- routing-wg - mailman.ripe.net

Minutes Routing-wg RIPE 29
by Joao Luis Silva Damas 11 May '98

11 May '98

Please find enclosed the draft minutes for the Routing Working Group meeting during RIPE 29 (Amsterdam, 28-30 Jan. 1998) ****************************************************** Draft Minutes: Routing Working Group. RIPE 29 --------------------------------------------- Chair: Joachim Schmitz (JS395-RIPE) Minutes: Joao Luis Silva Damas (JLSD1-RIPE) Attenders: 46 A. Preliminaries (Joachim Schmitz) Joachim Schmitz opened the working group, passed the attenders' list around and asked for a volunteer scribe. Joao Luis Silva Damas volunteered as scribe. The working group agreed upon the minutes of the previous meeting, and accepted the draft agenda earlier circulated on the mailing list. Review of actions RIPE 28 Action 27.R1: Carol Orange, RIPE NCC To implement cross notification in the RR with modifications as agreed at the meeting of the 27th RIPE Routing WG. Action 27.R2: Carol Orange, RIPE NCC To implement aut-num authorisation in the RR Both actions were still open. The reason for this are the project of rewriting the whole database software, and preparation for the transistion to RPSL. Due to shortage of staff these two actions could not be dealt with. Action 27.R4: Task Force (Tony Barber, Sean Doran, Daniel Karrenberg and Christian Panigl). To write up the results on route flap damping in a RIPE document The final draft of the paper was circulated on the mailing list (see below). This action was therefore closed. Action 28.R1: Carol Orange, RIPE NCC Contact other RR on the topic of distributed authorization Carol Orange met with representatives from other RR (see below). This action was therefore closed. B. Current Developments RIPE Document on Route Flap Damping (Christian Panigl) Input has been gathered from the community, and a report on bugs in the Cisco IOS has been added (regarding improper counting of flaps and early onset of damping). The final draft of the paper was circulated on the mailing list shortly before this RIPE meeting, with a last call for comments. If there are no further additions from the community this final draft will be published as a RIPE document after the meeting (now available as RIPE-178 from the RIPE ftp/web servers). Most of RIPE considerations on route flap damping have been taken into account and put in the internet draft currently being written by Curtis Villamizar, Ravi Chandra, and Ramesh Govindan. However, the scope of their draft goes beyond the RIPE document. Their paper is available from http://engr.ans.net/route-damp/ RPSL Update and Report from IETF 40 (Carol Orange) Unfortunately, there is a delay in implementation of RPSL due to unforeseable circumstances. Nonetheless, implementation will continue, just as other work around RPSL does: - There is a new version of the RAToolset at ISI with partial support for RPSL and there will soon be a new one with full RPSL support. - The RPSL draft has moved to proposed standard. - A draft from David Meyer regarding extension of RPSL was accepted. - A new routing class has been defined providing alternate ways of specifying policy. Another major topic at the IETF was security for the IRR. This arises from the fact that if IRR information is going to be used for configurations on routers, e.g. for filters. The IRR information must be trusted and a clear authorization scheme must exist. The main issues seem to be data integrity, prevention of accidental or malicious misconfiguration and prevention of improper use of adress space. In order to base the BGP filtering scheme on the data in the routing registry, the data must be properly tied to the IP assignment data maintained by the IP registries. In the RPS WG of the IETF where this was discussed, it was noted that this will be more diffucult in the ARIN and APNIC regions where the routing and IP registries are separate. With these requirementes the need arises for communication between IP registries and routing registries. The European internet community has an advantage here. C. IRR Authorization (Carol Orange, swapped in order with Gerald Winters' presentation due to problems with the overhead projector) The goal of IRR authorization is to make BGP routing in the Internet more secure which depends on proper registry data. This is meant to prevent accidental or malicious misconfigurations. Under this prerequisite it is mandatory to define a scheme which allows an ISP to decide which routes they may trust. This calls for a definition of the IRR: A proposal is: "The IRR is a place that reflects what is announced in the Internet and what is permitted to be announced." With AS numbers the path of authority is clear. IANA -> Regional registries -> ISPs This works in Europe but not elsewhere. Actually, it is possible to look for free AS numbers, just use them and register them in the IRR. The authority of AS numbers is not checked by the other routing registries. There have been several occasions when this lead to routing problems. The distribution of IP numbers works similarly. There seems