 33.3% M-VOLGA AS2873 3 3 0.0% Genesis Project Internet Service AS2856 3 3 0.0% BT-UK-AS AS2834 3 3 0.0% SUNET-UPPSALA AS2828 3 3 0.0% INTERNEX AS2820 3 3 0.0% Zelenograd Networks Community AS2709 3 2 33.3% AOS-AS AS2706 3 3 0.0% HKSUPER AS1808 3 3 0.0% ICMNET-10 AS1776 3 2 33.3% ASN-WU-WIEN AS1747 3 3 0.0% IBMWATSON-AS AS1653 3 3 0.0% SUNET Swedish University Network AS1325 3 3 0.0% NSFNETTEST30-AS AS1234 3 2 33.3% IVOWAN-AS AS8 2 2 0.0% RICE-AS AS690 2 2 0.0% NSFNET-T3-RT-AS AS3447 2 2 0.0% CENTEL-CMDS AS3134 2 2 0.0% USAID-ASN AS2876 2 2 0.0% The Electronic Conferencing Company Limi AS2861 2 2 0.0% SNI-ZFE-AS AS2843 2 2 0.0% SUNET-LINKOPING AS2831 2 2 0.0% SUNET-LULEA AS2643 2 2 0.0% IHEP-SU AS AS2614 2 2 0.0% PUB AS2599 2 2 0.0% SOVAM Teleport AS2561 2 2 0.0% Egyptian Networks AS2546 2 2 0.0% Ariadne Network (NCSR Demokritos) AS2047 2 2 0.0% KFKI-RMKI Autonomous system AS2020 2 2 0.0% HWWILSON-AS AS1999 2 2 0.0% HOUSE-AS-1 AS1972 2 2 0.0% HPC-NET AS1732 2 2 0.0% MIKROK-AS AS1660 2 2 0.0% ANS-BLK1 AS1133 2 1 50.0% DANTE/CERN T1 AS565 1 1 0.0% VTTNET-AS AS545 1 1 0.0% NRI AS543 1 1 0.0% CONVEX AS43 1 1 0.0% BNL-AS AS3492 1 1 0.0% ATLANTA AS3490 1 1 0.0% CDINET AS3462 1 1 0.0% HINET-AS AS3461 1 1 0.0% GONZAGA-ASN AS3425 1 1 0.0% ESNET-AS AS3397 1 1 0.0% EMI-AS AS3394 1 1 0.0% ELPRESS-AS AS3364 1 1 0.0% CSDCO-AS AS3354 1 1 0.0% THENET-AS-1 AS33 1 1 0.0% DEC-WRL-AS AS3152 1 1 0.0% FERMILAB AS3150 1 1 0.0% CLARKNET AS3139 1 1 0.0% ASEE AS3132 1 1 0.0% RCP-AS AS3130 1 1 0.0% RAIN-ASN AS3127 1 1 0.0% CAPRICA-AS AS3114 1 1 0.0% DOJ-CRT-ASN AS288 1 1 0.0% ESA-AS AS2766 1 1 0.0% GLASNET AS2718 1 1 0.0% APSCN-AR AS2714 1 1 0.0% GSA_GOV AS2707 1 1 0.0% WEC AS2649 1 1 0.0% NAS2-AS AS2603 1 1 0.0% NORDUnet 2Mb AS2598 1 1 0.0% CNR-INTL AS2588 1 1 0.0% Institute of Mathematics and CS AS2581 1 1 0.0% GAO AS2538 1 1 0.0% IBM-KINGS-AS AS2532 1 1 0.0% LOC AS2494 1 1 0.0% AKHNET Autonomous System AS2383 1 1 0.0% OTA AS238 1 1 0.0% NSFNETTEST15-AS AS2274 1 1 0.0% CBO AS2140 1 1 0.0% ISSC-AS AS2139 1 1 0.0% DOW1-AS AS2138 1 1 0.0% DOW2-AS AS2135 1 1 0.0% EuroKom Mail Service AS2128 1 1 0.0% DIT AS2112 1 1 0.0% RIPE-ASNBLOCK2 AS2049 1 1 0.0% AVL-GRAZ AS2038 1 1 0.0% IT-HEP Italian Hepnet AS2036 1 1 0.0% JOANNEUM RESEARCH AS2028 1 1 0.0% BNR Europe AS2019 1 1 0.0% MORGAN-AS AS2004 1 1 0.0% TNO-HDO AS2003 1 1 0.0% EPRI-PA AS1997 1 1 0.0% IBMDES-AS