- routing-wg - mailman.ripe.net

The Cidr Report
by Tony Bates 07 Jul '00

07 Jul '00

This is an auto-generated mail on Fri Jul 7 12:00:00 PDT 2000 It is not checked before it leaves my workstation. However, hopefully you will find this report interesting and will take the time to look through this to see if you can improve the amount of aggregation you perform. The report is split into sections: 0) General Status List the route table history for the last week, list any possibly bogus routes seen and give some status on ASes. 1) Gains by aggregating at the origin AS level This lists the "Top 30" players who if they decided to aggregate their announced classful prefixes at the origin AS level could make a significant difference in the reduction of the current size of the Internet routing table. This calculation does not take into account the inclusion of holes when forming an aggregate so it is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes. Please note that this is only a snapshot but does give some indication of ASes participating in CIDR. Clearly, it is generally a good thing to see a large amont of withdrawls. 3) Interesting aggregates Interesting here means not an aggregate made as a set of classful routes. Thanks to xara.net for giving me access to their routing tables once a day. Please send any comments about this report directly to me. Check http://www.employees.org/~tbates/cidr-report.html for a daily update of this report. ------------------------------------------------------------------------------ CIDR REPORT for 07Jul00 0) General Status Table History ------------- Date Prefixes 300600 80928 010700 80965 020700 80894 030700 80985 040700 81051 050700 81066 060700 81438 070700 81549 Check http://www.employees.org/~tbates/cidr.plot.html for a plot of the table history. Possible Bogus Routes --------------------- *** Bogus 65.56.64.0/21 from AS2941 AS Summary ---------- Number of ASes in routing system: 7835 Number of ASes announcing only one prefix: 4407 (2427 cidr, 1980 classful) Largest number of cidr routes: 975 announced by AS701 Largest number of classful routes: 1061 announced by AS701 1) Gains by aggregating at the origin AS level --- 07Jul00 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS271 436 149 287 65.8% BCnet Backbone AS1221 626 446 180 28.8% TELSTRA-AS AS7046 535 365 170 31.8% COQUI-NET PRTC Internet AS9269 187 45 142 75.9% Hong Kong CTI AS9706 153 21 132 86.3% Pusan Metropolitan City Office of AS705 569 448 121 21.3% ALTERNET-AS AS7657 295 190 105 35.6% The Internet Group Limited AS2609 125 20 105 84.0% EUnet-TN AS9304 122 18 104 85.2% Hutchcity AS7545 154 56 98 63.6% TPG Internet Pty Ltd AS6429 211 116 95 45.0% RDC-INTERNET AS577 267 180 87 32.6% Bell Backbone AS174 556 469 87 15.6% Performance Systems International AS7496 128 43 85 66.4% Power Up AS4293 325 241 84 25.8% Internal ASN for C&W AS724 228 157 71 31.1% DLA-ASNBLOCK-AS AS3908 273 204 69 25.3% Supernet, Inc. AS1727 159 90 69 43.4% MRMS-WEST AS701 1061 996 65 6.1% Alternet AS6595 110 50 60 54.5% DODDSEUR AS5106 89 31 58 65.2% AADS-COLUMBUS AS3749 116 58 58 50.0% TECNET AS7568 81 24 57 70.4% C.S. Communications Co., Ltd. AS3602 301 244 57 18.9% Sprint Canada Inc. AS4740 328 273 55 16.8% Ozemail Pty Ltd (ASN-OZEMAIL) AS7018 541 488 53 9.8% AT&T WorldNet Service Backbone AS1785 360 311 49 13.6% NYSERNet Backbone AS209 259 211 48 18.5% Qwest Communications AS9557 61 16 45 73.8% Pakistan Telecommunication Compan AS14562 80 35 45 56.2% UNKNOWN For the rest of the previous weeks gain information please see http://www.employees.org:80/~tbates/cidr-report.html 2) Weekly Delta Please see http://www.employees.org:80/~tbates/cidr-report.html for this part of the report 3) Interesting aggregates Please see http://www.employees.org:80/~tbates/cidr-report.html for this part of the report