to be agreement in that nonallocated IP numbers should not be routed. However, there is not yet an accpeted mechanism for providing this. One solution could be to delegate authority for a block of IP numbers in the routing registry at the time of IP allocation by creating an object for the full block that can then be subdivided by the ISP. However, this would tie IP allocation to routing entries. Joachim Schmitz noted that people should be aware that this imposes restrictions on what can be registered and is a big change from current practice. Comments on this paradigm shift are welcome. D. Using Internet Routing Announcements to Identify Incorrect IRR Data (Gerald Winters) Most of the results presented here are based upon PAIR. PAIR is the Policy Analyzer of Internet Routing (http://www.rsng.net/pair) One goal is to compare policies stored on IRRs versus real BGP information in real time. Several tools have been developed for looking at announcements - route search tool - route collation tool - AS path analyzer among others. These tools and a few others provide opportunities to identify inconsistencies, and to clean up the routing registries from obsolete or wrong data. The next question arises as to how easy it would be to do this clean up. First it must be known which information should be stored on the IRR. However, this depends on the definition of the IRR. Several have been proposed: - a repository of current internet policy - a repository also for private routing information - a place to experiment In the following, a series of examples of actual objects stored on RADB were shown: - objects with very short prefixes, e.g. 0.0.0.0/1 - private/non routable space, e.g. 10.0.0.0/24 - withdrawn routes several years old - non aggregated (but aggregatable) routes - holes in "non owned" aggregates (either reasonable or mailicious) - registration of all subblocks of an aggregate to prevent the above - extremely old objects - empty policy AS objects (39% of those on RADB) Some of this may look inadequate to some and actually be perfectly reasonable. The question is: What to do with these objects? As a first step a definition for the IRR is required. Any further action can then be based upon this definition. However, to come to this definition consensus must be found that cleaning is needed, and we must define what can be done. The IRR will probably need some power over object removal to clean up data. Yet, the IRR can not decide on its own - community approval is needed. The presentation triggered some discussion. Miguel Angel Sanz asked whether any coordination or contact exists between the different Routing Registries regarding this topic. Gerald Winters replied that RIPE, RADB, and ANS are coordinating, but MCI and CANET are not. Carol Orange added that closer coordination has started recently and is being promoted. There have been discussiones about the authorization scheme. However, we need to take into account that different registries serve different purposes: RIPE and RADB are publicly available but MCI runs a RR for their own purposes. There were remarks regarding the fact that the importance of the correctness of data in IRRs depends on them being used for router configuration and for that to happen better tools are needed. Joachim Schmitz replied that large ISPs currently tend do so and request their peers to do so as well. There were questions regarding the licensing of RADB code and Gated code. Gerald Winters and Jake Kuhon from Merit replied that the funding scheme for Merit is changing right now. Work on Gated has been resumed at Merit. The details on licensing will depend on the final scheme for Merit. Information will be available from Merit soon. Richard Almeida made remarks on the differences in registering procedures between Europe and the US and a general comment on the situation being better in Europe. Questions about followup on aggregation work from previous meeting met the reply there has been no progress recently. E. Reports from other WGs There was no current input from other WGs. F. AOB Since there was no AOB the meeting was closed. Agenda ------ R I P E 2 9 A M S T E R D A M Routing Working Group Session 28-Jan-98 Draft Agenda A. Preliminaries (Joachim Schmitz) - introduction - participants' list - volunteering of scribe - agenda bashing - RIPE 28 minutes - actions from earlier meetings B. Current Developments - RIPE document on route flap dampening (Christian Panigl) - progress on rpsl implementation (Carol Orange) C. Using Internet Routing Announcements to Identify Incorrect IRR Data (Gerald Winters) - progress on PAIR - indentifying incorrect IRR data - examples of "interesting" IRR usage - role of the IRR D. IRR Authorization (Carol Orange) Y. General Input from Other WGs Z. AOB Summary of Actions ------------------ Action 29.R1: G. Winters, C. Orange, J. Schmitz Definition of the IRR and an AUP Action 29.R2: RIPE NCC, C. Orange Implementation of notification and autnum authorization Action 29.R3: RIPE NCC< C. Orange Implementation of PGP Joao Luis Silva Damas, Joachim Schmitz, 7-May-1998