AS1975 1 1 0.0% UMI-AS AS1956 1 1 0.0% IBMEVS-AS AS1934 1 1 0.0% ANS-RESTON-AS AS1889 1 1 0.0% Hewlett-Packard Limited, AS1850 1 1 0.0% ISnet Autonomous system AS1804 1 1 0.0% ICMNET-6 AS1757 1 1 0.0% MDCI-AS AS1751 1 1 0.0% LEXMARK-AS AS1739 1 1 0.0% TAMNET AS1679 1 1 0.0% ANS-BLK1 AS1678 1 1 0.0% ANS-BLK1 AS1671 1 1 0.0% ANS-BLK1 AS1342 1 1 0.0% NOKIA-DATA-AS AS1240 1 1 0.0% ICM-Pacific AS1224 1 1 0.0% NCSA-AS AS1134 1 1 0.0% PTT-Res Test AS1128 1 1 0.0% EuropaNET PoP Amsterdam AS1125 1 1 0.0% SURFnet Test ASN AS1123 1 1 0.0% Technikum Vorarlberg AS1117 1 1 0.0% Universitaet fuer Bodenkultur, Wien AS1114 1 1 0.0% Graz University, Austria AS1113 1 1 0.0% Technische Universitaet Graz, AT AS1111 1 1 0.0% University of Klagenfurt, Austria AS1110 1 1 0.0% University of Innsbruck, Austria AS1109 1 1 0.0% AS Universitaet Salzburg Total 20202 13516 33.1%
Daniel, This is great, thanks! If we were to start a "save 100 routing entries" club I find the initial candidates for membership to be at the end of this message. This would not diminish the opportunity for others to join. (the last field is the amount that could be save with best case assumptions) AS AS# Total CIDRd DIFF ALTERNET-AS AS701 1204 532 672 NYSERNET-AS AS174 1134 756 378 The JANET IP service AS786 590 277 313 NETCOM-AS AS2551 571 283 288 DFN-IP AS1275 520 251 269 NSN-AMES-AS AS372 977 717 260 RENATER AS1717 747 518 229 CICNET3-AS AS1225 538 325 213 EUnet/DE AS1270 386 197 189 XLINK-UKA AS517 297 143 154 NEARNET-EXT-AS AS560 569 417 152 BARRNET-AS AS200 525 380 145 CONCERT AS81 252 110 142 OARNET-AS AS600 340 200 140 CSS-DOMAIN AS19 632 493 139 BCNET-AS AS271 212 95 117 PIPEX, AS1849 296 180 116 SURANET-AS-2 AS279 434 320 114 WESTNET-EAST AS209 452 345 107
"Peter S. Ford" <peter@goshawk.lanl.gov> writes: * * Daniel, * * This is great, thanks! If we were to start a "save 100 routing entries" * club I find the initial candidates for membership to be at the end of * this message. This would not diminish the opportunity for others * to join. * * (the last field is the amount that could be save with best case assumptions * ) Actually, I've already modified the script to sort on this field and add this value (called NetGain) to the file. Plus it should look a little prettier (sorry Peter couldn't resist that one ;-)) as you had a TAB problem as I received it. -Tony. ASnum NetsNow