1 0

RIPE NCC Region Weekly Routing Report
by Routing Analysis 06 Jul '00

06 Jul '00

This is an automated weekly mailing sent to the RIPE Routing WG e-mail list describing the state of the Internet Routing Table in Europe, Middle East and North Africa. 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>. Europe, Middle East, North Africa Report 07 Jul, 2000 Analysis Summary ---------------- BGP routing table entries examined: 83516 Origin ASes present in the Internet Routing Table: 7848 Origin ASes announcing only one prefix: 2590 Transit ASes present in the Internet Routing Table: 1096 Average AS path length visible in the Internet Routing Table: 5.2 Max AS path length visible: 15 Illegal AS announcements present in the Routing Table: 6 Non-routable prefixes present in the Routing Table: 3 Prefixes being announced from the IANA Reserved Address blocks: 2 Number of addresses announced to Internet: 1167128256 Equivalent to 69 /8s, 144 /16s and 246 /24s Percentage of available address space announced: 31.5 Percentage of allocated address space announced: 62.9 Percentage of available address space allocated: 50.1 RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 13038 Prefixes being announced from the RIPE address blocks: 10432 RIPE Region origin ASes present in the Internet Routing Table: 2092 RIPE Region origin ASes announcing only one prefix: 984 RIPE Region transit ASes present in the Internet Routing Table: 401 Average RIPE Region AS path length visible: 5.9 Max RIPE Region AS path length visible: 15 Number of RIPE addresses announced to Internet: 89172550 Equivalent to 5 /8s, 80 /16s and 170 /24s Percentage of available RIPE address space announced: 75.9 RIPE AS Blocks 1877 - 1901, 2042, 2047, 2107 - 2136, 2585 - 2614 2773 - 2822, 2830 - 2879, 3154 - 3353, 5377 - 5631 6656 - 6911, 8192 - 9215, 12288 - 13311, 15360 - 16383 RIPE Address Blocks 62/8, 193/8, 194/7, 212/7 and 217/8 RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /19 equiv Description 3301 385 281 TeliaNet Sweden 1257 336 271 Swipnet AB 1270 249 390 UUNET Germany 1849 246 464 PIPEX 3320 222 250 Deutsche Telekom AG 1275 220 1091 DFN IP Service 786 181 959 JANET IP Service 719 178 145 LANLINK 5515 173 362 Sonera Finland 517 161 192 Xlink 1267 128 956 IUnet S.p.A 2609 127 4 EUnet-TN 2856 126 271 BTnet UK Regional network 3303 119 285 Swisscom 9057 111 38 Level 3 public IP n 3215 102 124 RAIN 1901 99 75 EUnet Austria 8895 92 28 Saudi Arabia AS 1290 84 195 PSINet UK Ltd. Global Per AS prefix count summary ---------------------------------- ASN No of nets /19 equiv Description 701 2040 3207 UUNET Technologies, Inc. 7018 1277 3082 AT&T 1 894 4553 BBN Planet 1221 887 979 Telstra 7046 876 500 UUNET Technologies, Inc. 705 822 2091 UUNET Technologies, Inc. 2914 770 1407 Verio, Inc. 1239 706 1674 Sprint ICM-Inria 3561 702 1643 Cable & Wireless USA 174 640 2845 PSINet Inc. 1785 523 824 Sprint ICM 271 469 411 BCnet Backbone 2764 459 117 connect.com.au pty ltd 3549 452 345 Frontier GlobalCenter 3602 443 77 Sprint Canada 1740 435 623 CERFnet 209 433 379 Qwest 3908 427 354 Supernet, Inc. 4293 397 69 Cable & Wireless USA List of Illegal AS's (Global) ----------------------------- Bad AS Designation Network Transit AS Description 64602 PRIVATE 63.236.57.0/24 209 Qwest 64601 PRIVATE 63.236.90.0/24 209 Qwest 61200 RESERVED 163.247.54.0/24 6429 RdC Internet 64512 PRIVATE 193.39.51.0/24 5462 Cable Internet Ltd 64605 PRIVATE 208.47.206.0/24 209 Qwest 65019 PRIVATE 208.185.254.128/27 6461 AboveNet Communicati Prefixes from private and non-routed address space (Global) ----------------------------------------------------------- Prefix Origin AS Description 192.168.15.4/30 2518 C&C Internet Service Mesh 192.168.15.8/30 2518 C&C Internet Service Mesh 192.168.15.208/28 2518 C&C Internet Service Mesh Advertised IANA Reserved Addresses ---------------------------------- Network Origin AS Description 39.96.40.224/30 14408 iCAIR 65.56.64.0/21 2941 Community News Service Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:23 /9:4 /10:5 /11:9 /12:26 /13:49 /14:166 /15:285 /16:6554 /17:860 /18:1732 /19:5571 /20:3341 /21:3520 /22:5303 /23:7130 /24:48045 /25:143 /26:176 /27:95 /28:73 /29:71 /30:195 /31:0 /32:140 End of report

