- routing-wg - mailman.ripe.net

The Cidr Report
by cidr-report＠potaroo.net 21 Mar '03

21 Mar '03

This report has been generated at Fri Mar 21 21:46:30 2003 AEST. The report analyses the BGP Routing Table of an AS4637 (Reach) router and generates a report on aggregation potential within the table. Check http://www.cidr-report.org/as4637 for a current version of this report. Recent Table History Date Prefixes CIDR Agg 14-03-03 120659 86373 15-03-03 120724 85975 16-03-03 120525 85886 17-03-03 120567 85987 18-03-03 120637 86171 19-03-03 120704 86222 20-03-03 120817 86331 21-03-03 120815 86377 AS Summary 14780 Number of ASes in routing system 5842 Number of ASes announcing only one prefix 1555 Largest number of prefixes announced by an AS AS701 : ALTERNET-AS UUNET Technologies, Inc. 73048064 Largest address span announced by an AS (/32s) AS568 : SUMNET-AS DISO-UNRRA Aggregation Summary The algorithm used in this report proposes aggregation only when there is a precise match using the AS path, so as to preserve traffic transit policies. Aggregation is also proposed across non-advertised address space ('holes'). --- 21Mar03 --- ASnum NetsNow NetsAggr NetGain % Gain Description Table 120844 86356 34488 28.5% All ASes AS3908 1097 536 561 51.1% SUPERNETASBLK SuperNet, Inc. AS18566 505 13 492 97.4% COVAD Covad Communications AS4151 545 108 437 80.2% USDA-1 USDA AS701 1555 1126 429 27.6% ALTERNET-AS UUNET Technologies, Inc. AS7843 614 214 400 65.1% ADELPHIA-AS Adelphia Corp. AS4323 555 173 382 68.8% TW-COMM Time Warner Communications, Inc. AS7018 1353 982 371 27.4% ATT-INTERNET4 AT&T WorldNet Services AS1221 1104 808 296 26.8% ASN-TELSTRA Telstra Pty Ltd AS22927 295 14 281 95.3% AR-TEAR2-LACNIC TELEFONICA DE ARGENTINA AS1239 972 692 280 28.8% SPRINTLINK Sprint AS1 705 430 275 39.0% GNTY-1 Genuity AS6197 475 202 273 57.5% BATI-ATL BellSouth Network Solutions, Inc AS4355 385 119 266 69.1% ERMS-EARTHLNK EARTHLINK, INC AS6198 448 183 265 59.2% BATI-MIA BellSouth Network Solutions, Inc AS705 457 203 254 55.6% ASN-ALTERNET UUNET Technologies, Inc. AS4814 264 15 249 94.3% CHINANET-BEIJING-AP China Telecom (Group) AS2386 496 275 221 44.6% INS-AS AT&T Data Communications Services AS27364 278 69 209 75.2% ACS-INTERNET Armstrong Cable Services AS17676 233 29 204 87.6% GIGAINFRA XTAGE CORPORATION AS22291 243 48 195 80.2% CHARTER-LA Charter Communications AS4134 310 119 191 61.6% CHINANET-BACKBONE No.31,Jin-rong Street AS209 531 341 190 35.8% ASN-QWEST Qwest AS690 504 314 190 37.7% MERIT-AS-27 Merit Network Inc. AS6347 370 194 176 47.6% DIAMOND SAVVIS Communications Corporation AS3561 517 342 175 33.8% CWUSA Cable & Wireless USA AS2048 259 87 172 66.4% LANET-1 State of Louisiana AS17557 374 211 163 43.6% PKTELECOM-AS-AP Pakistan Telecom AS22773 191 32 159 83.2% CCINET-2 Cox Communications Inc. Atlanta AS7303 242 89 153 63.2% AR-TAST-LACNIC Telecom Argentina Stet-France Telecom S.A. AS8372 182 30 152 83.5% COLT-UK-AS COLT Internet UK Access Network. Total 16059 7998 8061 50.2% Top 30 total Please see http://www.cidr-report.org for the full report ------------------------------------ Copies of this report are mailed to: nanog(a)merit.edu eof-list(a)ripe.net apops(a)apops.net routing-wg(a)ripe.net afnog(a)afnog.org