NetsCIDR NetGain % Gain Description AS701 1204 532 672 55.8% ALTERNET-AS AS174 1134 756 378 33.3% NYSERNET-AS AS786 590 277 313 53.1% The JANET IP Service AS2551 571 283 288 50.4% NETCOM-AS AS1275 520 251 269 51.7% DFN-IP AS372 977 717 260 26.6% NSN-AMES-AS AS1717 747 518 229 30.7% RENATER AS1225 538 325 213 39.6% CICNET3-AS AS1270 386 197 189 49.0% EUnet/DE AS517 297 143 154 51.9% XLINK-UKA AS560 569 417 152 26.7% NEARNET-EXT-AS AS200 525 380 145 27.6% BARRNET-AS AS81 252 110 142 56.3% CONCERT AS600 340 200 140 41.2% OARNET-AS AS19 632 493 139 22.0% CSS-DOMAIN AS271 212 95 117 55.2% BCNET-AS AS1849 296 180 116 39.2% PIPEX, Public IP EXchange AS279 434 320 114 26.3% SURANET-AS-2 AS209 452 345 107 23.7% WESTNET-EAST AS2150 153 73 80 52.3% CSUNET-SW AS685 253 174 79 31.2% NWNET-AS AS97 288 210 78 27.1% JVNC-AS AS1250 158 81 77 48.7% SINGAPORE-AS AS114 385 309 76 19.7% SESQUINET-AS AS1239 293 218 75 25.6% SprintLink AS137 193 122 71 36.8% GARR AS1213 87 22 65 74.7% HEAnet autonomous system AS2907 166 103 63 38.0% SINET-AS AS1955 108 47 61 56.5% Computer and Automation Institute AS766 129 71 58 45.0% RedIRIS Autonomous System AS1290 167 109 58 34.7% EUNet GB AS93 209 152 57 27.3% MIDNET-AS AS1887 105 49 56 53.3% NASK Polish Research and Academic AS86 366 312 54 14.8% SURANET-AS AS1329 80 31 49 61.3% NSFNETTEST34-AS AS204 246 199 47 19.1% PSCNET-AS AS210 195 149 46 23.6% WESTNET-WEST AS1740 314 270 44 14.0% CERFNET AS376 72 35 37 51.4% RISQ-AS AS813 116 82 34 29.3% CANET-ASN AS555 80 46 34 42.5% MSCNET-AS AS297 160 126 34 21.2% NSN-UMD-AS AS1237 67 33 34 50.7% EUNSOL-AS AS237 143 110 33 23.1% NSFNETTEST14-AS AS2044 72 40 32 44.4% WORLDNET-AS AS2116 71 40 31 43.7% EUnet Norway AS1891 51 21 30 58.8% EUnet Belgium AS AS2109 66 37 29 43.9% DKnet, EUnet Denmark AS1836 106 77 29 27.4% EUnet/CH Autonomous System AS719 83 56 27 32.5% LANLINK autonomous system AS559 92 65 27 29.3% SWITCH, Swiss Academic and Resear AS1257 134 107 27 20.1% SWIPnet Swedish IP Network AS2548 72 46 26 36.1% DIGEX-AS AS378 72 47 25 34.7% ILAN AS1204 62 37 25 40.3% SUNYNET-ASN-AS AS2917 37 14 23 62.2% oleANe, Groupe APYSOFT AS2118 75 52 23 30.7% RIPE-ASNBLOCK2 AS1899 126 103 23 18.3% Fnet, EUnet-France AS2119 56 34 22 39.3% TelePost IP net AS1890 60 38 22 36.7% NLnet Autonomous System AS2493 55 34 21 38.2% FONOROLA-EAST AS1902 75 54 21 28.0% CESNET backbone A - EBONE AS1901 77 57 20 26.0% EUnet Austria AS1267 83 63 20 24.1% I2U Autonomous System AS1251 81 61 20 24.7% ANBR-AS AS1241 47 27 20 42.6% FORTHnet Greek IP Service Provide AS2018 87 68 19 21.8% UNINET-ZA AS591 62 44 18 29.0% NSTN-AS AS549 138 120 18 13.0% ONET-AS AS267 112 94 18 16.1% CICNET2-AS AS2905 46 30 16 34.8% TICSA-ASN AS568 142 127 15 10.6% SUMNET-AS AS2895 31 16 15 48.4% FREEnet AS2380 33 18 15 45.5% ESTNET Autonomous System AS790 48 34 14 29.2% EUnet Finland AS2497 62 49 13 21.0% JNIC-ASN AS2699 60 48 12 20.0% BBN-DSI1 AS2865 24 13 11 45.8% NATVERK-C, UDAC AS1759 37 26 11 29.7% The DataNet IP Service AS1331 36 25 11 30.6% NSFNETTEST36-AS AS1323 56 45 11 19.6% NSFNETTEST28-AS AS542 43 33 10 23.3% ARNET AS2568 27 17 10 37.0% CTSNET AS2386 31 21 10 32.3% INS-AS AS1741 52 42 10 19.2% FUNET autonomous system AS1654 22 12 10 45.5% NORDUnet Iceland, Poland and Balt AS760 49 40 9 18.4% University of Vienna, Austria AS2120 16 7 9 56.2% DAXnet AS1967 27 18 9 33.3% TR-NET AS1327 35 26 9 25.7% NSFNETTEST32-AS AS1112 16 7 9 56.2% Montanuniversitaet Leoben, Austri AS293 67 59 8 11.9% ESNET-WEST-AS AS2529 26 18 8 30.8% Demon Internet Ltd AS195 15 7 8 53.3% SDSC-AS AS577 14 7 7 50.0% CA-NET-AS AS2819 21 14 7 33.3% EUnet Czechia AS AS2611 20 13 7 35.0% AS for BELNET sites connected to AS2110 19 12 7 36.8% IEunet (EUnet/Ireland) backbone A AS2107 24 17 7 29.2% The ARNES IP Service AS1982 47 40 7 14.9% ASN-NWNEXUS AS1930 56 49 7 12.5% RCCN-NET AS1103 48 41 7 14.6% SURFnet IP AS789 30 24 6 20.0% IN2P3 AS2902 21 15 6 28.6% WN-WY AS2702 20 14 6 30.0% INTERSERVE AS22 47 41 6 12.8% NOSC AS1332 45 39 6 13.3% NSFNETTEST37-AS AS3380 11 6 5 45.5% PPPL-AS1 AS286 20 15 5 25.0% EUnet-central AS AS2772 15 10 5 33.3% HKIGS AS2631 9 4 5 55.6% DISCOVERY-AS AS2134 16 11 5 31.2% EUnet-SPAIN AS AS2125 17 12 5 29.4% EUNET-WIN AS2043 16 11 5 31.2% European Multiprotocol Backbone AS1205 14 9 5 35.7% Johannes Kepler University AS714 10 6 4 40.0% APPLE-ENGINEERING-AS AS544 30 26 4 13.3% The DataNet IP Service AS2915 33 29 4 12.1% SPIN-NET AS2765 18 14 4 22.2% CONNECTED AS2637 18 14 4 22.2% GEORGIA-TECH AS1752 18 14 4 22.2% BT main internal data network AS1705 15 11 4 26.7% GM-INDY-NET AS1662 15 11 4 26.7% ANS-BLK1 AS1274 15 11 4 26.7% GMD AS800 15 12 3 20.0% NLNET-AS AS684 22 19 3 13.6% MBNET-AS AS2822 5 2 3 60.0% INNET BVBA AS2607 13 10 3 23.1% Slovak technical