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The Cidr Report

  • From: Tony Bates
  • Date: Fri Jun 04 22:15:04 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      A summary of the last weeks changes in terms of withdrawn and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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