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The Cidr Report
by cidr-report＠potaroo.net 13 Dec '02

13 Dec '02

This report has been generated at Fri Dec 13 21:45:30 2002 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 06-12-02 116870 84511 07-12-02 116855 84559 08-12-02 116930 84442 09-12-02 116755 84596 10-12-02 116879 84724 11-12-02 117039 84740 12-12-02 117133 84733 13-12-02 116860 84827 AS Summary 14178 Number of ASes in routing system 5599 Number of ASes announcing only one prefix 1805 Largest number of prefixes announced by an AS AS3908 : SUPERNETASBLK SuperNet, Inc. 72982528 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'). --- 13Dec02 --- ASnum NetsNow NetsAggr NetGain % Gain Description Table 116935 84790 32145 27.5% All ASes AS3908 1805 1063 742 41.1% SUPERNETASBLK SuperNet, Inc. AS701 1676 1219 457 27.3% ALTERNET-AS UUNET Technologies, Inc. AS18566 419 5 414 98.8% COVAD Covad Communications AS7018 1389 1014 375 27.0% ATT-INTERNET4 AT&T WorldNet Services AS4323 524 185 339 64.7% TW-COMM Time Warner Communications, Inc. AS1221 1162 843 319 27.5% ASN-TELSTRA Telstra Pty Ltd AS6197 456 141 315 69.1% BATI-ATL BellSouth Network Solutions, Inc AS7843 596 295 301 50.5% ADELPHIA-AS Adelphia Corp. AS4355 405 136 269 66.4% ERMS-EARTHLNK EARTHLINK, INC AS6347 352 85 267 75.9% DIAMOND SAVVIS Communications Corporation AS7046 586 319 267 45.6% UUNET-CUSTOMER UUNET Technologies, Inc. AS22927 289 22 267 92.4% AR-TEAR2-LACNIC TELEFONICA DE ARGENTINA AS1239 935 670 265 28.3% SPRINTLINK Sprint AS705 434 195 239 55.1% ASN-ALTERNET UUNET Technologies, Inc. AS4814 249 15 234 94.0% CHINANET-BEIJING-AP China Telecom (Group) AS1 665 440 225 33.8% GNTY-1 Genuity AS6198 420 201 219 52.1% BATI-MIA BellSouth Network Solutions, Inc AS17676 232 28 204 87.9% GIGAINFRA XTAGE CORPORATION AS690 513 319 194 37.8% MERIT-AS-27 Merit Network Inc. AS6140 314 121 193 61.5% IMPSAT-USA ImpSat AS4151 326 135 191 58.6% USDA-1 USDA AS4134 292 108 184 63.0% ERX-CHINALINK Data Communications Bureau AS209 519 339 180 34.7% ASN-QWEST Qwest AS852 625 445 180 28.8% ASN852 Telus Advanced Communications AS2048 260 88 172 66.2% LANET-1 State of Louisiana AS6327 183 34 149 81.4% SHAWFIBER Shaw Fiberlink Limited AS2386 377 232 145 38.5% INS-AS AT&T Data Communications Services AS17557 314 173 141 44.9% PKTELECOM-AS-AP Pakistan Telecom AS3215 308 170 138 44.8% AS3215 France Telecom Transpac AS702 807 670 137 17.0% AS702 UUNET - Commercial IP service provider in Europe Total 17432 9710 7722 44.3% 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)lists.apnic.net routing-wg(a)ripe.net afnog(a)afnog.org

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Weekly Routing Table Report
by Routing Table Analysis 13 Dec '02