university AS2604 4 1 3 75.0% HS fuer Musik und darstellende Ku AS2572 24 21 3 12.5% MORENET AS2277 25 22 3 12.0% ECUANET AS2111 21 18 3 14.3% AS for BELNET sites connected to AS1853 7 4 3 42.9% ACOnet Backbone AS1803 4 1 3 75.0% ICMNET-5 AS175 16 13 3 18.8% AFWL-AS AS164 29 26 3 10.3% DDN-MB-AS AS1333 15 12 3 20.0% NSFNETTEST38-AS AS1326 15 12 3 20.0% NSFNETTEST31-AS AS1312 23 20 3 13.0% VA-TECH-AS AS1115 5 2 3 60.0% Austrian Academy of Sciences AS803 25 23 2 8.0% SASK-NET-AS AS35 15 13 2 13.3% MICATON AS3407 15 13 2 13.3% INTERPATH-NC AS3113 6 4 2 33.3% DOC-ESA-ASN AS2836 22 20 2 9.1% SUNET-STHLM AS278 17 15 2 11.8% RAM-AS AS1755 9 7 2 22.2% EBONE AS AS1729 42 40 2 4.8% TIPnet - Unidata IP services AS1328 31 29 2 6.5% NSFNETTEST33-AS AS1324 26 24 2 7.7% NSFNETTEST29-AS AS1321 12 10 2 16.7% NSFNETTEST26-AS AS698 7 6 1 14.3% ASN-UIUC-REGION-AS AS691 7 6 1 14.3% PEINET-AS AS679 8 7 1 12.5% Technical University Vienna LAN AS611 4 3 1 25.0% CANET11-AS AS513 14 13 1 7.1% CERN/HEPNET AS3463 12 11 1 8.3% ACES-AS AS3381 4 3 1 25.0% MHPCC-AS AS3133 3 2 1 33.3% DHHS-NET-ASN AS3110 3 2 1 33.3% HOLONET AS3058 4 3 1 25.0% EMNET AS2933 7 6 1 14.3% REALTIME AS2927 4 3 1 25.0% ZONE-NET1 AS2878 3 2 1 33.3% M-VOLGA AS2871 5 4 1 20.0% MAZ/CLS AS2715 16 15 1 6.2% REDERIO-AS AS2709 3 2 1 33.3% AOS-AS AS2704 5 4 1 20.0% HOOKUP-NET-A AS2683 7 6 1 14.3% RADIO-MSU Network AS2609 5 4 1 20.0% ASNBLK-RIPE AS2602 11 10 1 9.1% RESTENA AS2578 7 6 1 14.3% RELCOM-DEMOS AS233 9 8 1 11.1% NSFNETTEST10-AS AS2149 8 7 1 12.5% PSINET-2 AS2148 4 3 1 25.0% ITEP-MOSCOW Autonomous system AS2136 9 8 1 11.1% PCC-TECHNO-AS AS2131 4 3 1 25.0% Goedel School Ges.m.b.H. AS2048 29 28 1 3.4% LANET-1 AS2012 14 13 1 7.1% UNINET1 AS2002 5 4 1 20.0% IBM-PV-AS AS194 5 4 1 20.0% USAN-AS AS1835 6 5 1 16.7% DENet - Danish Network for Resear AS1776 3 2 1 33.3% ASN-WU-WIEN AS17 7 6 1 14.3% PURDUE-CS AS1294 8 7 1 12.5% PS-NETPLEX-AS AS1238 6 5 1 16.7% ICM-MALAYSIA AS1234 3 2 1 33.3% IVOWAN-AS AS1133 2 1 1 50.0% DANTE/CERN T1 AS109 13 12 1 7.7% CISCOSYSTEMS AS807 10 10 0 0.0% CANET-ASN AS8 2 2 0 0.0% RICE-AS AS771 20 20 0 0.0% NSN-RICE-AS AS73 5 5 0 0.0% WASHINGTON-AS AS690 2 2 0 0.0% NSFNET-T3-RT-AS AS683 8 8 0 0.0% ARGONNE-AS AS68 12 12 0 0.0% LANL-INET-AS AS565 1 1 0 0.0% VTTNET-AS AS558 3 3 0 0.0% OLIVETTI-AS1 AS545 1 1 0 0.0% NRI AS543 1 1 0 0.0% CONVEX AS46 3 3 0 0.0% RUTGERS AS45 