[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, 06 Jul 2001 23:00:04 -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 Jul  6 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            A summary of the last weeks changes in terms of withdrawn and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 06Jul01
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      290601	100654
      300601	101008
      010701	100929
      020701	100843
      030701	101022
      040701	101049
      050701	100922
      060701	101036
      
      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:                11154
      
      Number of ASes announcing only one prefix:        6601 (3771 cidr, 2830 classful)
      
      Largest number of  cidr routes:                   1007 announced by  AS701
      Largest number of classful routes:                1423 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 06Jul01 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS1221      1342     1000      342   25.5%   UNKNOWN
      AS701       1423     1209      214   15.0%   UNKNOWN
      AS4293       394      282      112   28.4%   UNKNOWN
      AS6595       158       57      101   63.9%   UNKNOWN
      AS7018       743      651       92   12.4%   UNKNOWN
      AS6429       201      109       92   45.8%   UNKNOWN
      AS705        225      134       91   40.4%   UNKNOWN
      AS4755       207      122       85   41.1%   UNKNOWN
      AS4151       159       77       82   51.6%   UNKNOWN
      AS8013       298      218       80   26.8%   UNKNOWN
      AS13999       94       15       79   84.0%   UNKNOWN
      AS724        246      172       74   30.1%   UNKNOWN
      AS577        247      174       73   29.6%   UNKNOWN
      AS6471       118       55       63   53.4%   UNKNOWN
      AS3464       152       90       62   40.8%   UNKNOWN
      AS7046       306      245       61   19.9%   UNKNOWN
      AS1          584      524       60   10.3%   UNKNOWN
      AS16758       63        6       57   90.5%   UNKNOWN
      AS1239       446      391       55   12.3%   UNKNOWN
      AS226        144       91       53   36.8%   UNKNOWN
      AS6413        65       13       52   80.0%   UNKNOWN
      AS3908       205      154       51   24.9%   UNKNOWN
      AS17561      112       61       51   45.5%   UNKNOWN
      AS852        211      161       50   23.7%   UNKNOWN
      AS2149       323      273       50   15.5%   UNKNOWN
      AS9842        54        5       49   90.7%   UNKNOWN
      AS12302       79       30       49   62.0%   MobiFon S.A.
      AS5106        81       33       48   59.3%   UNKNOWN
      AS15290      237      191       46   19.4%   UNKNOWN
      AS3602       221      176       45   20.4%   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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