October 2002 - routing-wg - mailman.ripe.net

Weekly Routing Table Report
by Routing Table Analysis 04 Oct '02

04 Oct '02

This is an automated weekly mailing describing the state of the Internet Routing Table as seen from APNIC's router in Japan. Daily listings are sent to bgp-stats(a)lists.apnic.net For a graphical representation, please see http://www.apnic.net/stats/bgp. If you have any comments please contact Philip Smith <pfs(a)cisco.com>. Routing Table Report 20:00 +10GMT Fri 04 Oct, 2002 Analysis Summary ---------------- BGP routing table entries examined: 115352 Prefixes after maximum aggregation: 74354 Unique aggregates announced to Internet: 55194 Total ASes present in the Internet Routing Table: 13853 Origin-only ASes present in the Internet Routing Table: 11981 Origin ASes announcing only one prefix: 5379 Transit ASes present in the Internet Routing Table: 1872 Transit-only ASes present in the Internet Routing Table: 61 Average AS path length visible in the Internet Routing Table: 5.3 Max AS path length visible: 18 Illegal AS announcements present in the Routing Table: 1 Non-routable prefixes present in the Routing Table: 0 Prefixes being announced from the IANA Reserved Address blocks: 35 Number of addresses announced to Internet: 1190818664 Equivalent to 70 /8s, 250 /16s and 115 /24s Percentage of available address space announced: 32.1 Percentage of allocated address space announced: 58.9 Percentage of available address space allocated: 54.6 Total number of prefixes smaller than registry allocations: 47772 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 18762 Total APNIC prefixes after maximum aggregation: 11392 Prefixes being announced from the APNIC address blocks: 17280 Unique aggregates announced from the APNIC address blocks: 10967 APNIC Region origin ASes present in the Internet Routing Table: 1620 APNIC Region origin ASes announcing only one prefix: 528 APNIC Region transit ASes present in the Internet Routing Table: 282 Average APNIC Region AS path length visible: 5.2 Max APNIC Region AS path length visible: 12 Number of APNIC addresses announced to Internet: 97984928 Equivalent to 5 /8s, 215 /16s and 33 /24s Percentage of available APNIC address space announced: 64.4 APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239 17408 - 18431, 23552 - 24575 APNIC Address Blocks 61/8, 202/7, 210/7, 218/7 and 220/7 ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 72181 Total ARIN prefixes after maximum aggregation: 46019 Prefixes being announced from the ARIN address blocks: 50446 Unique aggregates announced from the ARIN address blocks: 15294 ARIN Region origin ASes present in the Internet Routing Table: 7784 ARIN Region origin ASes announcing only one prefix: 2567 ARIN Region transit ASes present in the Internet Routing Table: 752 Average ARIN Region AS path length visible: 5.2 Max ARIN Region AS path length visible: 18 Number of ARIN addresses announced to Internet: 181344320 Equivalent to 10 /8s, 207 /16s and 24 /24s Percentage of available ARIN address space announced: 67.6 ARIN AS Blocks 1 - 1876, 1902 - 2042, 2044 - 2046, 2048 - 2106 2138 - 2584, 2615 - 2772, 2823 - 2829, 2880 - 3153 3354 - 4607, 4865 - 5119, 5632 - 6655, 6912 - 7466 7723 - 8191, 10240 - 12287, 13312 - 15359 16384 - 17407, 18432 - 20479, 21504 - 23551 25600 - 26591, 26624 - 27647 ARIN Address Blocks 24/8, 63/8, 64/6, 68/7, 199/8, 204/6, 208/7 and 216/8 RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 19582 Total RIPE prefixes after maximum aggregation: 14861 Prefixes being announced from the RIPE address blocks: 16255 Unique aggregates announced from the RIPE address blocks: 10812 RIPE Region origin ASes present in the Internet Routing Table: 4072 RIPE Region origin ASes announcing only one prefix: 2203 RIPE Region transit ASes present in the Internet Routing Table: 759 Average RIPE Region AS path length visible: 5.8 Max RIPE Region AS path length visible: 14 Number of RIPE addresses announced to Internet: 114297472 Equivalent to 6 /8s, 208 /16s and 10 /24s Percentage of available RIPE address space announced: 75.7 RIPE AS Blocks 1877 - 1901, 2043, 2047, 2107 - 2136, 