8 8 0 0.0% LLL-TIS-AS AS43 1 1 0 0.0% BNL-AS AS38 3 3 0 0.0% UIUC AS377 4 4 0 0.0% SNLA-NET-AS AS3492 1 1 0 0.0% ATLANTA AS3490 1 1 0 0.0% CDINET AS3462 1 1 0 0.0% HINET-AS AS3461 1 1 0 0.0% GONZAGA-ASN AS3447 2 2 0 0.0% CENTEL-CMDS AS3428 5 5 0 0.0% ESNET-AS AS3425 1 1 0 0.0% ESNET-AS AS3404 19 19 0 0.0% COLORADOCOOP AS3403 10 10 0 0.0% TIAC AS3397 1 1 0 0.0% EMI-AS AS3394 1 1 0 0.0% ELPRESS-AS AS3365 3 3 0 0.0% MCSNET AS3364 1 1 0 0.0% CSDCO-AS AS3358 3 3 0 0.0% UCIA-AS AS3354 1 1 0 0.0% THENET-AS-1 AS33 1 1 0 0.0% DEC-WRL-AS AS3208 3 3 0 0.0% ARN Network AS3152 1 1 0 0.0% FERMILAB AS3150 1 1 0 0.0% CLARKNET AS3142 3 3 0 0.0% DORSAI AS3139 1 1 0 0.0% ASEE AS3134 2 2 0 0.0% USAID-ASN AS3132 1 1 0 0.0% RCP-AS AS3130 1 1 0 0.0% RAIN-ASN AS3127 1 1 0 0.0% CAPRICA-AS AS3114 1 1 0 0.0% DOJ-CRT-ASN AS3111 4 4 0 0.0% DIRECT AS3 3 3 0 0.0% MIT-GATEWAYS AS292 5 5 0 0.0% ESNET-CENTRAL-AS AS2900 4 4 0 0.0% WN-AZ AS288 1 1 0 0.0% ESA-AS AS2876 2 2 0 0.0% The Electronic Conferencing Compa AS2873 3 3 0 0.0% Genesis Project Internet Service AS2861 2 2 0 0.0% SNI-ZFE-AS AS2856 3 3 0 0.0% BT-UK-AS AS2845 4 4 0 0.0% SUNET-LUND AS2843 2 2 0 0.0% SUNET-LINKOPING AS2841 4 4 0 0.0% SUNET-CTH AS2840 4 4 0 0.0% SUNET-GBG AS2834 3 3 0 0.0% SUNET-UPPSALA AS2832 4 4 0 0.0% SUNET-UMEA AS2831 2 2 0 0.0% SUNET-LULEA AS2828 3 3 0 0.0% INTERNEX AS2820 3 3 0 0.0% Zelenograd Networks Community AS2766 1 1 0 0.0% GLASNET AS2718 1 1 0 0.0% APSCN-AR AS2714 1 1 0 0.0% GSA_GOV AS2707 1 1 0 0.0% WEC AS2706 3 3 0 0.0% HKSUPER AS266 11 11 0 0.0% CICNET1-AS AS2649 1 1 0 0.0% NAS2-AS AS2643 2 2 0 0.0% IHEP-SU AS AS2614 2 2 0 0.0% PUB AS2605 4 4 0 0.0% CESNET backbone B - EMPB AS2603 1 1 0 0.0% NORDUnet 2Mb AS26 5 5 0 0.0% CORNELL AS2599 2 2 0 0.0% SOVAM Teleport AS2598 1 1 0 0.0% CNR-INTL AS2588 1 1 0 0.0% Institute of Mathematics and CS AS2581 1 1 0 0.0% GAO AS2561 2 2 0 0.0% Egyptian Networks AS2555 4 4 0 0.0% INTER-GRP-B AS2552 10 10 0 0.0% WUSTL-ASN AS2546 2 2 0 0.0% Ariadne Network (NCSR Demokritos) AS2538 1 1 0 0.0% IBM-KINGS-AS AS2532 1 1 0 0.0% LOC AS2494 1 1 0 0.0% AKHNET Autonomous System AS239 6 6 0 0.0% UTORONTO-AS AS2383 1 1 0 0.0% OTA AS238 1 1 0 0.0% NSFNETTEST15-AS AS2276 5 5 0 0.0% OCS-AS1 AS2274 1 1 0 0.0% CBO AS224 21 21 0 0.0% UNINETT, The Norwegian University AS2146 4 4 0 0.0% CRNET AS2140 1 1 0 0.0% ISSC-AS AS2139 1 1 0 0.0% DOW1-AS AS2138 1 1 0 