[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, 13 Apr 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 Apr 13 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.
      
      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            A summary of the last weeks changes in terms of withdrawn and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 13Apr01
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      060401	99382
      070401	99975
      080401	99951
      090401	100057
      100401	99187
      110401	99440
      120401	100138
      130401	99823
      
      Check http://www.employees.org/~tbates/cidr.plot.html for a plot
      of the table history.
      
      
      Possible Bogus Routes
      ---------------------
      
      *** Bogus 223.255.46.0 from AS6853
      *** Bogus 223.255.70.0 from AS6853
      
      AS Summary
      ----------
      
      Number of ASes in routing system:                10451
      
      Number of ASes announcing only one prefix:        6152 (3491 cidr, 2661 classful)
      
      Largest number of  cidr routes:                   1051 announced by  AS705
      Largest number of classful routes:                1589 announced by AS1221
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 13Apr01 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS1221      1589     1191      398   25.0%   Telstra Pty Ltd
      AS701       1471     1283      188   12.8%   UUNET Technologies, Inc. 
      AS15412      666      535      131   19.7%   FLAG Telecom Global Internet AS
      AS6429       210      103      107   51.0%   RdC Internet 
      AS4151       245      142      103   42.0%   USDA 
      AS6595       165       63      102   61.8%   DoD Education Activity Network As
      AS705        342      245       97   28.4%   UUNET Technologies, Inc. 
      AS4293       372      281       91   24.5%   Cable & Wireless USA 
      AS7018       697      609       88   12.6%   AT&T 
      AS8013       321      236       85   26.5%   PSINet Ltd. Canada 
      AS4755       218      136       82   37.6%   Videsh Sanchar Nigam Ltd. Autonom
      AS13999       97       16       81   83.5%   Mega Cable S.A. de C.V. 
      AS577        241      172       69   28.6%   Bell Advanced Communications Inc.
      AS5106        98       35       63   64.3%   Ameritech Advanced Data Services,
      AS3749       120       59       61   50.8%   Tennessee Board of Regents 
      AS3464       152       91       61   40.1%   Alabama SuperComputer Network 
      AS11252       92       34       58   63.0%   ISU Computer Center Bldg. 5 
      AS16758       63        6       57   90.5%   IKON Office Solutions 
      AS6413        67       11       56   83.6%   Southern Online Systems, Inc. 
      AS226        149       93       56   37.6%   Los Nettos 
      AS1          606      550       56    9.2%   BBN Planet 
      AS724        201      146       55   27.4%   DLA Systems Automation Center 
      AS4323       232      178       54   23.3%   Time Warner Communications, Inc. 
      AS6471        99       46       53   53.5%   ENTEL CHILE S.A. 
      AS7568        83       31       52   62.7%   C.S. Communications Co., Ltd.
      AS9498        72       22       50   69.4%   BHARTI BT INTERNET LTD.
      AS9269       115       66       49   42.6%   City Telecom (H.K.) Ltd.
      AS852        200      152       48   24.0%   Telus Advanced Communications 
      AS10692       62       14       48   77.4%   DLS Computer Services, Inc. 
      AS174        407      360       47   11.5%   PSINet Inc. 
      
      
      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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