[apops] The Cidr Report

  • To: nanog at merit dot edu
  • Subject: [apops] The Cidr Report
  • From: Tony Bates <tbates at cisco dot com>
  • Date: Fri, 15 Jun 2001 23:00:02 -0700
  • Cc: tbates at cisco dot com, eof-list at ripe dot net, apops at 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 Jun 15 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.
      
      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            A summary of the last weeks changes in terms of withdrawn and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 me.
      
      Check http://www.employees.org/~tbates/cidr-report.html for a daily
      update of this report.
      
      
      
      ------------------------------------------------------------------------------
      
                              CIDR REPORT for 15Jun01
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      080601	102522
      090601	102942
      100601	102382
      110601	102484
      120601	102300
      130601	102055
      140601	101900
      150601	101429
      
      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:                 6880
      
      Number of ASes announcing only one prefix:        2796 (0 cidr, 2796 classful)
      
      Largest number of  cidr routes:                      0 announced by       
      Largest number of classful routes:                1403 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 15Jun01 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS1221      1392     1032      360   25.9%   UNKNOWN
      AS701       1403     1217      186   13.3%   UNKNOWN
      AS4293       396      281      115   29.0%   UNKNOWN
      AS4151       252      137      115   45.6%   UNKNOWN
      AS4755       256      142      114   44.5%   UNKNOWN
      AS6429       207      102      105   50.7%   UNKNOWN
      AS6595       159       59      100   62.9%   UNKNOWN
      AS705        251      155       96   38.2%   UNKNOWN
      AS13999      103       11       92   89.3%   UNKNOWN
      AS8013       300      222       78   26.0%   UNKNOWN
      AS577        254      179       75   29.5%   UNKNOWN
      AS7018       700      628       72   10.3%   UNKNOWN
      AS724        223      159       64   28.7%   UNKNOWN
      AS6471       114       50       64   56.1%   UNKNOWN
      AS3464       152       90       62   40.8%   UNKNOWN
      AS1          597      538       59    9.9%   UNKNOWN
      AS16758       63        6       57   90.5%   UNKNOWN
      AS2149       333      277       56   16.8%   UNKNOWN
      AS1239       439      384       55   12.5%   UNKNOWN
      AS3908       207      154       53   25.6%   UNKNOWN
      AS226        143       90       53   37.1%   UNKNOWN
      AS6413        66       14       52   78.8%   UNKNOWN
      AS5106        95       43       52   54.7%   UNKNOWN
      AS17561      112       61       51   45.5%   UNKNOWN
      AS3602       229      179       50   21.8%   UNKNOWN
      AS13544       69       19       50   72.5%   UNKNOWN
      AS9842        54        5       49   90.7%   UNKNOWN
      AS852        209      160       49   23.4%   UNKNOWN
      AS855        144       98       46   31.9%   UNKNOWN
      AS3749        94       48       46   48.9%   UNKNOWN
      
      
      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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