2585 - 2614 2773 - 2822, 2830 - 2879, 3154 - 3353, 5377 - 5631 6656 - 6911, 8192 - 9215, 12288 - 13311, 15360 - 16383 20480 - 21503, 24576 - 25599 RIPE Address Blocks 62/8, 80/7, 193/8, 194/7, 212/7 and 217/8 LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 4827 Total LACNIC prefixes after maximum aggregation: 2082 Prefixes being announced from the LACNIC address blocks: 4210 Unique aggregates announced from the LACNIC address blocks: 2624 LACNIC Region origin ASes present in the Internet Routing Table: 316 LACNIC Region origin ASes announcing only one prefix: 81 LACNIC Region transit ASes present in the Internet Routing Table: 68 Average LACNIC Region AS path length visible: 6.0 Max LACNIC Region AS path length visible: 17 Number of LACNIC addresses announced to Internet: 11373568 Equivalent to 0 /8s, 173 /16s and 140 /24s Percentage of available LACNIC address space announced: 67.8 LACNIC AS Blocks 26592 - 26623 LACNIC Address Blocks 200/8 APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1221 1198 1187 881 Telstra Pty Ltd 703 398 375 314 UUNET 2907 361 1831 341 SINET Japan 2764 342 356 314 connect.com.au pty ltd 7474 303 275 206 Optus Communications Pty Ltd 4134 292 2268 96 Data Communications Bureau 17557 289 21 111 Pakistan Telecom 4755 254 139 73 Videsh Sanchar Nigam Ltd. Aut 4766 249 1808 157 Korea Internet Exchange for " 4814 224 80 16 China Telecom (Group) 17676 224 3506 33 XTAGE CORPORATION 9443 186 57 71 Primus Telecommunications 9583 165 32 5 Satyam Infoway Ltd., 4515 137 102 78 Star Internet Services Ltd. 9768 134 385 73 Korea Telecom 7657 128 22 85 The Internet Group Limited 9800 122 188 24 CHINA UNICOM 4739 117 56 108 Commerical Internet eXchange 4713 115 1049 104 NTT Communications Corporatio 9498 109 8 21 BHARTI BT INTERNET LTD. ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 701 1784 9231 1282 UUNET Technologies, Inc. 7018 1337 7195 937 AT&T 3908 1049 1652 509 Supernet, Inc. 1239 847 3170 649 Sprint 852 756 1145 457 Telus Advanced Communications 7843 717 371 298 Adelphia Corp. 1 662 8089 439 GENUITY 7132 595 672 71 Southwestern Bell Internet Se 7046 579 878 300 UUNET Technologies, Inc. 209 526 2066 341 Qwest 4323 525 435 165 Time Warner Communications, I 690 518 75 325 Merit Network 7066 490 204 257 Virginia Polytechnic Institut 2548 447 1134 277 Business Internet, Inc. 705 409 130 199 UUNET Technologies, Inc. 3549 409 725 295 Global Crossing 6197 390 601 40 BellSouth Network Solutions, 4355 382 292 104 EarthLink, Inc. 2914 368 2027 361 Verio, Inc. 15290 358 230 175 AT&T Canada IES RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 702 874 2407 728 UUNET - Commercial IP service 3301 387 907 339 TeliaNet Sweden 3215 294 677 170 France Telecom Transpac 3320 248 1966 225 Deutsche Telekom AG 680 238 2151 234 DFN-IP service G-WiN 5515 214 783 177 Sonera Solution Autonomous Sy 5400 210 84 98 BT Ignite European Backbone 1257 205 444 201 SWIPnet Swedish IP Network 719 191 306 130 LANLINK autonomous system 786 176 1873 176 The JANET IP Service 8708 151 41 145 Romania Data Systems S.A. 3303 144 532 143 Swisscom Ltd 2856 135 788 125 BTnet UK Regional network 3246 123 373 116 Song Networks 12302 122 17 29 MobiFon S.A. 5511 111 192 89 France Telecom 8220 110 168 102 COLT Internet - International 3233 107 10 8 RNC - Romanian Natioanal R&D 3269 106 690 64 TELECOM ITALIA 2874 103 85 39 Global One Services AB LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 201 299 113 UniNet S.A. de C.V. 7303 172 27 49 Telecom Argentina Stet-France 11172 170 88 35 Servicios Alestra S.A de C.V 6503 151 206 106 AVANTEL, S.A. 10834 147 75 35 ADVANCE TELECOMUNICACIONES S. 6140 115 76 28 ImpSat USA, Inc. 16814 107 7 13 NSS, S.A. 13999 103 19 8 Mega Cable S.A. de C.V. 10620 93 6 29 TVCABLE BOGOTA 11340 79 2 24 Red Universitaria Nacional 1916 73 409 40 Fundacao de Amparo a Pesquisa 15311 73 24 31 Telefonica Empresas 15034 72 5 32 TIBA SA 11992 70 7 30 Integrated Systems 4270 68 18 10 Red de Interconexion Universi 7984 64 27 42 Global One Colombia 2277 63 16 3 ECUANET - CORPORACION ECUATOR 4926 63 4 51 Telintar S.A. 8065 60 6 16 Empresas Publicas de Medellin 16528 57 5 35 ImpSat