13 Dec '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 13 Dec, 2002 Analysis Summary ---------------- BGP routing table entries examined: 118450 Prefixes after maximum aggregation: 75688 Unique aggregates announced to Internet: 56710 Total ASes present in the Internet Routing Table: 14220 Origin-only ASes present in the Internet Routing Table: 12334 Origin ASes announcing only one prefix: 5584 Transit ASes present in the Internet Routing Table: 1886 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: 4 Non-routable prefixes present in the Routing Table: 0 Prefixes being announced from the IANA Reserved Address blocks: 39 Number of addresses announced to Internet: 1186235183 Equivalent to 70 /8s, 180 /16s and 131 /24s Percentage of available address space announced: 32.0 Percentage of allocated address space announced: 58.7 Percentage of available address space allocated: 54.6 Total number of prefixes smaller than registry allocations: 54423 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 19282 Total APNIC prefixes after maximum aggregation: 11466 Prefixes being announced from the APNIC address blocks: 17847 Unique aggregates announced from the APNIC address blocks: 11121 APNIC Region origin ASes present in the Internet Routing Table: 1659 APNIC Region origin ASes announcing only one prefix: 528 APNIC Region transit ASes present in the Internet Routing Table: 290 Average APNIC Region AS path length visible: 5.3 Max APNIC Region AS path length visible: 12 Number of APNIC addresses announced to Internet: 101284000 Equivalent to 6 /8s, 9 /16s and 120 /24s Percentage of available APNIC address space announced: 66.6 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 220/7 ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 73918 Total ARIN prefixes after maximum aggregation: 46897 Prefixes being announced from the ARIN address blocks: 51453 Unique aggregates announced from the ARIN address blocks: 15779 ARIN Region origin ASes present in the Internet Routing Table: 7974 ARIN Region origin ASes announcing only one prefix: 2692 ARIN Region transit ASes present in the Internet Routing Table: 753 Average ARIN Region AS path length visible: 5.2 Max ARIN Region AS path length visible: 17 Number of ARIN addresses announced to Internet: 184291824 Equivalent to 10 /8s, 252 /16s and 17 /24s Percentage of available ARIN address space announced: 68.7 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: 20226 Total RIPE prefixes after maximum aggregation: 15202 Prefixes being announced from the RIPE address blocks: 16875 Unique aggregates announced from the RIPE address blocks: 11362 RIPE Region origin ASes present in the Internet Routing Table: 4201 RIPE Region origin ASes announcing only one prefix: 2280 RIPE Region transit ASes present in the Internet Routing Table: 768 Average RIPE Region AS path length visible: 5.7 Max RIPE Region AS path length visible: 17 Number of RIPE addresses announced to Internet: 121368192 Equivalent to 7 /8s, 59 /16s and 238 /24s Percentage of available RIPE address space announced: 80.4 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, 193/8, 194/7, 212/7 and 217/8 LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 5022 Total LACNIC prefixes after maximum aggregation: 2123 Prefixes being announced from the LACNIC address blocks: 4342 Unique aggregates announced from the LACNIC address blocks: 2813 LACNIC Region origin ASes present in the Internet Routing Table: 324 LACNIC Region origin ASes announcing only one prefix: 84 LACNIC Region transit ASes present in the Internet Routing Table: 68 Average LACNIC Region AS path length visible: 5.8 Max LACNIC Region AS path length visible: 13 Number of LACNIC addresses announced to Internet: 11600128 Equivalent to 0 /8s, 177 /16s and 1 /24s Percentage of available LACNIC address space announced: 69.1 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 1153 1184 837 Telstra Pty Ltd 703 393 363 310 UUNET 2907 357 1768 335 SINET Japan 2764 341 341 310 connect.com.au pty ltd 17557 314 23 123 Pakistan Telecom 7474 306 280 204 Optus Communications Pty Ltd 4134 292 2368 93 Data Communications Bureau 4755 265 136 64 Videsh Sanchar Nigam Ltd. Aut 4814 249 79 15 China Telecom (Group) 17676 232 3602 27 XTAGE CORPORATION 4766 231 1807 154 Korea Internet Exchange for " 9583 188 33 12 Satyam Infoway Ltd., 9443 185 57 73 Primus Telecommunications 9800 140 192 38 CHINA UNICOM 9768 135 386 64 Korea Telecom 4716 129 723 123 TTnet 7657 127 26 90 The Internet Group Limited 4621 121 11 65 UNINET-TH 4739 120 56 110 Commerical Internet eXchange 4713 112 1059 101 NTT Communications Corporatio ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 3908 1803 1667 506 Supernet, Inc. 701 1697 9039 1227 UUNET Technologies, Inc. 7018 1390 7147 963 AT&T 1239 937 3144 669 Sprint 1 665 8090 438 GENUITY 852 624 1140 443 Telus Advanced Communications 7843 597 402 262 Adelphia Corp. 7046 586 861 280 UUNET Technologies, Inc. 4323 525 455 166 Time Warner Communications, I 209 524 2049 338 Qwest 690 513 75 319 Merit Network 7066 490 204 257 