August 1998 - routing-wg - mailman.ripe.net

The Cidr Report
by Tony Bates 28 Aug '98

28 Aug '98

This is an auto-generated mail on Fri Aug 28 12:00:00 PDT 1998 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is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes.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 28Aug98 0) General Status Table History ------------- Date Prefixes 210898 52842 220898 52964 230898 52773 240898 53047 250898 53127 260898 53242 270898 53089 280898 53151 Check http://www.employees.org/~tbates/cidr.plot.html for a plot of the table history. Possible Bogus Routes --------------------- AS Summary ---------- Number of ASes in routing system: 3922 Number of ASes announcing only one prefix: 1901 (987 cidr, 914 classful) Largest number of cidr routes: 346 announced by AS3561 Largest number of classful routes: 1175 announced by AS701 1) Gains by aggregating at the origin AS level --- 28Aug98 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS3602 552 320 232 42.0% Sprint Canada Inc. AS701 1175 949 226 19.2% Alternet AS271 351 153 198 56.4% BCnet Backbone AS4293 444 258 186 41.9% IMCI AS2493 384 227 157 40.9% iSTAR Internet, Inc. AS3749 223 67 156 70.0% TECNET AS174 701 576 125 17.8% Performance Systems International AS4200 193 99 94 48.7% AGIS (Apex Global Information Ser AS5668 131 42 89 67.9% Century Telephone Inc. AS2685 242 161 81 33.5% IBM Global Network - US AS4755 124 47 77 62.1% Videsh Sanchar Nigam Ltd. India AS4740 421 346 75 17.8% Ozemail Pty Ltd (ASN-OZEMAIL) AS3221 112 42 70 62.5% EENet Autonomous System AS7046 234 168 66 28.2% UUNET-CUSTOMER AS3493 242 176 66 27.3% INTERLINK AS3804 215 157 58 27.0% Bell Solutions AS3403 182 127 55 30.2% TIAC AS10928 101 46 55 54.5% UNKNOWN AS549 205 151 54 26.3% ONet Backbone AS8517 124 72 52 41.9% ULAKNET-ASN AS719 464 415 49 10.6% LANLINK autonomous system AS6335 69 20 49 71.0% NTRNET AS72 87 39 48 55.2% Schlumberger Information Network AS1239 551 503 48 8.7% SprintLink Backbone AS803 78 34 44 56.4% SaskNet Backbone AS4539 68 27 41 60.3% NETROPOLIS AS852 158 118 40 25.3% AGT Advance Communication AS6181 66 26 40 60.6% FUSE-NET AS7122 119 80 39 32.8% MTS ADVANCED Network Policy AS4614 68 32 36 52.9% Asiaonline Hong Kong 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

The Cidr Report
by Tony Bates 21 Aug '98

21 Aug '98

This is an auto-generated mail on Fri Aug 21 12:00:02 PDT 1998 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 21Aug98 0) General Status Table History ------------- Date Prefixes 130898 52878 150898 52681 160898 52695 170898 52882 180898 54822 190898 52846 200898 52926 210898 52842 Check http://www.employees.org/~tbates/cidr.plot.html for a plot of the table history. Possible Bogus Routes --------------------- AS Summary ---------- Number of ASes in routing system: 3903 Number of ASes announcing only one prefix: 1880 (974 cidr, 906 classful) Largest number of cidr routes: 351 announced by AS3561 Largest number of classful routes: 1189 announced by AS701 1) Gains by aggregating at the origin AS level --- 21Aug98 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS701 1189 955 234 19.7% Alternet AS3602 552 321 231 41.8% Sprint Canada Inc. AS271 337 146 191 56.7% BCnet Backbone AS4293 435 248 187 43.0% IMCI AS2493 387 229 158 40.8% iSTAR Internet, Inc. AS3749 224 67 157 70.1% TECNET AS174 717 583 134 18.7% Performance Systems International AS4200 195 100 95 48.7% AGIS (Apex Global Information Ser AS5668 130 44 86 66.2% Century Telephone Inc. AS2685 240 157 83 34.6% IBM Global Network - US AS4755 121 46 75 62.0% Videsh Sanchar Nigam Ltd. India AS4740 408 337 71 17.4% Ozemail Pty Ltd (ASN-OZEMAIL) AS3221 112 42 70 62.5% EENet Autonomous System AS7046 228 164 64 28.1% UUNET-CUSTOMER AS3804 214 156 58 27.1% Bell Solutions AS549 199 145 54 27.1% ONet Backbone AS3403 181 127 54 29.8% TIAC AS8517 124 72 52 41.9% ULAKNET-ASN AS10928 100 48 52 52.0% UNKNOWN AS719 462 413 49 10.6% LANLINK autonomous system AS6335 69 20 49 71.0% NTRNET AS72 87 39 48 55.2% Schlumberger Information Network AS1239 527 479 48 9.1% SprintLink Backbone AS4539 71 24 47 66.2% NETROPOLIS AS803 78 34 44 56.4% SaskNet Backbone AS1785 301 258 43 14.3% NYSERNet Backbone AS852 157 117 40 25.5% AGT Advance Communication AS6181 66 26 40 60.6% FUSE-NET AS7122 120 82 38 31.7% MTS ADVANCED Network Policy AS226 108 72 36 33.3% USC/Information Sciences Institut 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

