The Cidr Report
Tony Bates
tbates at cisco.com
Fri Jan 30 20:25:52 UTC 1998
As you can see things are startng to move up recently. I'd suggest
folks take a look at the "Interesting Aggregates" section on the web
page as it appears there's been a large influx of routes
here. Particularly AS719 who look like they may have a config error
with many many /28s showing up. They aren't the only ones as there
seems to be a lot of potential savings to be made here just by
eye-balling the aggregates.
Thanks,
--Tony
Tony Bates <tbates at cisco.com> writes:
*
* This is an auto-generated mail on Fri Jan 30 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* A summary of the last weeks changes in terms of withdrawn and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 30Jan98
*
*
* 0) General Status
*
* Table History
* -------------
*
* Date Prefixes
* 230198 48658
* 240198 48671
* 250198 48612
* 260198 49037
* 270198 49125
* 280198 49117
* 290198 50396
* 300198 50242
*
* Check http://www.employees.org/~tbates/cidr.plot.html for a plot
* of the table history.
*
*
* Possible Bogus Routes
* ---------------------
*
* *** Bogus 95.9.43.0/24 from AS2878
* *** Bogus 212.192.0.0/16 from AS5568
* *** Bogus 212.255.0.0/16 from AS2871
*
* AS Summary
* ----------
*
* Number of ASes in routing system: 3169
*
* Number of ASes announcing only one prefix: 1477 (766 cidr, 711 class
* ful)
*
* Largest number of cidr routes: 1103 announced by AS719
* Largest number of classful routes: 1022 announced by AS701
*
*
*
* 1) Gains by aggregating at the origin AS level
*
* --- 30Jan98 ---
* ASnum NetsNow NetsCIDR NetGain % Gain Description
*
* AS2493 726 386 340 46.8% iSTAR Internet, Inc.
* AS6235 495 252 243 49.1% Intermedia Communications, Inc
* .
* AS4293 424 215 209 49.3% IMCI
* AS174 856 659 197 23.0% Performance Systems Internatio
* nal
* AS816 598 417 181 30.3% UUNET Canada (ASN-UUNETCA-AS4)
* AS3602 456 304 152 33.3% Sprint Canada Inc.
* AS3749 200 59 141 70.5% TECNET
* AS701 1022 909 113 11.1% Alternet
* AS1785 456 371 85 18.6% NYSERNet Backbone
* AS3751 123 47 76 61.8% SNET-AS
* AS2048 165 93 72 43.6% LaNet
* AS5668 107 40 67 62.6% Century Telephone Inc.
* AS1239 602 539 63 10.5% SprintLink Backbone
* AS3804 203 141 62 30.5% Bell Solutions
* AS1 842 784 58 6.9% BBNPLANET
* AS271 111 56 55 49.5% BCnet Backbone
* AS3464 119 67 52 43.7% Alabama Research and Education
* Ne
* AS719 519 468 51 9.8% LANLINK autonomous system
* AS549 210 160 50 23.8% ONet Backbone
* AS7545 115 67 48 41.7% TPG Internet Pty Ltd
* AS72 84 36 48 57.1% Schlumberger Information Netwo
* rk
* AS4763 128 80 48 37.5% Telstra New Zealand
* AS1221 263 218 45 17.1% AARNET-AS
* AS7046 123 81 42 34.1% UUNET-CUSTOMER
* AS2711 97 55 42 43.3% SUNBELT-AS
* AS684 85 44 41 48.2% Manitoba Regional Network Back
* bon
* AS3561 914 873 41 4.5% MCI
* AS852 155 116 39 25.2% AGT Advance Communication
* AS6335 62 24 38 61.3% NTRNET
* AS1691 162 124 38 23.5% BCTEL
*
*
* 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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