Virginia Polytechnic Institut 6197 456 589 92 BellSouth Network Solutions, 705 436 134 196 UUNET Technologies, Inc. 18566 419 96 5 Covad Communications 6198 418 181 197 BellSouth Network Solutions, 3561 412 2246 355 Cable & Wireless USA 4355 405 313 118 EarthLink, Inc. 3549 403 741 295 Global Crossing 15290 391 215 175 AT&T Canada IES RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 702 809 2293 672 UUNET - Commercial IP service 3301 344 1144 302 TeliaNet Sweden 3215 308 804 170 France Telecom Transpac 3320 251 1962 224 Deutsche Telekom AG 680 237 2150 234 DFN-IP service G-WiN 1257 215 417 204 SWIPnet Swedish IP Network 5515 210 783 175 Sonera Solution Autonomous Sy 719 191 306 129 LANLINK autonomous system 786 176 1873 176 The JANET IP Service 5400 162 70 98 BT Ignite European Backbone 8708 152 42 145 Romania Data Systems S.A. 3303 148 502 146 Swisscom Ltd 20858 146 17 4 This AS will be used to conne 2856 136 1301 124 BTnet UK Regional network 12302 124 18 31 MobiFon S.A. 8220 123 174 112 COLT Internet - International 3246 119 379 116 Song Networks 3269 110 752 62 TELECOM ITALIA 5511 104 193 83 France Telecom 3233 102 6 54 RNC - Romanian Natioanal R&D LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 6140 315 107 68 ImpSat USA, Inc. 8151 205 316 111 UniNet S.A. de C.V. 7303 182 28 46 Telecom Argentina Stet-France 11172 171 87 34 Servicios Alestra S.A de C.V 6503 157 207 109 AVANTEL, S.A. 13999 127 36 8 Mega Cable S.A. de C.V. 16814 107 7 12 NSS, S.A. 10620 98 6 32 TVCABLE BOGOTA 11340 91 2 36 Red Universitaria Nacional 6147 77 58 24 Telefonica Del Peru 1916 73 306 43 Fundacao de Amparo a Pesquisa 15311 73 27 37 Telefonica Empresas 6535 72 5 16 Chilesat Servicios Empresari 4270 69 18 10 Red de Interconexion Universi 8065 67 6 14 Empresas Publicas de Medellin 11992 67 7 30 Integrated Systems 7984 65 12 41 Global One Colombia 4926 60 4 50 Telintar S.A. 7927 57 5 40 Global One Venezuela 15034 57 5 32 TIBA SA Global Per AS Maximum Aggr summary ---------------------------------- ASN No of nets Net Savings Description 701 1697 470 UUNET Technologies, Inc. 7018 1390 427 AT&T 18566 419 414 Covad Communications 6197 456 364 BellSouth Network Solutions, 4323 525 359 Time Warner Communications, I 7843 597 335 Adelphia Corp. 1221 1153 316 Telstra Pty Ltd 7046 586 306 UUNET Technologies, Inc. 1580 317 302 ANOSCEUR 4355 405 287 EarthLink, Inc. 6347 353 274 SAVVIS Communications Corpora 4151 327 269 USDA 1239 937 268 Sprint 22927 289 267 TELEFONICA DE ARGENTINA 6140 315 247 ImpSat USA, Inc. 11492 275 245 Cable One 705 436 240 UUNET Technologies, Inc. 376 342 239 Reseau Interordinateurs Scien 4814 249 234 China Telecom (Group) 7066 490 233 Virginia Polytechnic Institut List of Unregistered ASNs (Global) ---------------------------------- Bad AS Designation Network Transit AS Description 64516 PRIVATE 137.164.227.0/24 2150 California State Uni 64516 PRIVATE 137.164.228.0/22 2150 California State Uni 1877 UNALLOCATED 192.108.199.0/24 1880 Stupi, house man's p 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 156.108.0.0/16 14041 Colorado State University / A 158.0.0.0/13 568 DISO-UNRRA 160.213.122.0/23 25440 Nestle European Data Center 160.213.248.0/21 25440 Nestle European Data Center 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 192.68.128.0/22 1239 Sprint 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 /8:17 /9:3 /10:8 /11:11 /12:46 /13:91 /14:238 /15:439 /16:7314 /17:1544 /18:2788 /19:7971 /20:7691 /21:5528 /22:8325 /23:9941 /24:65583 /25:142 /26:176 /27:95 /28:96 /29:70 /30:243 /31:19 /32:71 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 3908 964 1803 Supernet, Inc. 702 496 809 UUNET - Commercial IP service 701 479 1697 UUNET Technologies, Inc. 690 462 513 Merit Network 7018 457 1390 AT&T 18566 412 419 Covad Communications 7066 387 490 Virginia Polytechnic Institut 7843 374 597 Adelphia Corp. 6198 334 418 BellSouth Network Solutions, 6197 332 456 BellSouth Network Solutions, 1239 327 937 Sprint 1580 302 317 ANOSCEUR 6140 302 315 ImpSat USA, Inc. 22927 288 289 TELEFONICA DE ARGENTINA 7046 278 586 UUNET Technologies, Inc. 11492 275 275 Cable One 3215 234 308 France Telecom Transpac 11537 227 233 University Corporation for Ad 4355 224 405 EarthLink, Inc. 209 213 524 Qwest Number of /24s announced per /8 block (Global) ---------------------------------------------- 8:1 12:606 13:10 15:6 17:3 20:5 24:799 25:1 32:44 38:30 40:16 44:1 55:1 57:15 61:409 62:403 63:1924 64:1316 65:1697 66:1243 67:188 68:173 69:45 80:326 81:78 128:109 129:172 130:21 131:68 132:9 133:2 134:150 135:6 136:494 137:110 138:213 139:65 140:154 141:99 142:92 143:47 144:150 145:18 146:253 147:245 148:275 149:76 150:43 151:89 152:290 153:36 154:7 155:102 156:44 157:58 158:119 159:162 160:21 161:71 162:134 163:89 164:253 165:129 166:94 167:302 168:384 169:58 170:276 171:8 192:5422 193:2379 194:2017 195:880 196:453 198:3616 199:3070 200:2671 202:3547 203:4874 204:3097 205:2213 206:2341 207:2522 208:2578 209:2697 210:609 211:288 212:879 213:761 214:12 215:21 216:3083 217:533 218:65 219:14 220:4 End of report