1 0

Weekly Routing Table Report
by Routing Table Analysis 21 Mar '03

21 Mar '03

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 21 Mar, 2003 Analysis Summary ---------------- BGP routing table entries examined: 123374 Prefixes after maximum aggregation: 78112 Unique aggregates announced to Internet: 59112 Total ASes present in the Internet Routing Table: 14843 Origin-only ASes present in the Internet Routing Table: 12879 Origin ASes announcing only one prefix: 5830 Transit ASes present in the Internet Routing Table: 1964 Transit-only ASes present in the Internet Routing Table: 66 Average AS path length visible in the Internet Routing Table: 5.4 Max AS path length visible: 20 Illegal AS announcements present in the Routing Table: 12 Non-routable prefixes present in the Routing Table: 0 Prefixes being announced from the IANA Reserved Address blocks: 20 Number of addresses announced to Internet: 1218233637 Equivalent to 72 /8s, 156 /16s and 197 /24s Percentage of available address space announced: 32.9 Percentage of allocated address space announced: 59.2 Percentage of available address space allocated: 55.5 Total number of prefixes smaller than registry allocations: 57969 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 20750 Total APNIC prefixes after maximum aggregation: 12171 Prefixes being announced from the APNIC address blocks: 19238 Unique aggregates announced from the APNIC address blocks: 11778 APNIC Region origin ASes present in the Internet Routing Table: 1747 APNIC Region origin ASes announcing only one prefix: 512 APNIC Region transit ASes present in the Internet Routing Table: 293 Average APNIC Region AS path length visible: 5.4 Max APNIC Region AS path length visible: 16 Number of APNIC addresses announced to Internet: 107707840 Equivalent to 6 /8s, 107 /16s and 125 /24s Percentage of available APNIC address space announced: 57.1 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 220/6 ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 75703 Total ARIN prefixes after maximum aggregation: 48106 Prefixes being announced from the ARIN address blocks: 53851 Unique aggregates announced from the ARIN address blocks: 16843 ARIN Region origin ASes present in the Internet Routing Table: 8244 ARIN Region origin ASes announcing only one prefix: 2799 ARIN Region transit ASes present in the Internet Routing Table: 791 Average ARIN Region AS path length visible: 5.3 Max ARIN Region AS path length visible: 17 Number of ARIN addresses announced to Internet: 187886400 Equivalent to 11 /8s, 50 /16s and 235 /24s Percentage of available ARIN address space announced: 70.0 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: 21678 Total RIPE prefixes after maximum aggregation: 15636 Prefixes being announced from the RIPE address blocks: 18209 Unique aggregates announced from the RIPE address blocks: 11881 RIPE Region origin ASes present in the Internet Routing Table: 4459 RIPE Region origin ASes announcing only one prefix: 2433 RIPE Region transit ASes present in the Internet Routing Table: 802 Average RIPE Region AS path length visible: 5.9 Max RIPE Region AS path length visible: 20 Number of RIPE addresses announced to Internet: 128177920 Equivalent to 7 /8s, 163 /16s and 215 /24s Percentage of available RIPE address space announced: 76.4 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, 28672 - 29695 RIPE Address Blocks 62/8, 80/7, 82/8, 188/8, 193/8, 194/7, 212/7 and 217/8 LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 5232 Total LACNIC prefixes after maximum aggregation: 2199 Prefixes being announced from the LACNIC address blocks: 4624 Unique aggregates announced from the LACNIC address blocks: 2919 LACNIC Region origin ASes present in the Internet Routing Table: 329 LACNIC Region origin ASes announcing only one prefix: 86 LACNIC Region transit ASes present in the Internet Routing Table: 69 Average LACNIC Region AS path length visible: 5.8 Max LACNIC Region AS path length visible: 15 Number of LACNIC addresses announced to Internet: 12382976 Equivalent to 0 /8s, 188 /16s and 243 /24s Percentage of available LACNIC address space announced: 73.8 LACNIC AS Blocks 26592 - 26623, 27648 - 28671 LACNIC Address Blocks 200/8 APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1221 1101 1106 805 Telstra Pty Ltd 703 406 370 314 UUNET 2907 391 1976 368 SINET Japan 17557 376 27 139 Pakistan Telecom 2764 323 340 290 connect.com.au pty ltd 4134 310 2668 102 Data Communications Bureau 7474 306 276 208 Optus Communications Pty Ltd 4814 264 79 15 China Telecom (Group) 3786 250 772 212 DACOM Corporation 17676 235 3614 26 XTAGE CORPORATION 4755 231 135 75 Videsh Sanchar Nigam Ltd. Aut 9583 215 33 14 Satyam Infoway Ltd., 4766 206 2074 155 Korea Internet Exchange for " 9443 178 57 77 Primus Telecommunications 9800 167 205 42 CHINA UNICOM 4765 152 10 14 World Net & Services Co., Ltd 9238 134 8 17 TATA ISP 4716 128 717 122 TTnet 4739 127 57 116 Commerical Internet eXchange 9768 125 384 64 Korea Telecom ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 701 1578 8828 1129 UUNET Technologies, Inc. 7018 1357 7143 941 AT&T 3908 1247 1588 479 Supernet, Inc. 1239 987 3153 701 Sprint 1 710 8071 427 GENUITY 7843 617 400 188 Adelphia Corp. 3561 590 2351 343 Cable & Wireless USA 4323 556 490 172 Time Warner Communications, I 852 553 1107 435 Telus Advanced Communications 4151 544 691 60 USDA 18566 539 121 12 Covad Communications 209 535 2091 340 Qwest 690 504 74 314 Merit Network 2386 496 481 244 AT&T Data Communications Serv 7066 490 204 254 Virginia Polytechnic Institut 6197 475 338 196 BellSouth Network Solutions, 705 457 186 203 UUNET Technologies, Inc. 6198 446 208 179 BellSouth Network Solutions, 20115 408 168 265 Charter Communications 3549 407 695 310 Global Crossing RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 702 783 2236 648 UUNET - Commercial IP service 8372 409 67 30 COLT Internet UK Access Netwo 3301 313 1175 303 TeliaNet Sweden 3215 310 835 174 France Telecom Transpac 3320 267 1996 230 Deutsche Telekom AG 680 232 2054 229 DFN-IP service G-WiN 1257 217 344 191 SWIPnet Swedish IP Network 5400 217 77 103 BT Ignite European Backbone 719 202 307 125 LANLINK autonomous system 5515 186 779 160 Sonera Solution Autonomous Sy 786 179 1874 179 The JANET IP Service 8708 153 42 150 Romania Data Systems S.A. 20858 151 17 3 This AS will be used to conne 3303 145 517 144 Swisscom Ltd 8220 133 211 124 COLT Internet - International 12302 123 18 30 MobiFon S.A. 2856 118 1298 108 BTnet UK Regional network 3269 112 753 62 TELECOM ITALIA 3233 106 10 19 RNC - Romanian Natioanal R&D 3246 105 360 102 Song Networks LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 6140 291 98 106 ImpSat 7303 242 36 56 Telecom Argentina Stet-France 8151 217 349 116 UniNet S.A. de C.V. 11172 165 66 33 Servicios Alestra S.A de C.V 6503 145 190 104 AVANTEL, S.A. 16814 139 9 18 NSS, S.A. 11340 110 3 38 Red Universitaria Nacional 10620 107 7 31 TVCABLE BOGOTA 1916 75 306 45 Fundacao de Amparo a Pesquisa 11992 75 8 35 Integrated Systems 8065 73 6 18 Empresas Publicas de Medellin 6147 72 62 19 Telefonica Del Peru 6535 71 4 22 Chilesat Servicios Empresari 15311 71 27 36 Telefonica Empresas 4270 69 18 10 Red de Interconexion Universi 7080 64 4 1 Electronica y Comunicaciones 7927 64 5 39 Global One Venezuela 13999 64 36 8 Mega Cable S.A. de C.V. 7984 61 11 40 Global One Colombia 7738 59 170 11 Telecomunicacoes da Bahia S.A Global Per AS Maximum Aggr summary ---------------------------------- ASN No of nets Net Savings Description 3908 1247 768 Supernet, Inc. 18566 539 527 Covad Communications 4151 544 484 USDA 7843 617 429 Adelphia Corp. 7018 1357 416 AT&T 4323 556 384 Time Warner Communications, I 8372 409 379 COLT Internet UK Access Netwo 1221 1101 296 Telstra Pty Ltd 6347 371 291 SAVVIS Communications Corpora 1239 987 286 Sprint 1 710 283 GENUITY 22927 295 281 TELEFONICA DE ARGENTINA 6197 475 279 BellSouth Network Solutions, 4355 387 273 EarthLink, Inc. 6198 446 267 BellSouth Network Solutions, 27364 278 260 Armstrong Cable Services 705 457 254 UUNET Technologies, Inc. 2386 496 252 AT&T Data Communications Serv 4814 264 249 China Telecom (Group) 3561 590 247 Cable & Wireless USA List of Unregistered ASNs (Global) ---------------------------------- Bad AS Designation Network Transit AS Description 1877 UNALLOCATED 192.108.199.0/24 1880 Stupi, house man's p 64521 PRIVATE 198.189.23.0/24 2151 California State Uni 64521 PRIVATE 198.189.24.0/24 2151 California State Uni 64524 PRIVATE 198.189.134.0/24 2151 California State Uni 64524 PRIVATE 198.189.135.0/24 2151 California State Uni 64524 PRIVATE 198.189.136.0/24 2151 California State Uni 64524 PRIVATE 198.189.137.0/24 2151 California State Uni 64524 PRIVATE 198.189.138.0/24 2151 California State Uni 64521 PRIVATE 198.189.158.0/24 2151 California State Uni 64521 PRIVATE 198.189.235.0/24 2151 California State Uni 64521 PRIVATE 198.189.236.0/24 2151 California State Uni 65501 PRIVATE 200.73.26.0/24 18747 IFX Communication Ve Advertised Unregistered Addresses --------------------------------- Network Origin AS Description 39.0.0.0/8 4554 Exchange Point Blocks 132.0.0.0/10 568 DISO-UNRRA 135.0.0.0/13 10455 Lucent Technologies 137.0.0.0/13 568 DISO-UNRRA 158.0.0.0/13 568 DISO-UNRRA 160.225.160.0/19 5676 Pacific Bell Internet Service 192.44.0.0/19 702 UUNET - Commercial IP service 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 192.119.135.0/24 270 NASA 192.135.50.0/24 7018 AT&T 192.136.79.0/24 719 LANLINK autonomous system 192.136.135.0/24 1239 Sprint 192.153.136.0/21 568 DISO-UNRRA 192.156.164.0/24 19548 Adelphia Business Solutions 192.158.249.0/24 27319 INTERNET SOFTWARE CONSORTIUM, 192.172.0.0/19 568 DISO-UNRRA 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 /9:3 /10:8 /11:13 /12:46 /13:89 /14:241 /15:450 /16:7352 /17:1631 /18:2918 /19:8235 /20:8220 /21:5845 /22:8845 /23:10594 /24:67757 /25:274 /26:347 /27:126 /28:118 /29:78 /30:94 /31:4 /32:68 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 3908 815 1247 Supernet, Inc. 18566 534 539 Covad Communications 702 486 783 UUNET - Commercial IP service 7018 468 1357 AT&T 701 459 1578 UUNET Technologies, Inc. 690 453 504 Merit Network 8372 396 409 COLT Internet UK Access Netwo 7066 389 490 Virginia Polytechnic Institut 1239 374 987 Sprint 7843 372 617 Adelphia Corp. 6198 355 446 BellSouth Network Solutions, 6197 354 475 BellSouth Network Solutions, 2386 296 496 AT&T Data Communications Serv 22927 294 295 TELEFONICA DE ARGENTINA 20115 283 408 Charter Communications 6140 278 291 ImpSat 27364 272 278 Armstrong Cable Services 7303 241 242 Telecom Argentina Stet-France 3215 234 310 France Telecom Transpac 209 226 535 Qwest Number of /24s announced per /8 block (Global) ---------------------------------------------- 12:665 13:1 15:4 17:2 20:10 24:789 25:1 32:92 34:1 38:61 40:18 44:2 55:1 57:15 61:453 62:508 63:1923 64:1468 65:1917 66:1580 67:220 68:321 69:64 80:337 81:99 128:150 129:225 130:45 131:83 132:11 133:11 134:144 135:4 136:113 137:115 138:107 139:67 140:146 141:97 142:94 143:46 144:100 145:18 146:265 147:89 148:270 149:75 150:42 151:87 152:250 153:51 154:2 155:108 156:46 157:45 158:123 159:139 160:33 161:60 162:124 163:89 164:311 165:143 166:74 167:320 168:408 169:55 170:310 171:6 192:5297 193:2397 194:1996 195:982 196:479 198:3636 199:3241 200:2873 202:3670 203:5148 204:3070 205:2028 206:2410 207:2430 208:2675 209:2803 210:736 211:326 212:1027 213:855 214:21 215:22 216:3239 217:598 218:82 219:9 220:54 End of report