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The Cidr Report
by Tony Bates 08 May '98

08 May '98

This is an auto-generated mail on Fri May 8 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 08May98 0) General Status Table History ------------- Date Prefixes 010598 51507 020598 51483 030598 51464 040598 51619 050598 51640 060598 51724 070598 51403 080598 51559 Check http://www.employees.org/~tbates/cidr.plot.html for a plot of the table history. Possible Bogus Routes --------------------- *** Bogus 222.222.222.0 from AS701 AS Summary ---------- Number of ASes in routing system: 3529 Number of ASes announcing only one prefix: 1666 (868 cidr, 798 classful) Largest number of cidr routes: 378 announced by AS3561 Largest number of classful routes: 1105 announced by AS701 1) Gains by aggregating at the origin AS level --- 08May98 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS2493 611 376 235 38.5% iSTAR Internet, Inc. AS816 691 464 227 32.9% UUNET Canada (ASN-UUNETCA-AS4) AS4293 452 228 224 49.6% IMCI AS174 826 633 193 23.4% Performance Systems International AS701 1105 924 181 16.4% Alternet AS3602 482 309 173 35.9% Sprint Canada Inc. AS3749 207 65 142 68.6% TECNET AS8505 156 30 126 80.8% Middle East Technical University AS5668 116 46 70 60.3% Century Telephone Inc. AS2048 161 91 70 43.5% LaNet AS3221 110 41 69 62.7% EENet Autonomous System AS4755 94 27 67 71.3% Videsh Sanchar Nigam Ltd. India AS10928 108 42 66 61.1% UNKNOWN AS1221 310 247 63 20.3% AARNET-AS AS3804 200 142 58 29.0% Bell Solutions AS1239 554 499 55 9.9% SprintLink Backbone AS549 210 156 54 25.7% ONet Backbone AS7046 184 132 52 28.3% UUNET-CUSTOMER AS271 101 50 51 50.5% BCnet Backbone AS72 84 36 48 57.1% Schlumberger Information Network AS4763 123 76 47 38.2% Telstra New Zealand AS7545 101 60 41 40.6% TPG Internet Pty Ltd AS852 157 117 40 25.5% AGT Advance Communication AS684 94 55 39 41.5% Manitoba Regional Network Backbon AS4740 372 333 39 10.5% ASN-OZEMAIL (Ozemail Pty Ltd) AS762 118 80 38 32.2% WELLFLEET-AS AS4200 124 86 38 30.6% AGIS (Apex Global Information Ser AS3493 163 125 38 23.3% INTERLINK AS6392 69 32 37 53.6% MidWest Communications, Inc. AS6181 65 28 37 56.9% FUSE-NET 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

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The Cidr Report
by Tony Bates 01 May '98

01 May '98

This is an auto-generated mail on Fri May 1 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 01May98 0) General Status Table History ------------- Date Prefixes 240498 51504 250498 51831 260498 51362 270498 51498 280498 51499 290498 51512 300498 51446 010598 51507 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: 3510 Number of ASes announcing only one prefix: 1656 (861 cidr, 795 classful) Largest number of cidr routes: 371 announced by AS3561 Largest number of classful routes: 1116 announced by AS701 1) Gains by aggregating at the origin AS level --- 01May98 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS2493 638 396 242 37.9% iSTAR Internet, Inc. AS4293 442 218 224 50.7% IMCI AS816 678 459 219 32.3% UUNET Canada (ASN-UUNETCA-AS4) AS174 798 615 183 22.9% Performance Systems International AS701 1116 938 178 15.9% Alternet AS3602 482 309 173 35.9% Sprint Canada Inc. AS3749 219 64 155 70.8% TECNET AS8505 156 30 126 80.8% Middle East Technical University AS7046 256 151 105 41.0% UUNET-CUSTOMER AS5668 118 46 72 61.0% Century Telephone Inc. AS2048 162 90 72 44.4% LaNet AS3221 110 41 69 62.7% EENet Autonomous System AS10928 106 46 60 56.6% UNKNOWN AS271 111 52 59 53.2% BCnet Backbone AS4755 90 32 58 64.4% Videsh Sanchar Nigam Ltd. India AS3804 200 142 58 29.0% Bell Solutions AS1239 555 500 55 9.9% SprintLink Backbone AS549 210 156 54 25.7% ONet Backbone AS1221 275 224 51 18.5% AARNET-AS AS72 84 36 48 57.1% Schlumberger Information Network AS4763 123 76 47 38.2% Telstra New Zealand AS7545 104 58 46 44.2% TPG Internet Pty Ltd AS684 95 53 42 44.2% Manitoba Regional Network Backbon AS852 157 117 40 25.5% AGT Advance Communication AS4740 365 325 40 11.0% ASN-OZEMAIL (Ozemail Pty Ltd) AS4200 131 93 38 29.0% AGIS (Apex Global Information Ser AS3493 163 125 38 23.3% INTERLINK AS6392 69 32 37 53.6% MidWest Communications, Inc. AS803 72 36 36 50.0% SaskNet Backbone AS6335 63 27 36 57.1% NTRNET 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