1 0

APNIC REGION CIDR blocks - smallest allocations
by Anne Lord 06 Jul '00

06 Jul '00

Hi, In response to a request to these lists, APNIC has now compiled information about the minimum allocation sizes for the APNIC region address blocks. You can find this information at the URL below. http://www.apnic.net/db/min-alloc.html I hope this information is useful. Regards, Anne Manager, Member Services -- See you at the APNIC Meeting - Brisbane, Australia 25 - 27 October 2000 | http://www.apnic.net/meetings/ *****************************************************

1 0

Problems with RIPE210
by Philip Smith 05 Jul '00

05 Jul '00

Hi, There are some problems/errors/omissions in RIPE-210 which are causing me, and some of the ISPs trying to implement the recommendations, some problems. It seems that the choice has been made to include X.root-servers.net *and* X.gtld-servers.net, but I can find no reference to these in the description of the example configuration in S2.3. It would be good to do this so that people know what they are dampening. Also, an expansion of S1.6 would achieve this quite well. It is also worth noting that the "root networks" change from time to time, and that all ISPs should check that these network announcements are still current before implementing the recommendations. You'll be surprised how many people simply cut and paste the configuration without checking the detail. Some problems: - S1.6 refers to "probably" removing the A, D and H servers as they are on /16 prefix announcements. But A is on a /24 announcement. (Is there evidence to suggest that a /16 flaps less than a /24 - the analysis I've done in AsiaPac doesn't prove anything conclusively.) - In S2.3, B, C, D, H, K, L and M are omitted. With no explanation as to why. They are not all on /16 prefix announcements. - In S2.3, A&J network is listed twice - why? - In S2.3, if including the gtld servers is the goal, G.gtld and I.gtld are omitted. I.gtld is announced on a /24 network. The list I have been recommending to ISPs in AsiaPac for about the last year is below: ip prefix-list rootns permit 198.41.0.0/24 ! A & J ip prefix-list rootns permit 128.9.0.0/16 ! B ip prefix-list rootns permit 192.33.4.0/24 ! C ip prefix-list rootns permit 128.8.0.0/16 ! D ip prefix-list rootns permit 192.203.230.0/24 ! E ip prefix-list rootns permit 192.5.4.0/23 ! F ip prefix-list rootns permit 192.112.36.0/24 ! G ip prefix-list rootns permit 128.63.0.0/16 ! H ip prefix-list rootns permit 192.36.148.0/24 ! I ip prefix-list rootns permit 193.0.14.0/24 ! K ip prefix-list rootns permit 198.32.64.0/24 ! L ip prefix-list rootns permit 202.12.27.0/24 ! M which is basically the current list of roots and their corresponding prefixes as announced to the Internet. If the decision is to include X.gtld-servers.net, the list could be augmented as: ip prefix-list gltdns permit 198.41.3.0/24 ! A ip prefix-list gtldns permit 205.188.128.0/17 ! C ip prefix-list gtldns permit 198.17.208.0/24 ! F ip prefix-list gtldns permit 192.215.0.0/16 ! G ip prefix-list gtldns permit 216.33.64.0/19 ! H ip prefix-list gtldns permit 192.36.144.0/24 ! I ip prefix-list gtldns permit 198.41.0.0/24 ! J ip prefix-list gtldns permit 195.8.96.0/19 ! K ip prefix-list gtldns permit 210.176.0.0/16 ! M but I'd probably list them under a separate route-map section of Golden Networks. I hope the above can be incorporated in RIPE-210 so that accuracy is achieved. best wishes! philip -- -------------------------------------------------------- Philip Smith ph: +61 7 3238 8200 Consulting Engineering, Office of the CTO, Cisco Systems --------------------------------------------------------

