[apops] The Cidr Report

  • To: nanog at merit dot edu
  • Subject: [apops] The Cidr Report
  • From: CIDR Report <cidr-report at cisco dot com>
  • Date: Fri, 19 Oct 2001 23:00:04 -0700
  • Cc: tbates at cisco dot com, eof-list at ripe dot net, apops at lists dot apnic dot net, routing-wg at ripe dot net, afnog at afnog dot org
  • Sender: owner-apops@lists.apnic.net
    • 
      This is an auto-generated mail on Fri Oct 19 23:00:00 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            A summary of the last weeks changes in terms of withdrawn and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 dot com>.
      
      
      
      ------------------------------------------------------------------------------
      
                              CIDR REPORT for 19Oct01
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      121001	104773
      131001	104893
      141001	104864
      151001	104979
      161001	105115
      171001	105004
      181001	105147
      191001	104997
      
      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:              11802
      
      Number of ASes announcing only one prefix:      7010 (3983 cidr, 3027 classful)
      
      Largest number of  cidr routes:                  852 announced by  AS701
      Largest number of classful routes:              1392 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 19Oct01 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS1221      1231      944      287   23.3%   Telstra Pty Ltd
      AS4151       306      171      135   44.1%   USDA 
      AS13999      136        9      127   93.4%   Mega Cable S.A. de C.V. 
      AS16473      201       76      125   62.2%   Bell South 
      AS577        304      184      120   39.5%   Bell Advanced Communications Inc.
      AS4293       373      266      107   28.7%   Cable & Wireless USA 
      AS2048       216      116      100   46.3%   State of Louisiana 
      AS271        161       74       87   54.0%   University of British Columbia 
      AS11686      224      143       81   36.2%   Education Networks of America 
      AS4755       201      124       77   38.3%   Videsh Sanchar Nigam Ltd. Autonom
      AS1239       488      414       74   15.2%   Sprint 
      AS12302      106       35       71   67.0%   MobiFon S.A.
      AS4200       141       74       67   47.5%   Apex Global Information Services,
      AS19632       72        7       65   90.3%   Metropolis Intercom S.A. 
      AS3464       160       96       64   40.0%   Alabama SuperComputer Network 
      AS17557      131       69       62   47.3%   Pakistan Telecom
      AS16758       63        6       57   90.5%   IKON Office Solutions 
      AS209        308      253       55   17.9%   Qwest 
      AS306         60        6       54   90.0%   National Guard Bureau 
      AS226        146       93       53   36.3%   Los Nettos 
      AS400        136       85       51   37.5%   Headquarters Standard Systems Cen
      AS17561      111       60       51   45.9%   Internet service provision to Wes
      AS1913       155      106       49   31.6%   Defense Logistics Agency 
      AS1          527      479       48    9.1%   BBN Planet 
      AS10620       68       21       47   69.1%   TVCABLE BOGOTA 
      AS4323       247      201       46   18.6%   Time Warner Communications, Inc. 
      AS15290      248      202       46   18.5%   AT&T Canada IES 
      AS376        120       75       45   37.5%   Reseau Interordinateurs Scientiqu
      AS16814       64       19       45   70.3%   NSS, S.A. 
      AS5106        81       38       43   53.1%   Ameritech Advanced Data Services,
      
      
      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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