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The Cidr Report

  • From: CIDR Report
  • Date: Sat Jun 08 02:02:42 2002


This is an auto-generated mail on Fri Jun  7 23:00:00 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      A summary of the last weeks changes in terms of withdrawn and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 07Jun02


0) General Status

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

Date	Prefixes
310502	110978
010602	110824
020602	110920
030602	110922
040602	111222
050602	111490
060602	111589
070602	111313

Check http://www.employees.org/~tbates/cidr.plot.html for a plot
of the table history.


Possible Bogus Routes
---------------------

*** Bogus 192.0.2.0 from AS1103

AS Summary
----------

Number of ASes in routing system:              13089

Number of ASes announcing only one prefix:      7961 (4467 cidr, 3494 classful)

Largest number of  cidr routes:                  646 announced by  AS701
Largest number of classful routes:              1359 announced by  AS701



1) Gains by aggregating at the origin AS level

 --- 07Jun02 ---
ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS701       1359     1091      268   19.7%   UUNET Technologies, Inc. 
AS1221      1089      843      246   22.6%   Telstra Pty Ltd
AS17557      292      104      188   64.4%   Pakistan Telecom
AS852        590      431      159   26.9%   Telus Advanced Communications 
AS7018       818      687      131   16.0%   AT&T 
AS6595       177       57      120   67.8%   DoD Education Activity Network As
AS16473      194       76      118   60.8%   Bell South 
AS705        304      204      100   32.9%   UUNET Technologies, Inc. 
AS19632       98        4       94   95.9%   Metropolis Intercom S.A. 
AS4151       234      141       93   39.7%   USDA 
AS12302      120       32       88   73.3%   MobiFon S.A.
AS7303       150       65       85   56.7%   Telecom Argentina Stet-France Tel
AS7046       331      246       85   25.7%   UUNET Technologies, Inc. 
AS16814      104       19       85   81.7%   NSS, S.A. 
AS1239       506      421       85   16.8%   Sprint 
AS2048       181      104       77   42.5%   State of Louisiana 
AS577        267      194       73   27.3%   Bell Advanced Communications Inc.
AS4755       189      118       71   37.6%   Videsh Sanchar Nigam Ltd. Autonom
AS724        230      161       69   30.0%   DLA Systems Automation Center 
AS4323       408      339       69   16.9%   Time Warner Communications, Inc. 
AS226        154       91       63   40.9%   Los Nettos 
AS3464       166      105       61   36.7%   Alabama SuperComputer Network 
AS19834       64        4       60   93.8%   NetForce, Inc. 
AS10620       83       23       60   72.3%   TVCABLE BOGOTA 
AS1          450      392       58   12.9%   GENUITY 
AS3908       308      251       57   18.5%   Supernet, Inc. 
AS16758       63        6       57   90.5%   IKON Office Solutions 
AS209        314      258       56   17.8%   Qwest 
AS9051        79       27       52   65.8%   INCONET Autonomous System
AS6535        62       15       47   75.8%   Chilesat Servicios  Empresariales

Total      55269    42687    12582   22.8%


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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