S.A. Global Per AS Maximum Aggr summary ---------------------------------- ASN No of nets Net Savings Description 3908 1049 540 Supernet, Inc. 7132 595 524 Southwestern Bell Internet Se 7843 717 419 Adelphia Corp. 7018 1337 400 AT&T 4323 525 360 Time Warner Communications, I 6197 390 350 BellSouth Network Solutions, 1221 1198 317 Telstra Pty Ltd 1580 319 307 ANOSCEUR 852 756 299 Telus Advanced Communications 18566 291 287 Covad Communications 7046 579 279 UUNET Technologies, Inc. 4355 382 278 EarthLink, Inc. 6347 341 267 SAVVIS Communications Corpora 4151 280 265 USDA 7066 490 233 Virginia Polytechnic Institut 376 337 229 Reseau Interordinateurs Scien 1 662 223 GENUITY 705 409 210 UUNET Technologies, Inc. 11492 222 209 Cable One 4814 224 208 China Telecom (Group) List of Unregistered ASNs (Global) ---------------------------------- Bad AS Designation Network Transit AS Description 5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies, Advertised Unregistered Addresses --------------------------------- Network Origin AS Description 39.0.0.0/8 4554 Exchange Point Blocks 132.0.0.0/10 568 DISO-UNRRA 134.137.0.0/16 7170 AT&T Government Markets 135.0.0.0/13 10455 Lucent Technologies 137.0.0.0/13 568 DISO-UNRRA 138.94.0.0/16 1 GENUITY 158.0.0.0/13 568 DISO-UNRRA 164.233.0.0/16 6020 DISA NETWORK SERVICES 164.236.0.0/16 568 DISO-UNRRA 192.31.242.0/24 771 NASA Ames Research Center 192.44.0.0/19 702 UUNET - Commercial IP service 192.72.0.0/18 4780 Digital United Inc. 192.72.0.0/16 4780 Digital United Inc. 192.83.16.0/20 5515 Sonera Solution Autonomous Sy 192.83.32.0/19 5515 Sonera Solution Autonomous Sy 192.83.96.0/22 5515 Sonera Solution Autonomous Sy 192.83.100.0/24 5515 Sonera Solution Autonomous Sy 192.91.198.0/24 2568 CTS Network Services 192.119.135.0/24 270 NASA 192.135.50.0/24 7018 AT&T 192.136.79.0/24 719 LANLINK autonomous system 192.136.86.0/24 719 LANLINK autonomous system 192.136.87.0/24 719 LANLINK autonomous system 192.136.88.0/24 719 LANLINK autonomous system 192.136.136.0/24 7046 UUNET Technologies, Inc. 192.136.136.0/22 568 DISO-UNRRA 192.139.62.0/24 6539 GT Group Telecom Services Cor 192.140.0.0/16 5511 France Telecom 192.153.136.0/21 568 DISO-UNRRA 192.156.0.0/19 568 DISO-UNRRA 192.156.164.0/24 19548 Adelphia Business Solutions 192.172.0.0/19 568 DISO-UNRRA 192.208.29.0/24 3908 Supernet, Inc. 192.208.30.0/23 3908 Supernet, Inc. 192.243.36.0/23 2044 AUSNet, Inc. Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:18 /9:6 /10:7 /11:12 /12:37 /13:90 /14:238 /15:428 /16:7274 /17:1501 /18:2708 /19:7863 /20:7508 /21:5292 /22:8106 /23:9863 /24:63607 /25:171 /26:208 /27:116 /28:84 /29:52 /30:107 /31:0 /32:56 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 3908 619 1049 Supernet, Inc. 702 538 874 UUNET - Commercial IP service 7843 528 717 Adelphia Corp. 701 485 1784 UUNET Technologies, Inc. 690 465 518 Merit Network 7018 420 1337 AT&T 7066 388 490 Virginia Polytechnic Institut 1580 306 319 ANOSCEUR 18566 285 291 Covad Communications 6197 274 390 BellSouth Network Solutions, 7046 265 579 UUNET Technologies, Inc. 6198 243 313 BellSouth Network Solutions, 1239 240 847 Sprint 3301 231 387 TeliaNet Sweden 3215 225 294 France Telecom Transpac 4355 220 382 EarthLink, Inc. 11492 217 222 Cable One 209 203 526 Qwest 3320 189 248 Deutsche Telekom AG 5400 188 210 BT Ignite European Backbone Number of /24s announced per /8 block (Global) ---------------------------------------------- 4:4 12:550 13:10 15:4 17:7 20:4 24:841 25:1 32:41 38:24 40:7 44:1 55:1 57:14 61:358 62:235 63:1851 64:1283 65:1523 66:1203 67:110 68:124 80:300 81:56 128:118 129:125 130:19 131:54 132:9 133:2 134:129 135:9 136:589 137:104 138:153 139:70 140:166 141:66 142:71 143:49 144:152 145:17 146:240 147:225 148:248 149:78 150:42 151:73 152:297 153:37 154:9 155:105 156:102 157:107 158:69 159:139 160:23 161:73 162:123 163:88 164:262 165:127 166:106 167:273 168:301 169:61 170:180 171:3 192:5378 193:2385 194:2020 195:810 196:435 198:3599 199:3058 200:2613 202:3416 203:4798 204:3253 205:2105 206:2334 207:2480 208:2552 209:2580 210:588 211:246 212:880 213:729 214:7 215:19 216:2926 217:502 218:47 219:2 End of report

