The Cidr Report

Tony Bates tbates at cisco.com
Fri Sep 3 19:00:04 UTC 1999


This is an auto-generated mail on Fri Sep  3 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      A summary of the last weeks changes in terms of withdrawn and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 03Sep99


0) General Status

Table History
-------------

Date	Prefixes
270899	63124
280899	62963
290899	63479
300899	63490
310899	63472
010999	63419
020999	63310
030999	63155

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:                 4055

Number of ASes announcing only one prefix:        1630 (346 cidr, 1284 classful)

Largest number of  cidr routes:                    181 announced by  AS701
Largest number of classful routes:                 835 announced by  AS701



1) Gains by aggregating at the origin AS level

 --- 03Sep99 ---
ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS99           2        1        1   50.0%   INTEL-IWARP
AS9536         2        1        1   50.0%   Sony Corporation of Hong Kong Ltd
AS9511         2        1        1   50.0%   Wilson and Horton
AS9468         2        1        1   50.0%   Timber Hill Honk Kong Ltd.
AS9447         2        1        1   50.0%   Ford Motors
AS9428         2        1        1   50.0%   The Net Effect Pty Ltd.
AS9175         2        1        1   50.0%   VHB-DE
AS9084         2        1        1   50.0%   Goldman Sachs International
AS8963         2        1        1   50.0%   INTRASOFT Autonomous System
AS8898         2        1        1   50.0%   Roche Diagnostics GmbH
AS8673         2        1        1   50.0%   BusinessOnline AG, German ISP
AS8672         2        1        1   50.0%   Orbitel Ltd. Autonomous system Nu
AS8141         2        1        1   50.0%   TBAINFORMATICA
AS7912         2        1        1   50.0%   STATEFARMINSCO
AS7267         2        1        1   50.0%   GLOBALCOMMERCE
AS6979         2        1        1   50.0%   SAP
AS6830         2        1        1   50.0%   chello broadband
AS6575         2        1        1   50.0%   Wilmington Internet Service Enter
AS6434         2        1        1   50.0%   OpNet Inc
AS6242         2        1        1   50.0%   TELEMAIL
AS6234         2        1        1   50.0%   ETAK-NET2
AS5839         2        1        1   50.0%   DDN-ASNBLK
AS5647         2        1        1   50.0%   ASN-KODAK
AS4939         2        1        1   50.0%   ASN-SOLECT
AS3346         2        1        1   50.0%   HUNGARNET-GODOLLO
AS2472         2        1        1   50.0%   FR-DOM-GUYANE
AS1725         2        1        1   50.0%   FR-RENATER-CHAMPAITRE
AS1665         2        1        1   50.0%   IBM Watson #2, Yorktown Heights, 
AS13425        2        1        1   50.0%   UNKNOWN
AS13366        3        2        1   33.3%   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




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