4 8

Problem with announcing routes
by Sascha E. Pollok 03 Jul '00

03 Jul '00

Dear Colleagues, we are currently announcing several prefixes to our three upstream providers. One of our customers is willing to buy a flatrate from another upstream. That customers has a /24 assignment out of a /19 that we announce. Is it ok to announce that /24 prefix to the new upstream so that we'll have the following route-objects: route: 213.128.128.0/19 descr: IPHH-BLOCK-B origin: AS12731 notify: guardian(a)iphh.net mnt-by: AS12731-MNT route: 213.128.140.0/24 descr: IPHH-BLOCK-B origin: AS12731 notify: guardian(a)iphh.net mnt-by: AS12731-MNT Our aut-num object would look like this: aut-num: AS12731 descr: Internet Port Hamburg descr: Global AS Routing-Policy as-in: from AS1270 100 accept ANY AND NOT {0.0.0.0/0} as-in: from AS3300 100 accept ANY AND NOT {0.0.0.0/0} as-in: from AS5409 100 accept ANY AND NOT {0.0.0.0/0} as-in: from AS8852 100 accept AS-GINKO AND NOT {0.0.0.0/0} as-in: from AS13003 100 accept AS13003 AND NOT {0.0.0.0/0} as-out: to AS1270 announce AS-IPHH as-out: to AS3300 announce AS-IPHH as-out: to AS5409 announce AS-IPHH as-out: to AS8852 announce NONE as-out: to AS13003 announce AS-IPHH as-out: to ASxxxx announce {213.128.140.0/24} Would that be ok? Regards, Sascha --- Sascha E. Pollok Internet Port Hamburg Technical Staff / Network Operations Grosse Reichenstrasse 27 D-20457 Hamburg Germany Tel.ï¿½ï¿½ +49 (0)40 37 49 19-0 Faxï¿½ï¿½ï¿½ +49 (0)40 37 49 19-29 Email: sp(a)iphh.de ICQ #38955239