1 0

Routing Registry
by Volodymyr Yakovenko 17 Mar '03

17 Mar '03

Hello! Could someone comment current situation with Internet Routing Registry System, in particular: 1. Is there any standards or recomendations which describe or define IRR hierarchy and its place in inter-AS interactions? 2. Is there any papers which describe IRR and RIR interoperations? And a bit practical question - is there anything in IETF/RIPE documents which can be used by ISP to declare its willingness to accept _only_ RIR-registered prefixes on external peers? -- Regards, Volodymyr.

1 0

The Cidr Report
by cidr-report＠potaroo.net 14 Mar '03

14 Mar '03

This report has been generated at Fri Mar 14 21:45:21 2003 AEST. The report analyses the BGP Routing Table of an AS4637 (Reach) router and generates a report on aggregation potential within the table. Check http://www.cidr-report.org/as4637 for a current version of this report. Recent Table History Date Prefixes CIDR Agg 07-03-03 120289 86148 08-03-03 120272 86188 09-03-03 120197 86257 10-03-03 120223 86324 11-03-03 120475 86388 12-03-03 120508 86345 13-03-03 120478 86334 14-03-03 120659 86376 AS Summary 14740 Number of ASes in routing system 5812 Number of ASes announcing only one prefix 1562 Largest number of prefixes announced by an AS AS701 : ALTERNET-AS UUNET Technologies, Inc. 73048064 Largest address span announced by an AS (/32s) AS568 : SUMNET-AS DISO-UNRRA Aggregation Summary The algorithm used in this report proposes aggregation only when there is a precise match using the AS path, so as to preserve traffic transit policies. Aggregation is also proposed across non-advertised address space ('holes'). --- 14Mar03 --- ASnum NetsNow NetsAggr NetGain % Gain Description Table 120741 86391 34350 28.4% All ASes AS3908 1097 537 560 51.0% SUPERNETASBLK SuperNet, Inc. AS18566 518 25 493 95.2% COVAD Covad Communications AS701 1562 1129 433 27.7% ALTERNET-AS UUNET Technologies, Inc. AS4151 535 109 426 79.6% USDA-1 USDA AS7843 600 217 383 63.8% ADELPHIA-AS Adelphia Corp. AS4323 555 173 382 68.8% TW-COMM Time Warner Communications, Inc. AS7018 1372 1021 351 25.6% ATT-INTERNET4 AT&T WorldNet Services AS6197 499 160 339 67.9% BATI-ATL BellSouth Network Solutions, Inc AS1221 1101 805 296 26.9% ASN-TELSTRA Telstra Pty Ltd AS1239 974 690 284 29.2% SPRINTLINK Sprint AS22927 295 14 281 95.3% AR-TEAR2-LACNIC TELEFONICA DE ARGENTINA AS4355 391 119 272 69.6% ERMS-EARTHLNK EARTHLINK, INC AS705 449 195 254 56.6% ASN-ALTERNET UUNET Technologies, Inc. AS6198 451 200 251 55.7% BATI-MIA BellSouth Network Solutions, Inc AS4814 264 15 249 94.3% CHINANET-BEIJING-AP China Telecom (Group) AS1 656 431 225 34.3% GNTY-1 Genuity AS17676 230 27 203 88.3% GIGAINFRA XTAGE CORPORATION AS2386 480 280 200 41.7% INS-AS AT&T Data Communications Services AS6347 370 171 199 53.8% DIAMOND SAVVIS Communications Corporation AS22291 242 45 197 81.4% CHARTER-LA Charter Communications AS4134 309 115 194 62.8% CHINANET-BACKBONE No.31,Jin-rong Street AS690 503 313 190 37.8% MERIT-AS-27 Merit Network Inc. AS209 530 341 189 35.7% ASN-QWEST Qwest AS27364 258 84 174 67.4% ACS-INTERNET Armstrong Cable Services AS2048 258 87 171 66.3% LANET-1 State of Louisiana AS17557 370 212 158 42.7% PKTELECOM-AS-AP Pakistan Telecom AS6140 292 140 152 52.1% IMPSAT-USA ImpSat AS22773 184 33 151 82.1% CCINET-2 Cox Communications Inc. Atlanta AS6327 187 40 147 78.6% SHAWFIBER Shaw Fiberlink Limited AS7303 242 98 144 59.5% AR-TAST-LACNIC Telecom Argentina Stet-France Telecom S.A. Total 15774 7826 7948 50.4% Top 30 total Please see http://www.cidr-report.org for the full report ------------------------------------ Copies of this report are mailed to: nanog(a)merit.edu eof-list(a)ripe.net apops(a)apops.net routing-wg(a)ripe.net afnog(a)afnog.org

