The Cidr Report
Tony Bates
tbates at cisco.com
Fri Jun 4 19:00:02 UTC 1999
This is an auto-generated mail on Fri Jun 4 12:00:00 PDT 1999
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A summary of the last weeks changes in terms of withdrawn and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 04Jun99
0) General Status
Table History
-------------
Date Prefixes
280599 60794
290599 60486
300599 60423
310599 60546
010699 60651
020699 60740
030699 61574
040699 60877
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: 5052
Number of ASes announcing only one prefix: 2600 (1423 cidr, 1177 classful)
Largest number of cidr routes: 400 announced by AS701
Largest number of classful routes: 1230 announced by AS209
1) Gains by aggregating at the origin AS level
--- 04Jun99 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS209 1230 577 653 53.1% Qwest Communications
AS271 349 144 205 58.7% BCnet Backbone
AS4293 256 151 105 41.0% IMCI
AS577 276 183 93 33.7% Bell Canada Backbone
AS174 582 491 91 15.6% Performance Systems International
AS4200 175 99 76 43.4% AGIS (Apex Global Information Ser
AS3749 137 63 74 54.0% TECNET
AS7046 304 231 73 24.0% UUNET-CUSTOMER
AS1267 94 24 70 74.5% IUNET-AS
AS7496 99 33 66 66.7% Power Up
AS10928 118 52 66 55.9% UNKNOWN
AS7545 115 50 65 56.5% TPG Internet Pty Ltd
AS7122 139 78 61 43.9% MTS ADVANCED Network Policy
AS1221 452 392 60 13.3% TELSTRA-AS
AS4755 139 80 59 42.4% Videsh Sanchar Nigam Ltd. India
AS1239 543 484 59 10.9% SprintLink Backbone
AS9269 68 10 58 85.3% Hong Kong CTI
AS7657 181 124 57 31.5% The Internet Group Limited
AS72 95 39 56 58.9% Schlumberger Information Network
AS4740 323 267 56 17.3% Ozemail Pty Ltd (ASN-OZEMAIL)
AS2493 174 121 53 30.5% iSTAR Internet, Inc.
AS719 465 413 52 11.2% LANLINK autonomous system
AS3737 161 111 50 31.1% PenTeleData Inc. (ASN-PTD)
AS803 73 37 36 49.3% SaskNet Backbone
AS1 490 455 35 7.1% BBNPLANET
AS6944 34 2 32 94.1% RapidSite, Inc.
AS6172 154 122 32 20.8% HOME-NET-1
AS1785 246 214 32 13.0% NYSERNet Backbone
AS549 164 133 31 18.9% ONet Backbone
AS4307 32 1 31 96.9% SVINET-1
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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