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The Cidr Report
by Tony Bates 24 Apr '98

24 Apr '98

This is an auto-generated mail on Fri Apr 24 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 24Apr98 0) General Status Table History ------------- Date Prefixes 170498 51188 180498 51220 190498 51064 200498 51247 210498 51425 220498 51496 230498 51401 240498 51504 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: 3488 Number of ASes announcing only one prefix: 1659 (861 cidr, 798 classful) Largest number of cidr routes: 376 announced by AS3561 Largest number of classful routes: 1115 announced by AS701 1) Gains by aggregating at the origin AS level --- 24Apr98 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS2493 657 413 244 37.1% iSTAR Internet, Inc. AS4293 441 217 224 50.8% IMCI AS816 670 461 209 31.2% UUNET Canada (ASN-UUNETCA-AS4) AS701 1115 939 176 15.8% Alternet AS3602 469 306 163 34.8% Sprint Canada Inc. AS3749 219 64 155 70.8% TECNET AS174 750 601 149 19.9% Performance Systems International AS8505 156 30 126 80.8% Middle East Technical University AS7046 253 149 104 41.1% UUNET-CUSTOMER AS5668 119 45 74 62.2% Century Telephone Inc. AS2048 162 90 72 44.4% LaNet AS3221 110 41 69 62.7% EENet Autonomous System AS4755 97 29 68 70.1% Videsh Sanchar Nigam Ltd. India AS11003 127 59 68 53.5% UNKNOWN AS10928 104 44 60 57.7% UNKNOWN AS271 111 52 59 53.2% BCnet Backbone AS3804 200 142 58 29.0% Bell Solutions AS4313 67 14 53 79.1% DELTANET AS549 209 159 50 23.9% ONet Backbone AS1239 541 492 49 9.1% SprintLink Backbone AS72 84 36 48 57.1% Schlumberger Information Network AS1221 275 227 48 17.5% AARNET-AS AS6392 80 33 47 58.8% MidWest Communications, Inc. AS4763 123 76 47 38.2% Telstra New Zealand AS684 94 52 42 44.7% Manitoba Regional Network Backbon AS852 157 117 40 25.5% AGT Advance Communication AS4740 353 314 39 11.0% ASN-OZEMAIL (Ozemail Pty Ltd) AS3493 164 126 38 23.2% INTERLINK AS4200 129 92 37 28.7% AGIS (Apex Global Information Ser AS803 72 36 36 50.0% SaskNet Backbone 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

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The Cidr Report
by Tony Bates 17 Apr '98

17 Apr '98

This is an auto-generated mail on Fri Apr 17 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 17Apr98 0) General Status Table History ------------- Date Prefixes 100498 50729 110498 50709 120498 50690 130498 50676 140498 51036 150498 51181 160498 50874 170498 51188 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: 3462 Number of ASes announcing only one prefix: 1628 (850 cidr, 778 classful) Largest number of cidr routes: 378 announced by AS3561 Largest number of classful routes: 1088 announced by AS701 1) Gains by aggregating at the origin AS level --- 17Apr98 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS4293 438 216 222 50.7% IMCI AS2493 560 344 216 38.6% iSTAR Internet, Inc. AS816 666 454 212 31.8% UUNET Canada (ASN-UUNETCA-AS4) AS3602 468 300 168 35.9% Sprint Canada Inc. AS701 1088 924 164 15.1% Alternet AS174 786 624 162 20.6% Performance Systems International AS3749 216 71 145 67.1% TECNET AS8505 155 34 121 78.1% Middle East Technical University AS7046 234 134 100 42.7% UUNET-CUSTOMER AS5668 118 44 74 62.7% Century Telephone Inc. AS2048 162 90 72 44.4% LaNet AS11003 129 57 72 55.8% UNKNOWN AS3221 110 41 69 62.7% EENet Autonomous System AS4755 91 28 63 69.2% Videsh Sanchar Nigam Ltd. India AS271 111 52 59 53.2% BCnet Backbone AS3804 200 142 58 29.0% Bell Solutions AS10928 100 42 58 58.0% UNKNOWN AS549 209 158 51 24.4% ONet Backbone AS1239 541 491 50 9.2% SprintLink Backbone AS72 84 36 48 57.1% Schlumberger Information Network AS6392 79 32 47 59.5% MidWest Communications, Inc. AS4763 123 76 47 38.2% Telstra New Zealand AS1221 286 239 47 16.4% AARNET-AS AS4740 356 313 43 12.1% ASN-OZEMAIL (Ozemail Pty Ltd) AS1982 162 119 43 26.5% Northwest Nexus, Inc. AS852 157 117 40 25.5% AGT Advance Communication AS684 94 54 40 42.6% Manitoba Regional Network Backbon AS4200 132 94 38 28.8% AGIS (Apex Global Information Ser AS3493 164 126 38 23.2% INTERLINK AS6335 63 27 36 57.1% NTRNET 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