1 0

Weekly Routing Table Report
by Routing Table Analysis 14 Mar '03

14 Mar '03

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 14 Mar, 2003 Analysis Summary ---------------- BGP routing table entries examined: 122691 Prefixes after maximum aggregation: 77882 Unique aggregates announced to Internet: 59156 Total ASes present in the Internet Routing Table: 14794 Origin-only ASes present in the Internet Routing Table: 12844 Origin ASes announcing only one prefix: 5802 Transit ASes present in the Internet Routing Table: 1950 Transit-only ASes present in the Internet Routing Table: 63 Average AS path length visible in the Internet Routing Table: 5.4 Max AS path length visible: 17 Illegal AS announcements present in the Routing Table: 11 Non-routable prefixes present in the Routing Table: 0 Prefixes being announced from the IANA Reserved Address blocks: 19 Number of addresses announced to Internet: 1200324997 Equivalent to 71 /8s, 139 /16s and 129 /24s Percentage of available address space announced: 32.4 Percentage of allocated address space announced: 58.4 Percentage of available address space allocated: 55.5 Total number of prefixes smaller than registry allocations: 57483 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 20728 Total APNIC prefixes after maximum aggregation: 12168 Prefixes being announced from the APNIC address blocks: 19176 Unique aggregates announced from the APNIC address blocks: 11712 APNIC Region origin ASes present in the Internet Routing Table: 1752 APNIC Region origin ASes announcing only one prefix: 520 APNIC Region transit ASes present in the Internet Routing Table: 291 Average APNIC Region AS path length visible: 5.4 Max APNIC Region AS path length visible: 16 Number of APNIC addresses announced to Internet: 107177632 Equivalent to 6 /8s, 99 /16s and 102 /24s Percentage of available APNIC address space announced: 56.8 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 220/6 ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 75400 Total ARIN prefixes after maximum aggregation: 47895 Prefixes being announced from the ARIN address blocks: 53746 Unique aggregates announced from the ARIN address blocks: 16847 ARIN Region origin ASes present in the Internet Routing Table: 8215 ARIN Region origin ASes announcing only one prefix: 2774 ARIN Region transit ASes present in the Internet Routing Table: 783 Average ARIN Region AS path length visible: 5.3 Max ARIN Region AS path length visible: 17 Number of ARIN addresses announced to Internet: 187492544 Equivalent to 11 /8s, 44 /16s and 232 /24s Percentage of available ARIN address space announced: 69.8 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: 21250 Total RIPE prefixes after maximum aggregation: 15599 Prefixes being announced from the RIPE address blocks: 17757 Unique aggregates announced from the RIPE address blocks: 11851 RIPE Region origin ASes present in the Internet Routing Table: 4436 RIPE Region origin ASes announcing only one prefix: 2422 RIPE Region transit ASes present in the Internet Routing Table: 800 Average RIPE Region AS path length visible: 5.9 Max RIPE Region AS path length visible: 17 Number of RIPE addresses announced to Internet: 127895552 Equivalent to 7 /8s, 159 /16s and 136 /24s Percentage of available RIPE address space announced: 76.2 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, 28672 - 29695 RIPE Address Blocks 62/8, 80/7, 82/8, 188/8, 193/8, 194/7, 212/7 and 217/8 LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 5303 Total LACNIC prefixes after maximum aggregation: 2220 Prefixes being announced from the LACNIC address blocks: 4681 Unique aggregates announced from the LACNIC address blocks: 3037 LACNIC Region origin ASes present in the Internet Routing Table: 330 LACNIC Region origin ASes announcing only one prefix: 86 LACNIC Region transit ASes present in the Internet Routing Table: 66 Average LACNIC Region AS path length visible: 5.9 Max LACNIC Region AS path length visible: 15 Number of LACNIC addresses announced to Internet: 12343552 Equivalent to 0 /8s, 188 /16s and 89 /24s Percentage of available LACNIC address space announced: 73.6 LACNIC AS Blocks 26592 - 26623, 27648 - 28671 LACNIC Address Blocks 200/8 APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1221 1097 1106 801 Telstra Pty Ltd 703 404 370 313 UUNET 2907 387 1959 366 SINET Japan 17557 367 26 141 Pakistan Telecom 2764 324 340 291 connect.com.au pty ltd 4134 309 2662 98 Data Communications Bureau 7474 306 275 207 Optus Communications Pty Ltd 4814 264 79 15 China Telecom (Group) 3786 249 772 211 DACOM Corporation 17676 232 3574 24 XTAGE CORPORATION 4755 230 133 74 Videsh Sanchar Nigam Ltd. Aut 9583 217 33 13 Satyam Infoway Ltd., 4766 206 2074 155 Korea Internet Exchange for " 9443 179 57 77 Primus Telecommunications 9800 166 205 41 CHINA UNICOM 4765 152 10 14 World Net & Services Co., Ltd 9238 138 8 17 TATA ISP 4716 128 733 122 TTnet 4739 128 57 116 Commerical Internet eXchange 7539 127 164 120 TANet2, sponsored by NSC, TAI ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 701 1571 8855 1128 UUNET Technologies, Inc. 7018 1374 7149 954 AT&T 3908 1263 1590 490 Supernet, Inc. 1239 980 3153 694 Sprint 1 663 8088 432 GENUITY 7843 603 413 190 Adelphia Corp. 4323 556 490 172 Time Warner Communications, I 852 553 1107 435 Telus Advanced Communications 4151 534 691 59 USDA 209 532 2091 340 Qwest 18566 518 119 10 Covad Communications 690 503 73 313 Merit Network 6197 493 559 115 BellSouth Network Solutions, 3561 492 2303 338 Cable & Wireless USA 7066 490 204 254 Virginia Polytechnic Institut 2386 480 479 242 AT&T Data Communications Serv 705 449 165 195 UUNET Technologies, Inc. 6198 449 196 196 BellSouth Network Solutions, 3549 405 695 309 Global Crossing 20115 393 166 262 Charter Communications RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 702 786 2234 650 UUNET - Commercial IP service 3301 314 1143 304 TeliaNet Sweden 3215 307 818 172 France Telecom Transpac 3320 266 1996 229 Deutsche Telekom AG 680 232 2054 229 DFN-IP service G-WiN 1257 219 370 196 SWIPnet Swedish IP Network 5400 219 78 102 BT Ignite European Backbone 719 202 307 125 LANLINK autonomous system 5515 186 779 160 Sonera Solution Autonomous Sy 786 179 1874 179 The JANET IP Service 8708 153 42 150 Romania Data Systems S.A. 20858 147 17 3 This AS will be used to conne 3303 145 517 144 Swisscom Ltd 8220 128 182 119 COLT Internet - International 12302 123 18 30 MobiFon S.A. 2856 118 1298 108 BTnet UK Regional network 3269 110 750 60 TELECOM ITALIA 3233 108 11 12 RNC - Romanian Natioanal R&D 3246 105 360 102 Song Networks 3352 101 670 31 Ibernet, Internet Access Netw LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 6140 292 98 105 ImpSat 7303 242 36 56 Telecom Argentina Stet-France 8151 215 341 117 UniNet S.A. de C.V. 11172 161 66 33 Servicios Alestra S.A de C.V 6503 158 191 110 AVANTEL, S.A. 16814 139 9 18 NSS, S.A. 13999 127 36 8 Mega Cable S.A. de C.V. 11340 110 3 38 Red Universitaria Nacional 10620 107 7 31 TVCABLE BOGOTA 6147 76 62 20 Telefonica Del Peru 1916 75 306 45 Fundacao de Amparo a Pesquisa 11992 74 8 35 Integrated Systems 8065 73 6 18 Empresas Publicas de Medellin 6535 72 5 23 Chilesat Servicios Empresari 15311 71 27 36 Telefonica Empresas 4270 69 18 10 Red de Interconexion Universi 7984 66 11 42 Global One Colombia 7080 64 4 1 Electronica y Comunicaciones 7927 64 5 39 Global One Venezuela 11830 61 5 20 Instituto Costarricense de El Global Per AS Maximum Aggr summary ---------------------------------- ASN No of nets Net Savings Description 3908 1263 773 Supernet, Inc. 18566 518 508 Covad Communications 4151 534 475 USDA 7018 1374 420 AT&T 7843 603 413 Adelphia Corp. 4323 556 384 Time Warner Communications, I 6197 493 378 BellSouth Network Solutions, 11492 321 317 Cable One 1221 1097 296 Telstra Pty Ltd 6347 371 291 SAVVIS Communications Corpora 1239 980 286 Sprint 22927 295 281 TELEFONICA DE ARGENTINA 4355 391 279 EarthLink, Inc. 705 449 254 UUNET Technologies, Inc. 6198 449 253 BellSouth Network Solutions, 4814 264 249 China Telecom (Group) 27364 258 240 Armstrong Cable Services 2386 480 238 AT&T Data Communications Serv 7066 490 236 Virginia Polytechnic Institut 1 663 231 GENUITY List of Unregistered ASNs (Global) ---------------------------------- Bad AS Designation Network Transit AS Description 1877 UNALLOCATED 192.108.199.0/24 1880 Stupi, house man's p 64521 PRIVATE 198.189.23.0/24 2151 California State Uni 64521 PRIVATE 198.189.24.0/24 2151 California State Uni 64524 PRIVATE 198.189.134.0/24 2151 California State Uni 64524 PRIVATE 198.189.135.0/24 2151 California State Uni 64524 PRIVATE 198.189.136.0/24 2151 California State Uni 64524 PRIVATE 198.189.137.0/24 2151 California State Uni 64524 PRIVATE 198.189.138.0/24 2151 California State Uni 64521 PRIVATE 198.189.158.0/24 2151 California State Uni 64521 PRIVATE 198.189.235.0/24 2151 California State Uni 64521 PRIVATE 198.189.236.0/24 2151 California State Uni Advertised Unregistered Addresses --------------------------------- Network Origin AS Description 39.0.0.0/8 4554 Exchange Point Blocks 132.0.0.0/10 568 DISO-UNRRA 135.0.0.0/13 10455 Lucent Technologies 137.0.0.0/13 568 DISO-UNRRA 158.0.0.0/13 568 DISO-UNRRA 192.44.0.0/19 702 UUNET - Commercial IP service 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 192.119.135.0/24 270 NASA 192.135.50.0/24 7018 AT&T 192.136.79.0/24 719 LANLINK autonomous system 192.136.135.0/24 1239 Sprint 192.153.136.0/21 568 DISO-UNRRA 192.156.164.0/24 19548 Adelphia Business Solutions 192.158.249.0/24 27319 INTERNET SOFTWARE CONSORTIUM, 192.172.0.0/19 568 DISO-UNRRA 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 /8:17 /9:3 /10:8 /11:13 /12:46 /13:89 /14:238 /15:448 /16:7343 /17:1609 /18:2908 /19:8230 /20:8163 /21:5852 /22:8860 /23:10607 /24:67496 /25:167 /26:193 /27:109 /28:87 /29:63 /30:78 /31:4 /32:60 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 3908 832 1263 Supernet, Inc. 18566 513 518 Covad Communications 702 490 786 UUNET - Commercial IP service 7018 478 1374 AT&T 690 452 503 Merit Network 701 451 1571 UUNET Technologies, Inc. 7066 389 490 Virginia Polytechnic Institut 1239 369 980 Sprint 6197 362 493 BellSouth Network Solutions, 7843 361 603 Adelphia Corp. 6198 359 449 BellSouth Network Solutions, 11492 320 321 Cable One 22927 294 295 TELEFONICA DE ARGENTINA 2386 280 480 AT&T Data Communications Serv 6140 279 292 ImpSat 20115 269 393 Charter Communications 27364 250 258 Armstrong Cable Services 7303 241 242 Telecom Argentina Stet-France 3215 232 307 France Telecom Transpac 209 220 532 Qwest Number of /24s announced per /8 block (Global) ---------------------------------------------- 12:659 13:1 15:4 17:2 20:10 24:911 25:1 32:90 34:1 38:60 40:18 44:2 55:1 57:15 61:452 62:497 63:1927 64:1440 65:1918 66:1551 67:218 68:294 69:56 80:330 81:98 128:98 129:224 130:42 131:83 132:11 133:11 134:146 135:4 136:114 137:116 138:106 139:65 140:145 141:124 142:94 143:47 144:93 145:18 146:264 147:86 148:272 149:73 150:43 151:113 152:253 153:51 154:2 155:108 156:43 157:45 158:123 159:139 160:35 161:60 162:126 163:86 164:304 165:136 166:74 167:319 168:394 169:55 170:308 171:9 192:5301 193:2393 194:2004 195:983 196:475 198:3606 199:3223 200:2896 202:3670 203:5100 204:3075 205:2020 206:2405 207:2419 208:2677 209:2797 210:739 211:327 212:974 213:768 214:21 215:21 216:3235 217:605 218:83 219:9 220:52 End of report

