The Cidr Report

[Tony Bates <tbates () cisco com>]

This is an auto-generated mail on Fri Aug 25 12:00:00 PDT 2000
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      A summary of the last weeks changes in terms of withdrawn and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 25Aug00


0) General Status

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

Date    Prefixes
180800  85012
190800  84653
200800  84576
210800  84539
220800  86440
230800  85617
240800  85297
250800  85144

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:                 6240

Number of ASes announcing only one prefix:        3082 (1039 cidr, 2043 classful)

Largest number of  cidr routes:                    589 announced by  AS705
Largest number of classful routes:                1076 announced by  AS701



1) Gains by aggregating at the origin AS level

 --- 25Aug00 ---
ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS12935       12        3        9   75.0%   Nocom.net AB, HQ Stockholm
AS9655        11        3        8   72.7%   Startvision
AS12540       10        2        8   80.0%   IdecNet Autonomous System
AS9867        10        3        7   70.0%   CHONJU TECHNICAL COLLEGE
AS9772         8        1        7   87.5%   Mighty Information Systems
AS7980         9        2        7   77.8%   Global One Communications
AS7959        12        5        7   58.3%   VICON
AS7888        12        5        7   58.3%   CSI Health Autonomous System Obje
AS7453         8        1        7   87.5%   GTINET
AS6630         9        2        7   77.8%   LOA
AS6614         8        1        7   87.5%   USCC-ASN
AS3753        10        3        7   70.0%   NSCEE
AS3339         9        2        7   77.8%   AT&T Israel
AS14677       11        4        7   63.6%   UNKNOWN
AS14659        8        1        7   87.5%   LivePerson, Inc.
AS14204        8        1        7   87.5%   UNKNOWN
AS14062       11        4        7   63.6%   UNKNOWN
AS13894       10        3        7   70.0%   UNKNOWN
AS13761        8        1        7   87.5%   IMPSAT Brasil
AS13418       10        3        7   70.0%   UNKNOWN
AS12671        8        1        7   87.5%   Jordan Internet Network Autonomou
AS11950        8        1        7   87.5%   UNKNOWN
AS11900        9        2        7   77.8%   UNKNOWN
AS11699       10        3        7   70.0%   Blue Mountain Internet
AS10647       10        3        7   70.0%   UNKNOWN
AS10242       12        5        7   58.3%   USINTERNET
AS10044       10        3        7   70.0%   Wonkwang Health Science College
AS8221        12        6        6   50.0%   Isabel-Belgium
AS7699        10        4        6   60.0%   Weblink Philippines Inc
AS6296        12        6        6   50.0%   MIND


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