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The Cidr Report
by Tony Bates 10 Apr '98

10 Apr '98

This is an auto-generated mail on Fri Apr 10 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 10Apr98 0) General Status Table History ------------- Date Prefixes 030498 50479 040498 50660 050498 50519 060498 50595 070498 50748 080498 50724 090498 50529 100498 50729 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: 3448 Number of ASes announcing only one prefix: 1614 (846 cidr, 768 classful) Largest number of cidr routes: 412 announced by AS3561 Largest number of classful routes: 1036 announced by AS701 1) Gains by aggregating at the origin AS level --- 10Apr98 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS4293 437 213 224 51.3% IMCI AS2493 553 338 215 38.9% iSTAR Internet, Inc. AS816 672 461 211 31.4% UUNET Canada (ASN-UUNETCA-AS4) AS3602 467 302 165 35.3% Sprint Canada Inc. AS174 774 617 157 20.3% Performance Systems International AS701 1036 881 155 15.0% Alternet AS3749 218 63 155 71.1% TECNET AS8505 154 34 120 77.9% Middle East Technical University AS2939 186 77 109 58.6% SCAROLINA-AS AS2048 162 90 72 44.4% LaNet AS11003 126 56 70 55.6% UNKNOWN AS5668 116 47 69 59.5% Century Telephone Inc. AS3221 107 39 68 63.6% EENet Autonomous System AS271 112 53 59 52.7% BCnet Backbone AS3804 199 141 58 29.1% Bell Solutions AS10928 99 41 58 58.6% UNKNOWN AS549 209 159 50 23.9% ONet Backbone AS1239 538 488 50 9.3% SprintLink Backbone AS1221 272 223 49 18.0% AARNET-AS AS72 84 36 48 57.1% Schlumberger Information Network AS4755 85 37 48 56.5% Videsh Sanchar Nigam Ltd. India AS6392 79 32 47 59.5% MidWest Communications, Inc. AS7046 154 108 46 29.9% UUNET-CUSTOMER AS4763 122 76 46 37.7% Telstra New Zealand AS1982 161 118 43 26.7% Northwest Nexus, Inc. AS4740 351 309 42 12.0% ASN-OZEMAIL (Ozemail Pty Ltd) AS852 157 117 40 25.5% AGT Advance Communication AS684 92 52 40 43.5% Manitoba Regional Network Backbon AS4200 134 95 39 29.1% AGIS (Apex Global Information Ser AS3493 164 126 38 23.2% INTERLINK 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

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The Cidr Report
by Tony Bates 03 Apr '98