1 0

The Cidr Report
by cidr-report＠potaroo.net 07 Mar '03

07 Mar '03

This report has been generated at Fri Mar 7 21:46:45 2003 AEST. The report analyses the BGP Routing Table of an AS4637 (Reach) router and generates a report on aggregation potential within the table. Check http://www.cidr-report.org/as4637 for a current version of this report. Recent Table History Date Prefixes CIDR Agg 28-02-03 119708 85685 01-03-03 119794 85736 02-03-03 119902 85774 03-03-03 119905 85881 04-03-03 120066 86042 05-03-03 120121 86071 06-03-03 120244 86209 07-03-03 120289 86173 AS Summary 14703 Number of ASes in routing system 5787 Number of ASes announcing only one prefix 1586 Largest number of prefixes announced by an AS AS701 : ALTERNET-AS UUNET Technologies, Inc. 72916992 Largest address span announced by an AS (/32s) AS568 : SUMNET-AS DISO-UNRRA Aggregation Summary The algorithm used in this report proposes aggregation only when there is a precise match using the AS path, so as to preserve traffic transit policies. Aggregation is also proposed across non-advertised address space ('holes'). --- 07Mar03 --- ASnum NetsNow NetsAggr NetGain % Gain Description Table 120335 86155 34180 28.4% All ASes AS3908 1085 567 518 47.7% SUPERNETASBLK SuperNet, Inc. AS18566 507 9 498 98.2% COVAD Covad Communications AS701 1586 1146 440 27.7% ALTERNET-AS UUNET Technologies, Inc. AS4151 532 106 426 80.1% USDA-1 USDA AS4323 537 170 367 68.3% TW-COMM Time Warner Communications, Inc. AS7843 590 232 358 60.7% ADELPHIA-AS Adelphia Corp. AS7018 1380 1024 356 25.8% ATT-INTERNET4 AT&T WorldNet Services AS6197 498 157 341 68.5% BATI-ATL BellSouth Network Solutions, Inc AS1221 1113 809 304 27.3% ASN-TELSTRA Telstra Pty Ltd AS1239 973 691 282 29.0% SPRINTLINK Sprint AS4355 401 120 281 70.1% ERMS-EARTHLNK EARTHLINK, INC AS22927 295 14 281 95.3% AR-TEAR2-LACNIC TELEFONICA DE ARGENTINA AS705 450 196 254 56.4% ASN-ALTERNET UUNET Technologies, Inc. AS4814 263 15 248 94.3% CHINANET-BEIJING-AP China Telecom (Group) AS6198 450 203 247 54.9% BATI-MIA BellSouth Network Solutions, Inc AS1 662 436 226 34.1% GNTY-1 Genuity AS22291 243 31 212 87.2% CHARTER-LA Charter Communications AS27364 240 29 211 87.9% ACS-INTERNET Armstrong Cable Services AS17676 230 26 204 88.7% GIGAINFRA XTAGE CORPORATION AS2386 483 282 201 41.6% INS-AS AT&T Data Communications Services AS4134 304 113 191 62.8% CHINANET-BACKBONE No.31,Jin-rong Street AS209 532 342 190 35.7% ASN-QWEST Qwest AS690 500 310 190 38.0% MERIT-AS-27 Merit Network Inc. AS6347 370 190 180 48.6% DIAMOND SAVVIS Communications Corporation AS2048 259 87 172 66.4% LANET-1 State of Louisiana AS17557 359 206 153 42.6% PKTELECOM-AS-AP Pakistan Telecom AS7303 240 90 150 62.5% AR-TAST-LACNIC Telecom Argentina Stet-France Telecom S.A. AS22773 182 32 150 82.4% CCINET-2 Cox Communications Inc. Atlanta AS6140 284 136 148 52.1% IMPSAT-USA ImpSat AS11492 322 174 148 46.0% CABLEONE CABLE ONE Total 15870 7943 7927 49.9% Top 30 total Please see http://www.cidr-report.org for the full report ------------------------------------ Copies of this report are mailed to: nanog(a)merit.edu eof-list(a)ripe.net apops(a)apops.net routing-wg(a)ripe.net afnog(a)afnog.org

