[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, 08 Jun 2001 23:00:06 -0700
  • Cc: tbates at cisco dot com, eof-list at ripe dot net, apops at apnic dot net, routing-wg at ripe dot net
  • Sender: owner-apops@lists.apnic.net
    • 
      This is an auto-generated mail on Fri Jun  8 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            A summary of the last weeks changes in terms of withdrawn and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 xara.net 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 08Jun01
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      010601	102687
      020601	102235
      030601	102123
      040601	102282
      050601	102182
      060601	102174
      070601	102400
      080601	102522
      
      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:                10948
      
      Number of ASes announcing only one prefix:        6480 (3676 cidr, 2804 classful)
      
      Largest number of  cidr routes:                   1185 announced by  AS705
      Largest number of classful routes:                1427 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 08Jun01 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS1221      1390     1031      359   25.8%   TELSTRA-AS
      AS1          599      540       59    9.8%   GTE Internetworking
      AS1239       458      401       57   12.4%   SprintLink Backbone
      AS13544       69       19       50   72.5%   autonomous system number assigned
      AS11774       73       27       46   63.0%   AS 11774 Object
      AS1267        68       26       42   61.8%   Infostrada S.p.A.
      AS1237        96       54       42   43.8%   KISTI
      AS12235       48        7       41   85.4%   Cove Software Systems Inc
      AS12302       67       28       39   58.2%   MobiFon S.A.
      AS10620       54       17       37   68.5%   autonomous system number assigned
      AS13345       66       33       33   50.0%   autonomous system number assigned
      AS11311       42        9       33   78.6%   autonomous system number assigned
      AS12064       34        2       32   94.1%   autonomous system number assigned
      AS11859       45       13       32   71.1%   autonomous system number assigned
      AS12497       32        1       31   96.9%   SA*Net Network - AS
      AS12067       32        1       31   96.9%   autonomous system number assigned
      AS12062       34        3       31   91.2%   autonomous system number assigned
      AS11606       43       12       31   72.1%   autonomous system number assigned
      AS11418       45       16       29   64.4%   autonomous system number assigned
      AS11371       75       47       28   37.3%   Rhythms
      AS10733       35        7       28   80.0%   Matrix Internet
      AS11507       80       53       27   33.8%   TouchAmerica Montana
      AS10722       58       31       27   46.6%   Aluminum Co. of America
      AS12709       32        6       26   81.2%   Melita Cable Autonomous System
      AS12564       31        5       26   83.9%   Bulgarian Government Autonomous S
      AS11781       31        5       26   83.9%   autonomous system number assigned
      AS11686      119       93       26   21.8%   Education Networks of America
      AS11367       31        5       26   83.9%   autonomous system number assigned
      AS11170       28        3       25   89.3%   autonomous system number assigned
      AS11139       70       45       25   35.7%   Regional IP Network
      
      
      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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