2 1

The Cidr Report
by Tony Bates 30 Jun '00

30 Jun '00

This is an auto-generated mail on Fri Jun 30 12:00:00 PDT 2000 It is not checked before it leaves my workstation. However, hopefully you will find this report interesting and will take the time to look through this to see if you can improve the amount of aggregation you perform. The report is split into sections: 0) General Status List the route table history for the last week, list any possibly bogus routes seen and give some status on ASes. 1) Gains by aggregating at the origin AS level This lists the "Top 30" players who if they decided to aggregate their announced classful prefixes at the origin AS level could make a significant difference in the reduction of the current size of the Internet routing table. This calculation does not take into account the inclusion of holes when forming an aggregate so it is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes. Please note that this is only a snapshot but does give some indication of ASes participating in CIDR. Clearly, it is generally a good thing to see a large amont of withdrawls. 3) Interesting aggregates Interesting here means not an aggregate made as a set of classful routes. Thanks to xara.net for giving me access to their routing tables once a day. Please send any comments about this report directly to me. Check http://www.employees.org/~tbates/cidr-report.html for a daily update of this report. ------------------------------------------------------------------------------ CIDR REPORT for 30Jun00 0) General Status Table History ------------- Date Prefixes 230600 80236 240600 80187 250600 80366 260600 80526 270600 80814 280600 80884 290600 80973 300600 80928 Check http://www.employees.org/~tbates/cidr.plot.html for a plot of the table history. Possible Bogus Routes --------------------- *** Bogus 65.56.64.0/21 from AS2941 AS Summary ---------- Number of ASes in routing system: 7777 Number of ASes announcing only one prefix: 4376 (2400 cidr, 1976 classful) Largest number of cidr routes: 964 announced by AS701 Largest number of classful routes: 1070 announced by AS701 1) Gains by aggregating at the origin AS level --- 30Jun00 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS271 436 149 287 65.8% BCnet Backbone AS1221 645 445 200 31.0% TELSTRA-AS AS7046 534 360 174 32.6% COQUI-NET PRTC Internet AS9269 183 55 128 69.9% Hong Kong CTI AS9706 152 26 126 82.9% Pusan Metropolitan City Office of AS2609 127 12 115 90.6% EUnet-TN AS9304 122 18 104 85.2% Hutchcity AS7657 293 190 103 35.2% The Internet Group Limited AS7545 153 55 98 64.1% TPG Internet Pty Ltd AS6429 210 118 92 43.8% RDC-INTERNET AS174 563 471 92 16.3% Performance Systems International AS7496 127 42 85 66.9% Power Up AS4293 328 243 85 25.9% Internal ASN for C&W AS705 343 263 80 23.3% ALTERNET-AS AS701 1070 998 72 6.7% Alternet AS577 250 178 72 28.8% Bell Backbone AS724 229 158 71 31.0% DLA-ASNBLOCK-AS AS3908 274 205 69 25.2% Supernet, Inc. AS1727 152 83 69 45.4% MRMS-WEST AS9557 95 28 67 70.5% Pakistan Telecommunication Compan AS3602 304 245 59 19.4% Sprint Canada Inc. AS6595 108 50 58 53.7% DODDSEUR AS5106 88 30 58 65.9% AADS-COLUMBUS AS7568 81 24 57 70.4% C.S. Communications Co., Ltd. AS4740 331 275 56 16.9% Ozemail Pty Ltd (ASN-OZEMAIL) AS3749 112 56 56 50.0% TECNET AS7018 545 492 53 9.7% AT&T WorldNet Service Backbone AS1785 361 312 49 13.6% NYSERNet Backbone AS209 257 209 48 18.7% Qwest Communications AS14562 80 35 45 56.2% UNKNOWN For the rest of the previous weeks gain information please see http://www.employees.org:80/~tbates/cidr-report.html 2) Weekly Delta Please see http://www.employees.org:80/~tbates/cidr-report.html for this part of the report 3) Interesting aggregates Please see http://www.employees.org:80/~tbates/cidr-report.html for this part of the report

