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The Cidr Report

  • From: CIDR Report
  • Date: Sat Jun 29 02:03:55 2002


This is an auto-generated mail on Fri Jun 28 23:00:01 PDT 2002
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.

Check http://www.employees.org/~tbates/cidr-report.html for a daily
update of this report.

NEW: Check http://www.employees.org/~tbates/cidr-report-region.html for
the regional version of this report.

NEW: Check http://www.employees.org/~tbates/autnums.html for a complete
list of autonomous system number to name mappings as used by the CIDR-Report.

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      A summary of the last weeks changes in terms of withdrawn and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 amount of withdrawls.

   3) Interesting aggregates

      Interesting here means not an aggregate made as a set of 
      classful routes.      

Thanks to GX Networks for giving me access to their routing tables once a
day. 

Please send any comments about this report directly to CIDR Report <cidr-report@cisco.com>.



------------------------------------------------------------------------------

                        CIDR REPORT for 28Jun02


0) General Status

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

Date	Prefixes
210602	111582
220602	111717
230602	111670
240602	111786
250602	111981
260602	111996
270602	111954
280602	111076

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:              13191

Number of ASes announcing only one prefix:      8060 (4540 cidr, 3520 classful)

Largest number of  cidr routes:                  623 announced by  AS701
Largest number of classful routes:              1237 announced by  AS701



1) Gains by aggregating at the origin AS level

 --- 28Jun02 ---
ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS1221      1097      846      251   22.9%   Telstra Pty Ltd
AS701       1237      989      248   20.0%   UUNET Technologies, Inc. 
AS17557      298      112      186   62.4%   Pakistan Telecom
AS6595       204       58      146   71.6%   DoD Education Activity Network As
AS7018       808      677      131   16.2%   AT&T 
AS852        479      352      127   26.5%   Telus Advanced Communications 
AS16473      193       75      118   61.1%   Bell South 
AS4151       237      142       95   40.1%   USDA 
AS19632       98        4       94   95.9%   Metropolis Intercom S.A. 
AS1239       523      430       93   17.8%   Sprint 
AS12302      123       30       93   75.6%   MobiFon S.A.
AS7303       159       68       91   57.2%   Telecom Argentina Stet-France Tel
AS7046       325      236       89   27.4%   UUNET Technologies, Inc. 
AS16814      105       20       85   81.0%   NSS, S.A. 
AS226        176       92       84   47.7%   Los Nettos 
AS2048       182      104       78   42.9%   State of Louisiana 
AS4755       205      132       73   35.6%   Videsh Sanchar Nigam Ltd. Autonom
AS577        262      190       72   27.5%   Bell Advanced Communications Inc.
AS4323       408      339       69   16.9%   Time Warner Communications, Inc. 
AS3464       164      103       61   37.2%   Alabama SuperComputer Network 
AS19834       64        4       60   93.8%   NetForce, Inc. 
AS10620       83       23       60   72.3%   TVCABLE BOGOTA 
AS724        216      157       59   27.3%   DLA Systems Automation Center 
AS6123        70       13       57   81.4%   Web Professionals 
AS3908       310      253       57   18.4%   Supernet, Inc. 
AS209        315      258       57   18.1%   Qwest 
AS16758       63        6       57   90.5%   IKON Office Solutions 
AS1          444      388       56   12.6%   GENUITY 
AS9051        81       26       55   67.9%   INCONET Autonomous System
AS9498        80       27       53   66.2%   BHARTI BT INTERNET LTD.

Total      54876    42309    12567   22.9%


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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