1 0

Weekly Routing Table Report
by Routing Table Analysis 07 Mar '03

07 Mar '03

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 07 Mar, 2003 Analysis Summary ---------------- BGP routing table entries examined: 122334 Prefixes after maximum aggregation: 77814 Unique aggregates announced to Internet: 58981 Total ASes present in the Internet Routing Table: 14766 Origin-only ASes present in the Internet Routing Table: 12811 Origin ASes announcing only one prefix: 5791 Transit ASes present in the Internet Routing Table: 1955 Transit-only ASes present in the Internet Routing Table: 66 Average AS path length visible in the Internet Routing Table: 5.4 Max AS path length visible: 17 Illegal AS announcements present in the Routing Table: 11 Non-routable prefixes present in the Routing Table: 0 Prefixes being announced from the IANA Reserved Address blocks: 17 Number of addresses announced to Internet: 1199996293 Equivalent to 71 /8s, 134 /16s and 125 /24s Percentage of available address space announced: 32.4 Percentage of allocated address space announced: 58.3 Percentage of available address space allocated: 55.5 Total number of prefixes smaller than registry allocations: 57285 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 20595 Total APNIC prefixes after maximum aggregation: 12127 Prefixes being announced from the APNIC address blocks: 19075 Unique aggregates announced from the APNIC address blocks: 11688 APNIC Region origin ASes present in the Internet Routing Table: 1747 APNIC Region origin ASes announcing only one prefix: 523 APNIC Region transit ASes present in the Internet Routing Table: 293 Average APNIC Region AS path length visible: 5.4 Max APNIC Region AS path length visible: 16 Number of APNIC addresses announced to Internet: 106802592 Equivalent to 6 /8s, 93 /16s and 173 /24s Percentage of available APNIC address space announced: 56.6 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 220/6 ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 75239 Total ARIN prefixes after maximum aggregation: 47925 Prefixes being announced from the ARIN address blocks: 53478 Unique aggregates announced from the ARIN address blocks: 16726 ARIN Region origin ASes present in the Internet Routing Table: 8213 ARIN Region origin ASes announcing only one prefix: 2776 ARIN Region transit ASes present in the Internet Routing Table: 782 Average ARIN Region AS path length visible: 5.3 Max ARIN Region AS path length visible: 17 Number of ARIN addresses announced to Internet: 187715776 Equivalent to 11 /8s, 48 /16s and 80 /24s Percentage of available ARIN address space announced: 69.9 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: 21209 Total RIPE prefixes after maximum aggregation: 15553 Prefixes being announced from the RIPE address blocks: 17705 Unique aggregates announced from the RIPE address blocks: 11827 RIPE Region origin ASes present in the Internet Routing Table: 4412 RIPE Region origin ASes announcing only one prefix: 2407 RIPE Region transit ASes present in the Internet Routing Table: 803 Average RIPE Region AS path length visible: 5.9 Max RIPE Region AS path length visible: 17 Number of RIPE addresses announced to Internet: 127701760 Equivalent to 7 /8s, 156 /16s and 147 /24s Percentage of available RIPE address space announced: 76.1 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, 28672 - 29695 RIPE Address Blocks 62/8, 80/7, 82/8, 188/8, 193/8, 194/7, 212/7 and 217/8 LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 5281 Total LACNIC prefixes after maximum aggregation: 2209 Prefixes being announced from the LACNIC address blocks: 4661 Unique aggregates announced from the LACNIC address blocks: 3034 LACNIC Region origin ASes present in the Internet Routing Table: 330 LACNIC Region origin ASes announcing only one prefix: 85 LACNIC Region transit ASes present in the Internet Routing Table: 67 Average LACNIC Region AS path length visible: 5.8 Max LACNIC Region AS path length visible: 15 Number of LACNIC addresses announced to Internet: 12217856 Equivalent to 0 /8s, 186 /16s and 110 /24s Percentage of available LACNIC address space announced: 72.8 LACNIC AS Blocks 26592 - 26623, 27648 - 28671 LACNIC Address Blocks 200/8 APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1221 1108 1119 804 Telstra Pty Ltd 703 402 369 313 UUNET 2907 387 1960 366 SINET Japan 17557 359 26 133 Pakistan Telecom 2764 326 341 293 connect.com.au pty ltd 4134 304 2637 96 Data Communications Bureau 7474 303 275 206 Optus Communications Pty Ltd 4814 263 79 15 China Telecom (Group) 3786 242 773 207 DACOM Corporation 4755 234 133 73 Videsh Sanchar Nigam Ltd. Aut 17676 232 3574 24 XTAGE CORPORATION 9583 217 33 13 Satyam Infoway Ltd., 4766 208 2074 155 Korea Internet Exchange for " 9443 178 57 76 Primus Telecommunications 9800 166 205 41 CHINA UNICOM 4765 152 10 14 World Net & Services Co., Ltd 9238 138 8 17 TATA ISP 4739 128 57 116 Commerical Internet eXchange 4716 127 733 121 TTnet 9768 125 384 64 Korea Telecom ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 701 1598 8874 1148 UUNET Technologies, Inc. 7018 1382 7166 957 AT&T 3908 1247 1590 485 Supernet, Inc. 1239 979 3153 692 Sprint 1 670 8088 438 GENUITY 7843 593 408 207 Adelphia Corp. 852 576 1107 443 Telus Advanced Communications 4323 538 473 169 Time Warner Communications, I 209 534 2092 341 Qwest 4151 532 691 59 USDA 690 508 74 317 Merit Network 18566 507 116 9 Covad Communications 3561 498 2304 344 Cable & Wireless USA 6197 498 555 114 BellSouth Network Solutions, 7066 484 204 254 Virginia Polytechnic Institut 2386 483 479 244 AT&T Data Communications Serv 705 450 165 196 UUNET Technologies, Inc. 6198 448 196 199 BellSouth Network Solutions, 3549 401 694 307 Global Crossing 4355 401 308 112 EarthLink, Inc. RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 702 789 2233 652 UUNET - Commercial IP service 3301 315 1142 303 TeliaNet Sweden 3215 314 818 172 France Telecom Transpac 3320 265 1996 228 Deutsche Telekom AG 680 232 2054 229 DFN-IP service G-WiN 1257 219 370 196 SWIPnet Swedish IP Network 719 203 307 127 LANLINK autonomous system 5400 198 70 98 BT Ignite European Backbone 5515 186 779 160 Sonera Solution Autonomous Sy 786 179 1874 179 The JANET IP Service 8708 153 42 150 Romania Data Systems S.A. 20858 148 17 3 This AS will be used to conne 3303 145 517 144 Swisscom Ltd 8220 126 182 117 COLT Internet - International 12302 122 17 29 MobiFon S.A. 2856 117 1298 107 BTnet UK