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RE: Route update stats
by Christian Panigl, ACOnet/VIX/UniVie 11 Dec '02

11 Dec '02

>Date: Mon, 9 Dec 2002 14:50:18 +0100 >From: "Koepp, Karsten" <Karsten.Koepp(a)lambdanet.net> > >can anyone of you point me to statistics about the frequency of >BGP updates measured at some point in the internet? >A customer complained about av. 10 updates per second which we >consider normal, but we'd like to see values for comparison. Karsten, thats really an interesting question: ACOnet receives a full routing-table from SPRINT/AS1239 and from GEANT/AS20965. Comparing the current BGP session counters: neighbor SPRINT, uptime ~20weeks, Received 7926940 messages neighbor GEANT, uptime ~ 7weeks, Received 29597194 messages which gives a long-term average of 419 BGP update messages per minute from GEANT but only 39 BGP update messages per minute from SPRINT afaik GEANT does no BGP flap damping, SPRINT however does, according to http://www.sprint.net/policy/bgpdamp.html I don't know if damping is the only reason for the factor >10 between them, there might be other reasons as well, e.g. SPRINT backbone is Cisco based, GEANT is Juniper based and they might be using completely different IGPs and iBGP concepts. I am also suspecting some improperly behaving BGP implementations beeing around, e.g. at the VIX we are having peering neighbors who are sending superproportional more BGP updates than others with the majority of the messages beeing withdrawals for prefixes which they do not own nor announce. Btw, Lambdanet is sending us a long-term average of 2 BGP update messages per minute at the VIX. 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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RE: Route update stats
by Guy Davies 11 Dec '02

11 Dec '02

> Thanks Guy, here we go: > > 115599 prefixes from SPRINT > 117736 prefixes from GEANT > 2137 difference (~5%) > > I can't believe that those 5% are making 380 update messages > per minute !? > But of course this might be one part of the +update messages. Seems unlikely. But, if the 80/20 rule applies (80% of activity is created by 20% of the prefixes), then you'd expect 20000 prefixes to generate around that many announces/withdraws. BTW, 2.1k is about 2% of 110k ;-) This adds weight to your argument rather than diminishing it... Regards, Guy 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.

