[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, 16 Feb 2001 23:00:02 -0800
  • 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 Feb 16 23:00:00 PST 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            A summary of the last weeks changes in terms of withdrawn and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 16Feb01
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      050201	96681
      060201	96726
      070201	96978
      080201	97041
      090201	97137
      100201	96880
      110201	96509
      120201	96907
      
      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:                 6307
      
      Number of ASes announcing only one prefix:        2489 (0 cidr, 2489 classful)
      
      Largest number of  cidr routes:                      0 announced by       
      Largest number of classful routes:                1648 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 16Feb01 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS1221      1623     1207      416   25.6%   Telstra Pty Ltd
      AS701       1648     1453      195   11.8%   UUNET Technologies, Inc. 
      AS271        283      130      153   54.1%   University of British Columbia 
      AS8006       146       13      133   91.1%   Systems & Software Consortium, In
      AS7545       196       71      125   63.8%   ASNBLK-APNIC-AS-2-BLOCK
      AS9269       168       46      122   72.6%   ASNBLK-APNIC-AS-3-BLOCK
      AS6429       218      110      108   49.5%   RdC Internet 
      AS6595       163       62      101   62.0%   DoD Education Activity Network As
      AS8013       435      338       97   22.3%   PSINet Ltd. Canada 
      AS13999      107       10       97   90.7%   Mega Cable S.A. de C.V. 
      AS4293       375      282       93   24.8%   Cable & Wireless USA 
      AS7496       104       23       81   77.9%   ASNBLK-APNIC-AS-2-BLOCK
      AS4151       251      170       81   32.3%   USDA 
      AS705        314      235       79   25.2%   UUNET Technologies, Inc. 
      AS4755       206      134       72   35.0%   ASN-APNIC-AS-BLOCK-ASNBLOCK
      AS1942       137       65       72   52.6%   FR-CICG-GRENOBLE
      AS7046       325      255       70   21.5%   UUNET Technologies, Inc. 
      AS7018       611      541       70   11.5%   AT&T 
      AS577        236      167       69   29.2%   Bell Advanced Communications Inc.
      AS174        500      432       68   13.6%   PSINet Inc. 
      AS1727       161       93       68   42.2%   Commander Naval Surface force US 
      AS9498        88       21       67   76.1%   BHARTI BT INTERNET LTD.
      AS724        219      152       67   30.6%   DLA Systems Automation Center 
      AS5106       101       37       64   63.4%   Ameritech Advanced Data Services,
      AS3464       153       92       61   39.9%   Alabama SuperComputer Network 
      AS226        155       95       60   38.7%   Los Nettos 
      AS7657       184      126       58   31.5%   ASNBLK-APNIC-AS-2-BLOCK
      AS3749       115       57       58   50.4%   Tennessee Board of Regents 
      AS16758       63        6       57   90.5%   IKON Office Solutions 
      AS6413        67       11       56   83.6%   Southern Online Systems, 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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