Regional network 3269 111 751 61 TELECOM ITALIA 3233 106 10 19 RNC - Romanian Natioanal R&D 3246 105 360 102 Song Networks 5511 104 175 80 France Telecom LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 6140 284 98 104 ImpSat 7303 240 36 49 Telecom Argentina Stet-France 8151 214 341 116 UniNet S.A. de C.V. 11172 161 66 33 Servicios Alestra S.A de C.V 6503 157 191 110 AVANTEL, S.A. 16814 139 9 18 NSS, S.A. 13999 127 36 8 Mega Cable S.A. de C.V. 11340 110 3 38 Red Universitaria Nacional 10620 107 7 31 TVCABLE BOGOTA 6147 74 62 20 Telefonica Del Peru 1916 73 306 44 Fundacao de Amparo a Pesquisa 6535 72 5 23 Chilesat Servicios Empresari 8065 72 6 21 Empresas Publicas de Medellin 11992 71 7 32 Integrated Systems 15311 71 27 36 Telefonica Empresas 4270 69 18 10 Red de Interconexion Universi 7984 66 11 42 Global One Colombia 7080 64 4 1 Electronica y Comunicaciones 7927 64 5 39 Global One Venezuela 11830 61 4 20 Instituto Costarricense de El Global Per AS Maximum Aggr summary ---------------------------------- ASN No of nets Net Savings Description 3908 1247 762 Supernet, Inc. 18566 507 498 Covad Communications 4151 532 473 USDA 7018 1382 425 AT&T 7843 593 386 Adelphia Corp. 6197 498 384 BellSouth Network Solutions, 4323 538 369 Time Warner Communications, I 11492 322 319 Cable One 1221 1108 304 Telstra Pty Ltd 6347 371 292 SAVVIS Communications Corpora 4355 401 289 EarthLink, Inc. 1239 979 287 Sprint 22927 295 281 TELEFONICA DE ARGENTINA 705 450 254 UUNET Technologies, Inc. 6198 448 249 BellSouth Network Solutions, 4814 263 248 China Telecom (Group) 2386 483 239 AT&T Data Communications Serv 1 670 232 GENUITY 7066 484 230 Virginia Polytechnic Institut 17557 359 226 Pakistan Telecom List of Unregistered ASNs (Global) ---------------------------------- Bad AS Designation Network Transit AS Description 1877 UNALLOCATED 192.108.199.0/24 1880 Stupi, house man's p 64521 PRIVATE 198.189.23.0/24 2151 California State Uni 64521 PRIVATE 198.189.24.0/24 2151 California State Uni 64524 PRIVATE 198.189.134.0/24 2151 California State Uni 64524 PRIVATE 198.189.135.0/24 2151 California State Uni 64524 PRIVATE 198.189.136.0/24 2151 California State Uni 64524 PRIVATE 198.189.137.0/24 2151 California State Uni 64524 PRIVATE 198.189.138.0/24 2151 California State Uni 64521 PRIVATE 198.189.158.0/24 2151 California State Uni 64521 PRIVATE 198.189.235.0/24 2151 California State Uni 64521 PRIVATE 198.189.236.0/24 2151 California State Uni Advertised Unregistered Addresses --------------------------------- Network Origin AS Description 39.0.0.0/8 4554 Exchange Point Blocks 132.0.0.0/10 568 DISO-UNRRA 135.0.0.0/13 10455 Lucent Technologies 137.0.0.0/13 568 DISO-UNRRA 158.0.0.0/13 568 DISO-UNRRA 192.44.0.0/19 702 UUNET - Commercial IP service 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 192.119.135.0/24 270 NASA 192.135.50.0/24 7018 AT&T 192.136.79.0/24 719 LANLINK autonomous system 192.153.136.0/21 568 DISO-UNRRA 192.156.164.0/24 19548 Adelphia Business Solutions 192.172.0.0/19 568 DISO-UNRRA 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 /8:17 /9:3 /10:8 /11:13 /12:46 /13:89 /14:240 /15:445 /16:7347 /17:1605 /18:2906 /19:8197 /20:8120 /21:5828 /22:8841 /23:10593 /24:67303 /25:166 /26:188 /27:104 /28:80 /29:59 /30:72 /31:4 /32:60 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 3908 818 1247 Supernet, Inc. 18566 502 507 Covad Communications 702 494 789 UUNET - Commercial IP service 7018 485 1382 AT&T 701 465 1598 UUNET Technologies, Inc. 690 457 508 Merit Network 7066 383 484 Virginia Polytechnic Institut 6197 366 498 BellSouth Network Solutions, 1239 365 979 Sprint 6198 358 448 BellSouth Network Solutions, 7843 355 593 Adelphia Corp. 11492 321 322 Cable One 22927 294 295 TELEFONICA DE ARGENTINA 2386 283 483 AT&T Data Communications Serv 6140 271 284 ImpSat 20115 269 397 Charter Communications 3215 239 314 France Telecom Transpac 7303 239 240 Telecom Argentina Stet-France 27364 232 240 Armstrong Cable Services 4355 229 401 EarthLink, Inc. Number of /24s announced per /8 block (Global) ---------------------------------------------- 12:658 13:1 15:4 17:2 20:9 24:879 25:1 32:90 34:1 38:60 40:18 44:2 55:1 57:15 61:452 62:509 63:1929 64:1390 65:1898 66:1471 67:214 68:296 69:54 80:330 81:97 128:148 129:223 130:40 131:82 132:11 133:11 134:146 135:4 136:114 137:117 138:101 139:74 140:138 141:123 142:94 143:47 144:89 145:18 146:264 147:86 148:272 149:73 150:43 151:110 152:258 153:51 154:2 155:107 156:42 157:41 158:124 159:140 160:34 161:60 162:136 163:86 164:297 165:142 166:80 167:321 168:393 169:54 170:312 171:8 192:5287 193:2392 194:2009 195:958 196:473 198:3597 199:3213 200:2888 202:3643 203:5092 204:3040 205:2029 206:2414 207:2427 208:2703 209:2802 210:738 211:334 212:969 213:756 214:21 215:21 216:3256 217:598 218:80 219:14 220:52 End of report

1 0

GEANT implementing "BGP Guard Time" on their Junipers (was: Route update stats)
by Christian Panigl, ACOnet/VIX/UniVie 06 Mar '03

06 Mar '03

Dear all, remembering the thread on "Route update stats" in December ? Specifically: http://www.ripe.net/ripe/mail-archives/routing-wg/2002/msg00050.html Now Christophe Belmont, GEANT-NOC, together with Juniper found a solution and we successfully tested it: They implemented "BGP Guard Time" (Cisco like 30 seconds) and the result was impressive: The number of BGP update messages received from GEANT dropped by ~85% and the number of "flaps" seen from GEANT by ~75% ! BGP guard time (30sec) means that updates are only sent to neighbors for prefixes which have stayed in the routing table for 30 seconds. I'm sure you know the specific problem, that when a prefix is withdrawn in a meshed environment, lots of updates are sent from BGP entities which do think that they still have a (longer) path. It may take quite some time until all these false updates are dying down. Without this guard time a BGP speaker immediately forwards all those false updates to all peers. I guess that if you would globally disable BGP guard time (which fortunately is default ON=30seconds for Ciscos but apparently not for Junipers) quite some routers would collapse on these withdrawal aftermaths. So my suggestion would be for all ISPs using Juniper routers: turn on "BGP Guard Time" (Cisco like 30 seconds). Christophe, probably you can post the details to the list !? 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) --- --- ---------------------------------------------------------------------- ---