Re: The Cidr Report
by Sean M. Doran 19 Aug '98

19 Aug '98

| > B/ When we can easily do: | > | > "router bgp N | > proxy-aggregate route-map Lazy-Types | | I may be misunderstanding, but does this (proposed) config statement | automaticly suppress (aggregate) any prefixes that are exactly the | same as another prefix except in the length? For example given | | 128.8.0.0/16 | 128.8.0.0/24 | 128.8.1.0/24 | | the last two would not be propogated? That would be cool! Right, essentially. This is particularly easy if all the attributes are the same, notably the AS_Path. In IOS there is already a pretty good set of tools to choose what one proxy-aggregates -- and how -- that were developed several years ago; a tool to choose when to apply a set of these would also be useful. One policy that I think would be useful would be: "Does the origin AS announce more than N prefixes? If so, aggregate/drop more specifics as follows..." Sean.

1 0

Re: The Cidr Report
by Sean M. Doran 18 Aug '98

18 Aug '98

Tli asked: | Exercise for the reader: If prefixes of length F and longer are filtered, | and a domain has a prefix of length N, how many prefixes can they propagate | into the backbone? How many before people start proxy aggregating them? A/ (2 ** F) - 1. [assuming nobody imposes exact-match prefix filters] B/ When we can easily do: "router bgp N proxy-aggregate route-map Lazy-Types ! exceptions route-map Lazy-Types deny 10 match as-path 100 ! the rule route-map Lazy-Types permit 20 match originated-prefix-count 16" then the number 16 strikes me as a starting point, although I probably want to re-read Dennis's comments from a few years ago. Do I pass? Sean.

2 1

Re: The Cidr Report
by Tony Li 17 Aug '98

17 Aug '98

> > | AS762 118 81 37 31.4% WELLFLEET-AS > > Oddly enough, they are announcing the aggregate *and* the specifics: > > > brd1>sho ip bgp reg _762_ > *> 192.32.0.0/16 207.106.96.5 0 4969 6461 1673 > *> 192.32.2.0 207.106.96.5 0 4969 6461 1673 > *> 192.32.3.0 207.106.96.5 0 4969 6461 1673 > *> 192.32.4.0 207.106.96.5 0 4969 6461 1673 > *> 192.32.6.0 207.106.96.5 0 4969 6461 1673 If one were paranoid, one might imagine that they are doing so intentionally to see how many Cisco routers they can tank through prefix overload. The problem with this is that a) they aren't also announcing the /17's, /18's, ... /25's and b) overloading a Cisco seems to mean that someone buys a bigger Cisco, thereby enhancing Cisco's revenue stream. One is then left with the theory that they are advertising more specifics for optimality, but haven't discovered communities yet. Exercise for the reader: If prefixes of length F and longer are filtered, and a domain has a prefix of length N, how many prefixes can they propagate into the backbone? How many before people start proxy aggregating them? Tony