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RE: Route update stats
by Christian Panigl, ACOnet/VIX/UniVie 11 Dec '02

11 Dec '02

>Date: Wed, 11 Dec 2002 15:16:06 -0000 >From: Guy Davies <Guy.Davies(a)telindus.co.uk> > >It might be worth looking at the relative size of the "full" routing tables >you receive from SPRINT and GEANT. If it's more from GEANT, that might be >the answer. Thanks Guy, here we go: 115599 prefixes from SPRINT 117736 prefixes from GEANT 2137 difference (~5%) I can't believe that those 5% are making 380 update messages per minute !? But of course this might be one part of the +update messages. Regards CP

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RE: Route update stats
by Guy Davies 11 Dec '02

11 Dec '02

[..snip..] > Karsten, > > thats really an interesting question: > > ACOnet receives a full routing-table from SPRINT/AS1239 and from > GEANT/AS20965. Comparing the current BGP session counters: > > neighbor SPRINT, uptime ~20weeks, Received 7926940 messages > neighbor GEANT, uptime ~ 7weeks, Received 29597194 messages > > which gives a long-term average of > > 419 BGP update messages per minute from GEANT but only > 39 BGP update messages per minute from SPRINT > > afaik GEANT does no BGP flap damping, SPRINT however > does, according to > http://www.sprint.net/policy/bgpdamp.html > > I don't know if damping is the only reason for the factor > >10 between > them, there might be other reasons as well, e.g. SPRINT > backbone is > Cisco based, GEANT is Juniper based and they might be > using completely > different IGPs and iBGP concepts. It could also be due to the fact that SPRINT certainly constrains (or used to constrain) the maximum prefix length it will accept (not longer than /24 - used to be /18 I think but that was way too restrictive). Don't know about GEANT? Logically, you'd expect smaller blocks to be flapped more than larger aggregates so removing the smaller blocks entirely from what you accept/announce would reduce the number of announcements/withdrawls you make (even taking flap damping into account). It might be worth looking at the relative size of the "full" routing tables you receive from SPRINT and GEANT. If it's more from GEANT, that might be the answer. Regards, Guy --- Guy Davies Telindus IP Architect Hatchwood Place, Farnham Road, Odiham, Hants, RG29 1AB E: guy.davies(a)telindus.co.uk T: +44 (0)1256 709285 M: +44 (0)7879 434214 Yahoo!: aguyd2000(a)yahoo.com MSN: aguyd2000(a)hotmail.com AIM: aguyd2000 ICQ: 169876941 Jabber: guyd(a)myjabber.net 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.

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RIPE NCC's DNS server available in IPv6
by Daniel Diaz 09 Dec '02

09 Dec '02

Dear all, We are glad to announce that since November 29, RIPE NCC's DNS service (ns.ripe.net) is also available in IPv6. This was an action on RIPE NCC for RIPE 43 and it is now accomplished. ns.ripe.net internet address = 193.0.0.193 ns.ripe.net IPv6 address = 2001:610:240:0:193::193 Best regards. -- Daniel.Diaz Operations Manager RIPE NCC

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Route update stats
by Koepp, Karsten 09 Dec '02

09 Dec '02

Hi around, can anyone of you point me to statistics about the frequency of BGP updates measured at some point in the internet? A customer complained about av. 10 updates per second which we consider normal, but we'd like to see values for comparison. Thanks Karsten

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Re: RIPE NCC's DNS server available in IPv6
by Daniel.Diaz 09 Dec '02

09 Dec '02

Dear Carlos, et al, (Apologies for duplicates). Carlos Friacas <cfriacas(a)fccn.pt> writes: * Hello, * * I have a question about this, as pointed out by one of my colleagues here: * * As the SOA record for ripe.net., the glue record for ns.ripe.net. on * <whatever>.gtld-servers.net is 193.0.0.193, right? * Shouldnt they have also an AAAA record for ns.ripe.net on the net. zone? * Is this scheduled/possible/requestable/desirable??? * Indeed having this IN AAAA record included in the parent zone for ripe.net. would be the most desirable. So far I ignore though if .net nameservers are V6 ready or not. We definitively will look forward getting this record included in our parent zone etc... still the root-zone is not V6 ready yet, so the tree can not be completed anyway. With best regards. -- Daniel.Diaz Operations Manager RIPE NCC