0.0% DOW2-AS AS2135 1 1 0 0.0% EuroKom Mail Service AS2128 1 1 0 0.0% DIT AS2112 1 1 0 0.0% RIPE-ASNBLOCK2 AS2108 7 7 0 0.0% Croatioan Academic and Research N AS2049 1 1 0 0.0% AVL-GRAZ AS2047 2 2 0 0.0% KFKI-RMKI Autonomous system AS2038 1 1 0 0.0% IT-HEP Italian Hepnet AS2036 1 1 0 0.0% JOANNEUM RESEARCH AS2028 1 1 0 0.0% BNR Europe AS2020 2 2 0 0.0% HWWILSON-AS AS2019 1 1 0 0.0% MORGAN-AS AS2004 1 1 0 0.0% TNO-HDO AS2003 1 1 0 0.0% EPRI-PA AS1999 2 2 0 0.0% HOUSE-AS-1 AS1997 1 1 0 0.0% IBMDES-AS AS1975 1 1 0 0.0% UMI-AS AS1972 2 2 0 0.0% HPC-NET AS1956 1 1 0 0.0% IBMEVS-AS AS1934 1 1 0 0.0% ANS-RESTON-AS AS1922 8 8 0 0.0% UAKOM-DAMIS AS1889 1 1 0 0.0% Hewlett-Packard Limited, AS1888 4 4 0 0.0% CWI-Amsterdam AS AS1880 5 5 0 0.0% Stupi, house man's policy AS1850 1 1 0 0.0% ISnet Autonomous system AS1842 7 7 0 0.0% USGS-AS AS184 18 18 0 0.0% NSFNETTEST4-AS AS1808 3 3 0 0.0% ICMNET-10 AS1804 1 1 0 0.0% ICMNET-6 AS1800 6 6 0 0.0% ICM-Atlantic AS1784 4 4 0 0.0% SPRINTLINK AS1757 1 1 0 0.0% MDCI-AS AS1754 17 17 0 0.0% DESY-HAMBURG AS1751 1 1 0 0.0% LEXMARK-AS AS1747 3 3 0 0.0% IBMWATSON-AS AS1739 1 1 0 0.0% TAMNET AS1732 2 2 0 0.0% MIKROK-AS AS1679 1 1 0 0.0% ANS-BLK1 AS1678 1 1 0 0.0% ANS-BLK1 AS1671 1 1 0 0.0% ANS-BLK1 AS1660 2 2 0 0.0% ANS-BLK1 AS1653 3 3 0 0.0% SUNET Swedish University Network AS1342 1 1 0 0.0% NOKIA-DATA-AS AS1330 8 8 0 0.0% NSFNETTEST35-AS AS1325 3 3 0 0.0% NSFNETTEST30-AS AS1322 7 7 0 0.0% NSFNETTEST27-AS AS1273 4 4 0 0.0% ECRC-RBS AS1262 6 6 0 0.0% NSN-NCAR-AS-AS AS1240 1 1 0 0.0% ICM-Pacific AS1236 10 10 0 0.0% CONTEL-WTPAS-ASN AS1227 11 11 0 0.0% SDSC-TEST1-AS AS1224 1 1 0 0.0% NCSA-AS AS1206 5 5 0 0.0% PSCNET-HS-AS AS1134 1 1 0 0.0% PTT-Res Test AS1128 1 1 0 0.0% EuropaNET PoP Amsterdam AS1125 1 1 0 0.0% SURFnet Test ASN AS1123 1 1 0 0.0% Technikum Vorarlberg AS1117 1 1 0 0.0% Universitaet fuer Bodenkultur, Wi AS1114 1 1 0 0.0% Graz University, Austria AS1113 1 1 0 0.0% Technische Universitaet Graz, AT AS1111 1 1 0 0.0% University of Klagenfurt, Austria AS1110 1 1 0 0.0% University of Innsbruck, Austria AS1109 1 1 0 0.0% AS Universitaet Salzburg AS1104 6 6 0 0.0% NIKHEF-H Total 20202 13516 6686 33.1%
Tony and Marten, Us broken down bureaucrats, ex-unix hacks, simply use awk and sort on command lines and just can't keep up with you shiny new perls of the Internet. peter
Do you have an estimate on the holes?