1 0

Re: The Cidr Report
by Sean M. Doran 17 Aug '98

17 Aug '98

| 1) Gains by aggregating at the origin AS level | | --- 13Aug98 --- | ASnum NetsNow NetsCIDR NetGain % Gain Description | | AS3602 554 322 232 41.9% Sprint Canada Inc. | AS701 1133 933 200 17.7% Alternet | AS4293 442 255 187 42.3% IMCI | AS174 719 584 135 18.8% Performance Systems International | AS4200 192 100 92 47.9% AGIS (Apex Global Information Ser | AS2685 238 153 85 35.7% IBM Global Network - US | AS7046 229 163 66 28.8% UUNET-CUSTOMER | AS1239 535 487 48 9.0% SprintLink Backbone Sigh, bad trend. The big guys don't seem to care about aggregation any more. ob. NANOG: It's a *PLOT* to *CRUSH* the small providers, who are reliant on small and stable routing tables! Call the FTC!!!!!!! Funniest part: | AS762 118 81 37 31.4% WELLFLEET-AS Boy, *THEY* don't get it, that's for sure. Or maybe they want to be the ones to *SUPPLY THE BIGGER ROUTERS* to the poor small ISPs who will have to upgrade!! It's a PLOT! Sean.

2 1

IRRd source code release
by Gerald Andrew Winters 17 Aug '98

17 Aug '98

For those who are interested we are announcing our first IRRd source code release which can be found at the following location: http://www.merit.edu/radb/irrd We will be updating the source code periodically with bug fixes, feature enhancements, etc... Each new IRRd release will be tagged with the version number to distinguish it from prior releases. The current code release is version 1.0. We wish to thank those people who have already begun to test IRRd and we continue to solicit users who feel they might be interested in the IRRd software package. -- IRRd Development Team <irrd-support(a)merit.edu>

1 0

The Cidr Report
by Tony Bates 14 Aug '98

14 Aug '98

This is an auto-generated mail on Fri Aug 14 12:00:01 PDT 1998 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 14Aug98 0) General Status Table History ------------- Date Prefixes 060898 52871 070898 52903 080898 52795 090898 52792 100898 52923 110898 52706 120898 52799 130898 52878 Check http://www.employees.org/~tbates/cidr.plot.html for a plot of the table history. Possible Bogus Routes --------------------- AS Summary ---------- 1) Gains by aggregating at the origin AS level --- 13Aug98 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS3602 554 322 232 41.9% Sprint Canada Inc. AS701 1133 933 200 17.7% Alternet AS271 336 145 191 56.8% BCnet Backbone AS4293 442 255 187 42.3% IMCI AS2493 391 231 160 40.9% iSTAR Internet, Inc. AS3749 207 69 138 66.7% TECNET AS174 719 584 135 18.8% Performance Systems International AS4200 192 100 92 47.9% AGIS (Apex Global Information Ser AS2685 238 153 85 35.7% IBM Global Network - US AS5668 130 46 84 64.6% Century Telephone Inc. AS4755 121 43 78 64.5% Videsh Sanchar Nigam Ltd. India AS4740 418 343 75 17.9% Ozemail Pty Ltd (ASN-OZEMAIL) AS3221 112 42 70 62.5% EENet Autonomous System AS7046 229 163 66 28.8% UUNET-CUSTOMER AS3804 214 156 58 27.1% Bell Solutions AS3403 181 127 54 29.8% TIAC AS8517 123 71 52 42.3% ULAKNET-ASN AS549 204 153 51 25.0% ONet Backbone AS6335 69 20 49 71.0% NTRNET AS72 87 39 48 55.2% Schlumberger Information Network AS719 460 412 48 10.4% LANLINK autonomous system AS1239 535 487 48 9.0% SprintLink Backbone AS10928 95 49 46 48.4% UNKNOWN AS1785 300 256 44 14.7% NYSERNet Backbone AS4539 71 28 43 60.6% NETROPOLIS AS852 157 117 40 25.5% AGT Advance Communication AS6181 66 26 40 60.6% FUSE-NET AS7122 120 82 38 31.7% MTS ADVANCED Network Policy AS762 118 81 37 31.4% WELLFLEET-AS AS10459 47 10 37 78.7% WANSASN 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