1 0

RIPE NCC Region Weekly Routing Report
by Routing Analysis 29 Jun '00

29 Jun '00

This is an automated weekly mailing sent to the RIPE Routing WG e-mail list describing the state of the Internet Routing Table in Europe, Middle East and North Africa. 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>. Europe, Middle East, North Africa Report 30 Jun, 2000 Analysis Summary ---------------- BGP routing table entries examined: 82924 Origin ASes present in the Internet Routing Table: 7793 Origin ASes announcing only one prefix: 2549 Transit ASes present in the Internet Routing Table: 1085 Average AS path length visible in the Internet Routing Table: 5.2 Max AS path length visible: 15 Illegal AS announcements present in the Routing Table: 5 Non-routable prefixes present in the Routing Table: 0 Prefixes being announced from the IANA Reserved Address blocks: 2 Number of addresses announced to Internet: 1182034576 Equivalent to 70 /8s, 116 /16s and 106 /24s Percentage of available address space announced: 31.9 Percentage of allocated address space announced: 63.7 Percentage of available address space allocated: 50.1 RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 13030 Prefixes being announced from the RIPE address blocks: 10253 RIPE Region origin ASes present in the Internet Routing Table: 2077 RIPE Region origin ASes announcing only one prefix: 970 RIPE Region transit ASes present in the Internet Routing Table: 397 Average RIPE Region AS path length visible: 5.8 Max RIPE Region AS path length visible: 15 Number of RIPE addresses announced to Internet: 88849150 Equivalent to 5 /8s, 75 /16s and 186 /24s Percentage of available RIPE address space announced: 75.7 RIPE AS Blocks 1877 - 1901, 2042, 2047, 2107 - 2136, 2585 - 2614 2773 - 2822, 2830 - 2879, 3154 - 3353, 5377 - 5631 6656 - 6911, 8192 - 9215, 12288 - 13311, 15360 - 16383 RIPE Address Blocks 62/8, 193/8, 194/7, 212/7 and 217/8 RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /19 equiv Description 3301 385 281 TeliaNet Sweden 1257 333 267 Swipnet AB 1270 249 390 UUNET Germany 1849 248 461 PIPEX 1275 231 1131 DFN IP Service 3320 217 249 Deutsche Telekom AG 786 181 959 JANET IP Service 719 180 145 LANLINK 5515 174 362 Sonera Finland 517 161 2247 Xlink 2609 127 4 EUnet-TN 1267 126 947 IUnet S.p.A 2856 124 271 BTnet UK Regional network 3303 120 286 Swisscom 9057 110 37 Level 3 public IP n 3215 102 124 RAIN 1901 92 74 EUnet Austria 8895 92 28 Saudi Arabia AS 1290 83 195 PSINet UK Ltd. Global Per AS prefix count summary ---------------------------------- ASN No of nets /19 equiv Description 701 2040 3180 UUNET Technologies, Inc. 7018 1113 3044 AT&T 1 894 4553 BBN Planet 1221 894 979 Telstra 7046 865 492 UUNET Technologies, Inc. 2914 774 1410 Verio, Inc. 3561 704 1666 Cable & Wireless USA 1239 701 1746 Sprint ICM-Inria 174 638 2835 PSINet Inc. 705 623 2085 UUNET Technologies, Inc. 1785 524 832 Sprint ICM 271 468 411 BCnet Backbone 2764 462 117 connect.com.au pty ltd 3549 455 345 Frontier GlobalCenter 3602 450 78 Sprint Canada 209 436 379 Qwest 1740 435 623 CERFnet 3908 429 354 Supernet, Inc. 4293 404 69 Cable & Wireless USA List of Illegal AS's (Global) ----------------------------- Bad AS Designation Network Transit AS Description 64602 PRIVATE 63.236.57.0/24 209 Qwest 64601 PRIVATE 63.236.90.0/24 209 Qwest 61200 RESERVED 163.247.54.0/24 6429 RdC Internet 64512 PRIVATE 193.39.51.0/24 5462 Cable Internet Ltd 64605 PRIVATE 208.47.206.0/24 209 Qwest Advertised IANA Reserved Addresses ---------------------------------- Network Origin AS Description 39.96.40.224/30 14408 iCAIR 65.56.64.0/21 2941 Community News Service Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:24 /9:4 /10:5 /11:9 /12:26 /13:49 /14:167 /15:285 /16:6533 /17:863 /18:1708 /19:5537 /20:3330 /21:3512 /22:5292 /23:7114 /24:47649 /25:135 /26:182 /27:85 /28:75 /29:77 /30:155 /31:0 /32:108 End of report

1 0

RIPE NCC CIDR blocks - smallest allocations
by Joao Luis Silva Damas 27 Jun '00

27 Jun '00

During the RIPE 36 meeting in Budapest there was a request to publish the list of CIDR blocks allocated by the RIPE NCC and the smallest allocation issued from each of them. This is it: 62/8: /19 193/8: /29 # Contain small PI assignments 194/8: /29 # Contain small PI assignments 195/8: /29 # Contain small PI assignments 212/8: /19 213/8: /19 217/8: /20 We shall put this information permanently on our website. regards, Joao Damas Head of External Services RIPE NCC