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New Document available: RIPE-259
by RIPE NCC Document Announcement Service 02 Oct '02

02 Oct '02

New/Revised RIPE Document Announcement -------------------------------------- A revised/new document is available from the RIPE document store. Ref: ripe-259 Title: Smallest RIPE NCC Allocation / Assignment Sizes Author: Joao Luis Silva Damas, Leo Vegoda Date: 2 October 2002 Format: PS=10860 TXT=2132 Obsoletes: ripe-222, ripe-242 Obsoleted by: Updates: Updated by: Short content description ------------------------- The "Smallest RIPE NCC Allocation / Assignment Sizes" document contains the size of the minimum and default allocations made by the RIPE NCC to Local Internet Registries (LIRs) and End Users from IPv4 and IPv6 CIDR blocks allocated to the RIPE NCC by the Internet Assigned Numbers Authority (IANA). Accessing the RIPE document store --------------------------------- You can access the RIPE documents in HTML format via WWW. RIPE-259 is available at the following URL: http://www.ripe.net/ripe/docs/smallest-alloc-sizes.html The RIPE document store is also available via anonymous FTP to ftp.ripe.net, in the directory ripe/docs. The URLs for the new documents on the FTP-server are: ftp://ftp.ripe.net/ripe/docs/ripe-259.ps PostScript version ftp://ftp.ripe.net/ripe/docs/ripe-259.txt plain text version

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Re: Route Flap Damping: Harmful ?
by Christian Panigl, ACOnet/VIX/UniVie 01 Oct '02

01 Oct '02

>Date: Wed, 18 Sep 2002 09:09:51 -0400 >From: Zhuoqing Morley Mao <zmao(a)research.att.com> > >Could you elaborate on the phenonmeon you observed? In particular, how >were you able to determine it was caused by the BGP convergence effects? Hi Morley, we (ACOnet/AS1853) do have our primary transit through Sprint/AS1239 and a (lowerpref) backup through Geant/AS20965_3549. We are receiving a full table from both (on two different routers). The path through Sprint for most of the US Internet is shorter than through Geant. When comparing the flap statistics on the two routers many of the listed prefixes are the same with about the same "duration", but the number of flaps seen through the longer path is much bigger (factor of 2-3 !) As I wrote in a previous mail, feel free to use our looking-glass http://www.aco.net/lookingglass/lg.html [flap statistics] to see the enormous amount of flaps counted by our Geant connected router. Unfortunately our Sprint connected router is not accessible through the looking-glass. But if you like I could produce snapshots and send them to you. >We hope that someone in Europe could also help out with the experiment, >details of which are described at http://www.psg.com/~zmao I think there was the idea to eventually enable RIS boxes as BGP beacons ? We do have a RIPE RIS box in Vienna at the VIX (RRC05). >We currently have two beacons in the U.S., some topology diversity would >really help. If RIS doesn't help we are considering setting up an ACOnet beacon for you, however this might not happen before begin of October. >Thanks! You are welcome ! Kind regards CP --- ---------------------------------------------------------------------- --- --- Christian Panigl : Vienna University Computer Center - ACOnet --- --- VUCC - ACOnet - VIX : -------------------------------------------- --- --- Universitaetsstrasse 7 : Mail: Panigl(a)CC.UniVie.ac.at (CP8-RIPE) --- --- A-1010 Vienna / Austria : Tel: +43 1 4277-14032 (Fax: -9140) --- --- ---------------------------------------------------------------------- ---

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