3 2

RE: GEANT implementing "BGP Guard Time" on their Junipers (was: R oute update stats)
by Guy Davies 04 Mar '03

04 Mar '03

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi All, If I'm understanding Christian correctly, he's referring to "out-delay <seconds>". This can be configured for all groups [edit protocols bgp], all neighbours in a group [edit protocols bgp group <foo>] or for an individual neighbour [edit protocols bgp group <foo> neighbour <bar>]. Regards, Guy > -----Original Message----- > From: Christian Panigl, ACOnet/VIX/UniVie > [mailto:panigl@cc.univie.ac.at] > Sent: Tuesday, March 04, 2003 4:46 PM > To: routing-wg(a)ripe.net > Cc: christophe.belmont(a)c-s.fr; panigl(a)cc.univie.ac.at > Subject: GEANT implementing "BGP Guard Time" on their Junipers (was: > Route update stats) > > > Dear all, > > remembering the thread on "Route update stats" in December ? > > Specifically: > > http://www.ripe.net/ripe/mail-archives/routing-wg/2002/msg00050.html > > Now Christophe Belmont, GEANT-NOC, together with Juniper found a > solution and we successfully tested it: > > They implemented "BGP Guard Time" (Cisco like 30 seconds) and the > result was impressive: > > The number of BGP update messages received from GEANT > dropped by ~85% > and the number of "flaps" seen from GEANT by ~75% ! > > BGP guard time (30sec) means that updates are only sent > to neighbors for > prefixes which have stayed in the routing table for 30 > seconds. I'm > sure you know the specific problem, that when a prefix is > withdrawn in a > meshed environment, lots of updates are sent from BGP > entities which do > think that they still have a (longer) path. It may take > quite some time > until all these false updates are dying down. Without > this guard time a > BGP speaker immediately forwards all those false updates > to all peers. > I guess that if you would globally disable BGP guard time (which > fortunately is default ON=30seconds for Ciscos but > apparently not for > Junipers) quite some routers would collapse on these withdrawal > aftermaths. > > So my suggestion would be for all ISPs using Juniper > routers: turn on > "BGP Guard Time" (Cisco like 30 seconds). > > Christophe, probably you can post the details to the list !? > > 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) --- > --- > -------------------------------------------------------------- > -------- --- > -----BEGIN PGP SIGNATURE----- Version: PGP 8.0 iQA/AwUBPmThJ43dwu/Ss2PCEQLPNQCgjYgcomnM4xZ9MD/5Ia2IETGIApkAnivl Iood5hJCA7mbYip1JT8xQXVW =jyoz -----END PGP SIGNATURE----- This e-mail is private and may be confidential and is for the intended recipient only. If misdirected, please notify us by telephone and confirm that it has been deleted from your system and any copies destroyed. If you are not the intended recipient you are strictly prohibited from using, printing, copying, distributing or disseminating this e-mail or any information contained in it. We use reasonable endeavors to virus scan all e-mails leaving the Company but no warranty is given that this e-mail and any attachments are virus free. You should undertake your own virus checking. The right to monitor e-mail communications through our network is reserved by us.

1 0

The Cidr Report
by cidr-report＠potaroo.net 28 Feb '03

28 Feb '03

This report has been generated at Fri Feb 28 21:46:34 2003 AEST. The report analyses the BGP Routing Table of an AS4637 (Reach) router and generates a report on aggregation potential within the table. Check http://www.cidr-report.org/as4637 for a current version of this report. Recent Table History Date Prefixes CIDR Agg 21-02-03 119400 85542 22-02-03 119615 85397 23-02-03 119379 85455 24-02-03 119479 85425 25-02-03 119470 85630 26-02-03 119690 85676 27-02-03 119740 85694 28-02-03 119708 85768 AS Summary 14678 Number of ASes in routing system 5782 Number of ASes announcing only one prefix 1604 Largest number of prefixes announced by an AS AS701 : ALTERNET-AS UUNET Technologies, Inc. 73080832 Largest address span announced by an AS (/32s) AS568 : SUMNET-AS DISO-UNRRA Aggregation Summary The algorithm used in this report proposes aggregation only when there is a precise match using the AS path, so as to preserve traffic transit policies. Aggregation is also proposed across non-advertised address space ('holes'). --- 28Feb03 --- ASnum NetsNow NetsAggr NetGain % Gain Description Table 119861 85734 34127 28.5% All ASes AS3908 1084 568 516 47.6% SUPERNETASBLK SuperNet, Inc. AS18566 491 8 483 98.4% COVAD Covad Communications AS701 1604 1151 453 28.2% ALTERNET-AS UUNET Technologies, Inc. AS4151 532 105 427 80.3% USDA-1 USDA AS4323 533 169 364 68.3% TW-COMM Time Warner Communications, Inc. AS7018 1385 1025 360 26.0% ATT-INTERNET4 AT&T WorldNet Services AS7843 556 224 332 59.7% ADELPHIA-AS Adelphia Corp. AS6197 485 157 328 67.6% BATI-ATL BellSouth Network Solutions, Inc AS7046 559 244 315 56.4% UUNET-CUSTOMER UUNET Technologies, Inc. AS1221 1121 816 305 27.2% ASN-TELSTRA Telstra Pty Ltd AS1239 969 686 283 29.2% SPRINTLINK Sprint AS4355 402 119 283 70.4% ERMS-EARTHLNK EARTHLINK, INC AS22927 295 14 281 95.3% AR-TEAR2-LACNIC TELEFONICA DE ARGENTINA AS705 450 196 254 56.4% ASN-ALTERNET UUNET Technologies, Inc. AS4814 264 15 249 94.3% CHINANET-BEIJING-AP China Telecom (Group) AS6198 439 205 234 53.3% BATI-MIA BellSouth Network Solutions, Inc AS1 662 435 227 34.3% GNTY-1 Genuity AS22291 243 31 212 87.2% CHARTER-LA Charter Communications AS17676 230 26 204 88.7% GIGAINFRA XTAGE CORPORATION AS6347 369 168 201 54.5% DIAMOND SAVVIS Communications Corporation AS2386 478 283 195 40.8% INS-AS AT&T Data Communications Services AS209 528 337 191 36.2% ASN-QWEST Qwest AS4134 304 113 191 62.8% CHINANET-BACKBONE No.31,Jin-rong Street AS690 498 308 190 38.2% MERIT-AS-27 Merit Network Inc. AS2048 258 87 171 66.3% LANET-1 State of Louisiana AS852 599 444 155 25.9% ASN852 Telus Advanced Communications AS7303 240 90 150 62.5% AR-TAST-LACNIC Telecom Argentina Stet-France Telecom S.A. AS22773 182 32 150 82.4% CCINET-2 Cox Communications Inc. Atlanta AS6140 285 136 149 52.3% IMPSAT-USA ImpSat AS6327 187 41 146 78.1% SHAWFIBER Shaw Fiberlink Limited Total 16232 8233 7999 49.3% Top 30 total Please see http://www.cidr-report.org for the full report ------------------------------------ Copies of this report are mailed to: nanog(a)merit.edu eof-list(a)ripe.net apops(a)apops.net routing-wg(a)ripe.net afnog(a)afnog.org

1 0