8 11

The Cidr Report
by Tony Bates 23 Jun '00

23 Jun '00

This is an auto-generated mail on Fri Jun 23 12:00:00 PDT 2000 It is not checked before it leaves my workstation. However, hopefully you will find this report interesting and will take the time to look through this to see if you can improve the amount of aggregation you perform. The report is split into sections: 0) General Status List the route table history for the last week, list any possibly bogus routes seen and give some status on ASes. 1) Gains by aggregating at the origin AS level This lists the "Top 30" players who if they decided to aggregate their announced classful prefixes at the origin AS level could make a significant difference in the reduction of the current size of the Internet routing table. This calculation does not take into account the inclusion of holes when forming an aggregate so it is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes. Please note that this is only a snapshot but does give some indication of ASes participating in CIDR. Clearly, it is generally a good thing to see a large amont of withdrawls. 3) Interesting aggregates Interesting here means not an aggregate made as a set of classful routes. Thanks to xara.net for giving me access to their routing tables once a day. Please send any comments about this report directly to me. Check http://www.employees.org/~tbates/cidr-report.html for a daily update of this report. ------------------------------------------------------------------------------ CIDR REPORT for 23Jun00 0) General Status Table History ------------- Date Prefixes 160600 80091 170600 79759 180600 80139 190600 79957 200600 79704 210600 80023 220600 80240 230600 80236 Check http://www.employees.org/~tbates/cidr.plot.html for a plot of the table history. Possible Bogus Routes --------------------- *** Bogus 65.56.64.0/21 from AS2941 AS Summary ---------- Number of ASes in routing system: 7723 Number of ASes announcing only one prefix: 4350 (2384 cidr, 1966 classful) Largest number of cidr routes: 939 announced by AS701 Largest number of classful routes: 1047 announced by AS701 1) Gains by aggregating at the origin AS level --- 23Jun00 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS271 439 151 288 65.6% BCnet Backbone AS7046 534 360 174 32.6% COQUI-NET PRTC Internet AS1221 583 411 172 29.5% TELSTRA-AS AS9269 192 50 142 74.0% Hong Kong CTI AS9706 154 21 133 86.4% Pusan Metropolitan City Office of AS2609 127 12 115 90.6% EUnet-TN AS7657 273 170 103 37.7% The Internet Group Limited AS9304 121 22 99 81.8% Hutchcity AS7545 167 68 99 59.3% TPG Internet Pty Ltd AS174 568 476 92 16.2% Performance Systems International AS6429 208 118 90 43.3% RDC-INTERNET AS7496 127 42 85 66.9% Power Up AS4293 326 241 85 26.1% Internal ASN for C&W AS705 340 260 80 23.5% ALTERNET-AS AS577 248 176 72 29.0% Bell Backbone AS724 229 158 71 31.0% DLA-ASNBLOCK-AS AS9557 97 29 68 70.1% Pakistan Telecommunication Compan AS701 1047 981 66 6.3% Alternet AS1727 148 82 66 44.6% MRMS-WEST AS3602 305 245 60 19.7% Sprint Canada Inc. AS3749 118 59 59 50.0% TECNET AS5106 87 29 58 66.7% AADS-COLUMBUS AS6595 106 49 57 53.8% DODDSEUR AS4740 329 273 56 17.0% Ozemail Pty Ltd (ASN-OZEMAIL) AS7018 541 487 54 10.0% AT&T WorldNet Service Backbone AS7568 70 17 53 75.7% C.S. Communications Co., Ltd. AS1785 363 314 49 13.5% NYSERNet Backbone AS209 264 216 48 18.2% Qwest Communications AS1 616 572 44 7.1% GTE Internetworking AS6499 96 55 41 42.7% Brooks Fiber Properties, Inc. For the rest of the previous weeks gain information please see http://www.employees.org:80/~tbates/cidr-report.html 2) Weekly Delta Please see http://www.employees.org:80/~tbates/cidr-report.html for this part of the report 3) Interesting aggregates Please see http://www.employees.org:80/~tbates/cidr-report.html for this part of the report