03 Apr '98

This is an auto-generated mail on Fri Apr 3 12:00:00 PST 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 03Apr98 0) General Status Table History ------------- Date Prefixes 270398 50071 280398 50139 290398 50082 300398 50063 310398 50599 010498 50557 020498 50527 030498 50479 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: 3404 Number of ASes announcing only one prefix: 1599 (840 cidr, 759 classful) Largest number of cidr routes: 418 announced by AS3561 Largest number of classful routes: 1043 announced by AS701 1) Gains by aggregating at the origin AS level --- 03Apr98 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS4293 436 211 225 51.6% IMCI AS816 666 456 210 31.5% UUNET Canada (ASN-UUNETCA-AS4) AS2493 521 339 182 34.9% iSTAR Internet, Inc. AS3602 463 299 164 35.4% Sprint Canada Inc. AS174 778 619 159 20.4% Performance Systems International AS701 1043 887 156 15.0% Alternet AS3749 219 64 155 70.8% TECNET AS5668 117 45 72 61.5% Century Telephone Inc. AS11003 128 56 72 56.2% UNKNOWN AS3221 106 38 68 64.2% EENet Autonomous System AS2048 150 87 63 42.0% LaNet AS3804 202 142 60 29.7% Bell Solutions AS10928 100 42 58 58.0% UNKNOWN AS1239 550 493 57 10.4% SprintLink Backbone AS271 109 54 55 50.5% BCnet Backbone AS549 211 160 51 24.2% ONet Backbone AS1221 270 221 49 18.1% AARNET-AS AS72 84 36 48 57.1% Schlumberger Information Network AS6392 79 32 47 59.5% MidWest Communications, Inc. AS4763 122 76 46 37.7% Telstra New Zealand AS7046 150 106 44 29.3% UUNET-CUSTOMER AS4740 355 312 43 12.1% ASN-OZEMAIL (Ozemail Pty Ltd) AS4755 82 40 42 51.2% Videsh Sanchar Nigam Ltd. India AS2711 98 56 42 42.9% SUNBELT-AS AS1982 157 115 42 26.8% Northwest Nexus, Inc. AS852 156 116 40 25.6% AGT Advance Communication AS684 91 52 39 42.9% Manitoba Regional Network Backbon AS4200 132 93 39 29.5% AGIS (Apex Global Information Ser AS3493 161 123 38 23.6% INTERLINK AS6335 63 27 36 57.1% NTRNET 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

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The Cidr Report
by Tony Bates 27 Mar '98

27 Mar '98

This is an auto-generated mail on Fri Mar 27 12:00:00 PST 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 27Mar98 0) General Status Table History ------------- Date Prefixes 200398 49893 210398 50064 220398 50031 230398 49930 240398 49998 250398 50244 260398 49981 270398 50071 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: 3371 Number of ASes announcing only one prefix: 1596 (826 cidr, 770 classful) Largest number of cidr routes: 418 announced by AS3561 Largest number of classful routes: 1039 announced by AS701 1) Gains by aggregating at the origin AS level --- 27Mar98 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS4293 437 213 224 51.3% IMCI AS2493 560 343 217 38.8% iSTAR Internet, Inc. AS816 653 448 205 31.4% UUNET Canada (ASN-UUNETCA-AS4) AS3602 465 300 165 35.5% Sprint Canada Inc. AS174 786 627 159 20.2% Performance Systems International AS3749 219 64 155 70.8% TECNET AS701 1039 885 154 14.8% Alternet AS11003 128 56 72 56.2% UNKNOWN AS5668 113 42 71 62.8% Century Telephone Inc. AS2048 160 92 68 42.5% LaNet AS3221 102 37 65 63.7% EENet Autonomous System AS3804 205 142 63 30.7% Bell Solutions AS1239 550 493 57 10.4% SprintLink Backbone AS271 110 54 56 50.9% BCnet Backbone AS10928 98 43 55 56.1% UNKNOWN AS549 211 160 51 24.2% ONet Backbone AS4755 84 34 50 59.5% Videsh Sanchar Nigam Ltd. India AS1221 272 223 49 18.0% AARNET-AS AS72 84 36 48 57.1% Schlumberger Information Network AS4763 122 76 46 37.7% Telstra New Zealand AS7046 146 102 44 30.1% UUNET-CUSTOMER AS6392 73 29 44 60.3% MidWest Communications, Inc. AS4740 355 313 42 11.8% ASN-OZEMAIL (Ozemail Pty Ltd) AS2711 98 56 42 42.9% SUNBELT-AS AS852 157 117 40 25.5% AGT Advance Communication AS6335 63 23 40 63.5% NTRNET AS3493 162 124 38 23.5% INTERLINK AS684 90 53 37 41.1% Manitoba Regional Network Backbon AS6332 83 46 37 44.6% TELNOR AS4200 127 90 37 29.1% AGIS (Apex Global Information Ser 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

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by info＠inexchange.net 25 Mar '98

25 Mar '98

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Your Web Site Re-Launch
by launch＠LAUNCHMASTER.COM 25 Mar '98

25 Mar '98

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