Re: The Cidr Report
by Sean M. Doran 09 Aug '98

09 Aug '98

Tony Bates <tbates(a)cisco.com> writes: [also found at http://www.employees.org/~tbates/ in the "Daily Report" section. Also very useful is the Lookup things in report by AS button] > 1) Gains by aggregating at the origin AS level I don't suppose there is anyone who knows people at these networks (and in particular Sprint Canada, Alternet, IMCI, iSTAR (also PSI, I guess), or IBM) and would be willing to contact them and say, "hey, you could and should do better aggregation"? You might want to look to see if any of the smaller networks are downstream from you. I did, and do. Sean. > ASnum NetsNow NetsCIDR NetGain % Gain Description > > AS3602 525 313 212 40.4% Sprint Canada Inc. > AS701 1137 934 203 17.9% Alternet > AS271 344 144 200 58.1% BCnet Backbone > AS4293 469 273 196 41.8% IMCI > AS2493 432 254 178 41.2% iSTAR Internet, Inc. > AS3749 223 66 157 70.4% TECNET > AS174 723 586 137 18.9% Performance Systems International > AS2685 267 162 105 39.3% IBM Global Network - US > AS5668 134 50 84 62.7% Century Telephone Inc. > AS3221 112 42 70 62.5% RIPE-ASNBLOCK4 > AS4969 86 20 66 76.7% Net Access > AS3804 220 155 65 29.5% Bell Solutions > AS4755 114 50 64 56.1% Videsh Sanchar Nigam Ltd. India > AS7046 228 165 63 27.6% UUNET-CUSTOMER > AS4740 393 336 57 14.5% ASN-OZEMAIL (Ozemail Pty Ltd) > AS10928 101 46 55 54.5% UNKNOWN > AS3403 180 126 54 30.0% TIAC > AS8517 122 72 50 41.0% UNKNOWN > AS6335 68 19 49 72.1% NTRNET > AS549 202 153 49 24.3% ONet Backbone > AS72 85 37 48 56.5% Schlumberger Information Network > AS1239 539 492 47 8.7% SprintLink Backbone > AS719 452 406 46 10.2% LANLINK-AS > AS4539 71 26 45 63.4% NETROPOLIS > AS4200 144 99 45 31.2% AGIS (Apex Global Information Ser > AS852 157 116 41 26.1% AGT Advance Communication > AS1785 293 252 41 14.0% NYSERNet Backbone > AS10459 48 7 41 85.4% WANSASN > AS10921 57 19 38 66.7% KIHNETWORK > AS762 117 80 37 31.6% WELLFLEET-AS

1 0

Announce: IRRd-1.0 Beta Release
by Gerald Winters 07 Aug '98

07 Aug '98

IRRd-1.0 Beta Release --------------------- Merit Network is pleased to announce the 1.0 Beta release of the Internet Routing Registry Daemon (IRRd): http://www.merit.edu/radb/ IRRd is designed as a stand-alone routing registry server. IRRd handles RIPE-181 and RPSL whois and RAToolSet queries, as well as database management tasks, including mirroring and object submission. Future versions will support object authentication and notification. The IRRd server features a Cisco Systems-like management and configuration interface. The IRRd architecture was designed to address performance problems with the original RAWhoisd and RADB databases. The current IRRd version supports router configurations up to 600% faster than previously. The IRRd server also supports indexing to disk and memory, handles both the RIPE-181 and RPSL databases, determines database syntax dynamically, and indexes the entire IRR in about a minute. Although this is a beta release, the software is currently in production use as the main RABD (whois.ra.net) server. The current beta release only includes binaries. A complete source code release is planned at the end of the beta trial (anticipated mid September 1998). IRRd is freely available and may be redistributed so long as the University of Michigan copyright is preserved. Development of the RPSL portions of IRRd were supported by the National Science Foundation (NCR-9321060). All other sections were supported by Merit Network, Inc. The ongoing IRRd efforts include significant efforts by a number of Beta testers, including Kevin Oberman (ESnet), Mark Prior (connect.com.au pty ltd), John Heasley (Verio), George Matey (Bay Networks), WeeSan Lee (USC/ISI), and Pierre Thibaudeau (Teleglobe). Many thanks for your suggestions and support! A mailing list, irrd-discuss(a)merit.edu, has been created for IRRd users to share experiences and advice. Subscribe by sending mail to irrd-discuss-request(a)merit.edu. -- IRRd Development Team <irrd-support(a)merit.edu> Gerald Winters Craig Labovitz Tom Spindler Jake Khuon Susan R. Harris

1 0