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The Cidr Report




This is an auto-generated mail on Fri Oct 12 23:00:02 PDT 2001
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      A summary of the last weeks changes in terms of withdrawn and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 amont 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 at cisco.com>.


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

                        CIDR REPORT for 12Oct01


0) General Status

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

Date	Prefixes
051001	104449
061001	104665
071001	104597
081001	104752
091001	104769
101001	104817
111001	105289
121001	104773

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


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

*** Bogus 1.0.0.0 from AS7623

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

Number of ASes in routing system:              11764

Number of ASes announcing only one prefix:      7013 (3982 cidr, 3031 classful)

Largest number of  cidr routes:                  872 announced by  AS701
Largest number of classful routes:              1406 announced by  AS701



1) Gains by aggregating at the origin AS level

 --- 12Oct01 ---
ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS1221      1232      947      285   23.1%   Telstra Pty Ltd
AS701       1406     1185      221   15.7%   UUNET Technologies, Inc. 
AS4151       304      172      132   43.4%   USDA 
AS16473      201       76      125   62.2%   Bell South 
AS577        304      185      119   39.1%   Bell Advanced Communications Inc.
AS13999      132       16      116   87.9%   Mega Cable S.A. de C.V. 
AS4293       380      271      109   28.7%   Cable & Wireless USA 
AS6595       167       60      107   64.1%   DoD Education Activity Network As
AS7018       777      672      105   13.5%   AT&T 
AS721        366      266      100   27.3%   DLA Systems Automation Center 
AS705        262      162      100   38.2%   UUNET Technologies, Inc. 
AS2048       216      116      100   46.3%   State of Louisiana 
AS4755       199      122       77   38.7%   Videsh Sanchar Nigam Ltd. Autonom
AS11686      215      138       77   35.8%   Education Networks of America 
AS1239       481      407       74   15.4%   Sprint 
AS7046       331      261       70   21.1%   UUNET Technologies, Inc. 
AS4200       142       74       68   47.9%   Apex Global Information Services,
AS3464       162       95       67   41.4%   Alabama SuperComputer Network 
AS12302      100       34       66   66.0%   MobiFon S.A.
AS724        216      151       65   30.1%   DLA Systems Automation Center 
AS6471       129       64       65   50.4%   ENTEL CHILE S.A. 
AS17557      128       66       62   48.4%   Pakistan Telecom
AS19632       70       11       59   84.3%   Metropolis Intercom S.A. 
AS16758       63        6       57   90.5%   IKON Office Solutions 
AS209        309      254       55   17.8%   Qwest 
AS306         60        6       54   90.0%   National Guard Bureau 
AS226        145       93       52   35.9%   Los Nettos 
AS400        135       84       51   37.8%   Headquarters Standard Systems Cen
AS17561      111       60       51   45.9%   Internet service provision to Wes
AS1          529      478       51    9.6%   BBN Planet 


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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