1 0

RIPE NCC Region Weekly Routing Report
by Routing Analysis 22 Jun '00

22 Jun '00

This is an automated weekly mailing sent to the RIPE Routing WG e-mail list describing the state of the Internet Routing Table in Europe, Middle East and North Africa. 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>. Europe, Middle East, North Africa Report 23 Jun, 2000 Analysis Summary ---------------- BGP routing table entries examined: 81823 Origin ASes present in the Internet Routing Table: 7738 Origin ASes announcing only one prefix: 2537 Transit ASes present in the Internet Routing Table: 1082 Average AS path length visible in the Internet Routing Table: 5.2 Max AS path length visible: 16 Illegal AS announcements present in the Routing Table: 6 Non-routable prefixes present in the Routing Table: 0 Prefixes being announced from the IANA Reserved Address blocks: 2 Number of addresses announced to Internet: 1129807739 Equivalent to 67 /8s, 87 /16s and 127 /24s Percentage of available address space announced: 30.5 Percentage of allocated address space announced: 60.9 Percentage of available address space allocated: 50.1 RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 12992 Prefixes being announced from the RIPE address blocks: 10199 RIPE Region origin ASes present in the Internet Routing Table: 2063 RIPE Region origin ASes announcing only one prefix: 961 RIPE Region transit ASes present in the Internet Routing Table: 403 Average RIPE Region AS path length visible: 5.8 Max RIPE Region AS path length visible: 15 Number of RIPE addresses announced to Internet: 71687629 Equivalent to 4 /8s, 69 /16s and 221 /24s Percentage of available RIPE address space announced: 61.0 RIPE AS Blocks 1877 - 1901, 2042, 2047, 2107 - 2136, 2585 - 2614 2773 - 2822, 2830 - 2879, 3154 - 3353, 5377 - 5631 6656 - 6911, 8192 - 9215, 12288 - 13311, 15360 - 16383 RIPE Address Blocks 62/8, 193/8, 194/7, 212/7 and 217/8 RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /19 equiv Description 3301 385 281 TeliaNet Sweden 1257 330 267 Swipnet AB 1849 247 468 PIPEX 1270 246 389 UUNET Germany 1275 233 1131 DFN IP Service 786 181 959 JANET IP Service 719 179 145 LANLINK 5515 174 362 Sonera Finland 517 160 202 Xlink 3320 152 244 Deutsche Telekom AG 2856 133 271 BTnet UK Regional network 2609 127 4 EUnet-TN 1267 126 947 IUnet S.p.A 3303 122 287 Swisscom 9057 106 35 Level 3 public IP n 3352 104 161 Ibernet, Internet A 3215 99 124 RAIN 1901 92 74 EUnet Austria 8895 89 28 Saudi Arabia AS Global Per AS prefix count summary ---------------------------------- ASN No of nets /19 equiv Description 701 1983 3167 UUNET Technologies, Inc. 7018 1081 3040 AT&T 1 892 4545 BBN Planet 7046 848 489 UUNET Technologies, Inc. 1221 833 977 Telstra 2914 775 1413 Verio, Inc. 1239 749 1701 Sprint ICM-Inria 3561 712 1603 Cable & Wireless USA 174 635 2835 PSINet Inc. 705 594 36 UUNET Technologies, Inc. 1785 526 832 Sprint ICM 271 471 411 BCnet Backbone 2764 454 117 connect.com.au pty ltd 3549 453 345 Frontier GlobalCenter 3602 451 78 Sprint Canada 209 447 389 Qwest 1740 435 623 CERFnet 4293 404 69 Cable & Wireless USA 4740 393 84 Ozemail List of Illegal AS's (Global) ----------------------------- Bad AS Designation Network Transit AS Description 64602 PRIVATE 63.236.57.0/24 209 Qwest 64601 PRIVATE 63.236.90.0/24 209 Qwest 64512 PRIVATE 193.39.51.0/24 5462 Cable Internet Ltd 64513 PRIVATE 200.12.17.0/24 6471 ENTEL CHILE S.A. 64605 PRIVATE 208.47.206.0/24 209 Qwest 65014 PRIVATE 208.185.113.0/24 6461 AboveNet Communicati Advertised IANA Reserved Addresses ---------------------------------- Network Origin AS Description 39.96.40.224/30 14408 iCAIR 65.56.64.0/21 2941 Community News Service Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:21 /9:4 /10:5 /11:9 /12:26 /13:50 /14:168 /15:280 /16:6527 /17:857 /18:1703 /19:5443 /20:3277 /21:3469 /22:5222 /23:7043 /24:46986 /25:130 /26:180 /27:74 /28:57 /29:69 /30:140 /31:0 /32:83 End of report

1 0