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The Cidr Report
by cidr-report＠potaroo.net 06 Dec '02

06 Dec '02

This report has been generated at Fri Dec 6 21:44:40 2002 AEST. The report analyses the BGP Routing Table of an AS4637 (Reach) router and generates a report on aggregation potential within the table. Check http://www.cidr-report.org/as4637 for a current version of this report. Recent Table History Date Prefixes CIDR Agg 29-11-02 117628 84925 30-11-02 117500 84864 01-12-02 117450 84897 02-12-02 117617 84818 03-12-02 117623 84175 04-12-02 116419 84197 05-12-02 116693 84459 06-12-02 116870 84561 AS Summary 14128 Number of ASes in routing system 5562 Number of ASes announcing only one prefix 1716 Largest number of prefixes announced by an AS AS3908 : SUPERNETASBLK SuperNet, Inc. 72949248 Largest address span announced by an AS (/32s) AS568 : SUMNET-AS DISO-UNRRA Possible Bogus AS AS63000 Announced by: AS14522 EC-SASA-LACNIC SatNet S.A. 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'). --- 06Dec02 --- ASnum NetsNow NetsAggr NetGain % Gain Description Table 116820 84482 32338 27.7% All ASes AS3908 1716 975 741 43.2% SUPERNETASBLK SuperNet, Inc. AS701 1712 1227 485 28.3% ALTERNET-AS UUNET Technologies, Inc. AS18566 395 5 390 98.7% COVAD Covad Communications AS7018 1389 1034 355 25.6% ATT-INTERNET4 AT&T WorldNet Services AS4323 522 185 337 64.6% TW-COMM Time Warner Communications, Inc. AS7843 644 307 337 52.3% ADELPHIA-AS Adelphia Corp. AS6197 458 124 334 72.9% BATI-ATL BellSouth Network Solutions, Inc AS1221 1162 843 319 27.5% ASN-TELSTRA Telstra Pty Ltd AS4355 404 136 268 66.3% ERMS-EARTHLNK EARTHLINK, INC AS6347 351 83 268 76.4% DIAMOND SAVVIS Communications Corporation AS22927 289 22 267 92.4% AR-TEAR2-LACNIC TELEFONICA DE ARGENTINA AS1239 924 663 261 28.2% SPRINTLINK Sprint AS7046 584 323 261 44.7% UUNET-CUSTOMER UUNET Technologies, Inc. AS705 434 195 239 55.1% ASN-ALTERNET UUNET Technologies, Inc. AS4814 248 15 233 94.0% CHINANET-BEIJING-AP China Telecom (Group) AS1 663 439 224 33.8% GNTY-1 Genuity AS6198 417 198 219 52.5% BATI-MIA BellSouth Network Solutions, Inc AS4151 351 135 216 61.5% USDA-1 USDA AS17676 232 28 204 87.9% GIGAINFRA XTAGE CORPORATION AS852 653 464 189 28.9% ASN852 Telus Advanced Communications AS690 508 321 187 36.8% MERIT-AS-27 Merit Network Inc. AS4134 299 115 184 61.5% ERX-CHINALINK Data Communications Bureau AS6595 243 59 184 75.7% DODDSEUR DoD Education Activity Network Assistance Center AS209 520 338 182 35.0% ASN-QWEST Qwest AS2048 262 88 174 66.4% LANET-1 State of Louisiana AS6140 279 127 152 54.5% IMPSAT-USA ImpSat AS6327 183 34 149 81.4% SHAWFIBER Shaw Fiberlink Limited AS2386 374 229 145 38.8% INS-AS AT&T Data Communications Services AS17557 314 172 142 45.2% PKTELECOM-AS-AP Pakistan Telecom AS3215 309 169 140 45.3% AS3215 France Telecom Transpac Total 16839 9053 7786 46.2% 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)lists.apnic.net routing-wg(a)ripe.net afnog(a)afnog.org

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