[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 Apr 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
  • Sender: owner-apops@lists.apnic.net
    • 
      This is an auto-generated mail on Fri Apr  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            A summary of the last weeks changes in terms of withdrawn and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 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 06Apr01
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      300301	98619
      310301	98637
      010401	98847
      020401	98771
      030401	98768
      040401	98995
      050401	99092
      060401	99382
      
      Check http://www.employees.org/~tbates/cidr.plot.html for a plot
      of the table history.
      
      
      Possible Bogus Routes
      ---------------------
      
      *** Bogus 91.16.23.0/24 from AS11770
      
      AS Summary
      ----------
      
      Number of ASes in routing system:                10427
      
      Number of ASes announcing only one prefix:        6119 (3475 cidr, 2644 classful)
      
      Largest number of  cidr routes:                    945 announced by  AS705
      Largest number of classful routes:                1594 announced by AS1221
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 06Apr01 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS1221      1594     1193      401   25.2%   Telstra Pty Ltd
      AS701       1469     1288      181   12.3%   UUNET Technologies, Inc. 
      AS8013       574      462      112   19.5%   PSINet Ltd. Canada 
      AS6429       215      103      112   52.1%   RdC Internet 
      AS6595       165       63      102   61.8%   DoD Education Activity Network As
      AS705        343      245       98   28.6%   UUNET Technologies, Inc. 
      AS13999      104        8       96   92.3%   Mega Cable S.A. de C.V. 
      AS4151       242      148       94   38.8%   USDA 
      AS4293       373      280       93   24.9%   Cable & Wireless USA 
      AS7018       674      591       83   12.3%   AT&T 
      AS4755       207      126       81   39.1%   Videsh Sanchar Nigam Ltd. Autonom
      AS577        241      172       69   28.6%   Bell Advanced Communications Inc.
      AS5106       101       37       64   63.4%   Ameritech Advanced Data Services,
      AS9498        80       17       63   78.8%   BHARTI BT INTERNET LTD.
      AS3464       153       91       62   40.5%   Alabama SuperComputer Network 
      AS3749       121       60       61   50.4%   Tennessee Board of Regents 
      AS724        211      151       60   28.4%   DLA Systems Automation Center 
      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. 
      AS376        134       78       56   41.8%   Reseau Interordinateurs Scientiqu
      AS226        148       92       56   37.8%   Los Nettos 
      AS7568        84       29       55   65.5%   C.S. Communications Co., Ltd.
      AS1          608      553       55    9.0%   BBN Planet 
      AS4323       230      176       54   23.5%   Time Warner Communications, Inc. 
      AS6471        99       46       53   53.5%   ENTEL CHILE S.A. 
      AS17561      110       59       51   46.4%   Internet service provision to Wes
      AS9269       113       64       49   43.4%   City Telecom (H.K.) Ltd.
      AS174        417      368       49   11.8%   PSINet Inc. 
      AS1237       107       58       49   45.8%   System Engineering Research Insti
      
      
      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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