We are doing this daily on a per AS basis assuming no holes. It can be found in directory ftp.ripe.net:cidr/stats. I think it is up to the ASes to do it. Here is tonights version. The "bottom line" (literally) is interesting. Comments welcome.
ASnum NetsNow NetsCIDR % Gain Description
AS701 1204 532 55.8% ALTERNET-AS AS174 1134 756 33.3% NYSERNET-AS
Sue Hares
Susan Hares <skh@merit.edu> writes: * * Do you have an estimate on the holes? * No - the way I do this estimation is purely on no holes. With holes needs a lot more work. I remeber Curtis had done something a long time ago with estimates with holes. Do you still have that stuff Curtis ? --Tony.
Susan Hares <skh@merit.edu> writes: * * Do you have an estimate on the holes? * No - the way I do this estimation is purely on no holes. With holes needs a lot more work. I remeber Curtis had done something a long time ago with estimates with holes. Do you still have that stuff Curtis ?
--Tony.
That data was collected just after the Boston IETF. What the original data showed was the effects of "forwarding table compression" or combining adjacent routes who's next hop was the same to reduce the number of forwarding entries that needs to be placed on smart forwarding cards, regardless of CIDR savings or lack of CIDR savings. That technique may be of use to us if routing table growth continues (since our main processor can hold tons of RAM but our forwarding cards are our limiting factor). Shortly after that, I modified the program to consider full AS path and do the same mechanical operation with and without including holes. This was thought to be an upper and lower bounds on CIDR benefit in those pre-CIDR allocation days. The code is based on NSFNET modified AIX 3.1 netstat output (remember we used to have things called region routes which were like ISIS areas). The original code is still lying around, but it isn't of much use. It would need to be rewritten to use a gated dump or other input source and I don't think the excersize is particularly useful. What might be useful is running the forwarding table compression to see what gains we could get for things like NSS that are constrained by the forwarding card design but can take huge main memories. It might also be useful to run the "no holes" estimate based on full AS path since that would give us the _actual_ benefit of automated aggregation if we were to get rid of the longest match preference. I don't have the time to do these at the moment. I'm collecting the routing tables for the first on the hopes I'll find some time and anyone can do a gated dump or "sh ip bgp" and do the second to determine their own expected benefit. Curtis
"Peter S. Ford" <peter@goshawk.lanl.gov> writes:
Could the RIPE and Merit folks please analyze the current routing tables looking for the largest blocks of addresses that could be aggregated and determine who they belong to?
This way we can look for maximum leverage.
Oops. Forgot to include the full explanation of the table in my last message. Before people ask, here it is: This shows a daily analysis of the networks (classful) routed in the Internet per AS and the amount of networks after aggregation at the AS level. The aggregation assumed is without any holes whatsoever. Of course not every AS can aggregate at the AS level so for some ASes the "NetsCIDR" figure may be difficult to reach. It should also be noted that an AS where figures for NetsNow and NetsCIDR are the same may well mean the AS has already done as much aggregation as is possible (AS224 is a good example of this).
participants (9)
-
bmanning＠is.rice.edu -
Curtis Villamizar -
Daniel Karrenberg -
epg＠merit.edu -
Peter Lothberg -
Peter S. Ford -
Susan Hares -
Tony Bates -
Tony Li