[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, 26 May 2000 12:00:02 -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 May 26 12:00:00 PDT 2000
      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            A summary of the last weeks changes in terms of withdrawn and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 26May00
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      080400	75151
      090400	75137
      100400	75215
      110400	75403
      120400	75730
      130400	75919
      010500	76182
      020500	76265
      
      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:                 5027
      
      Number of ASes announcing only one prefix:        1865 (0 cidr, 1865 classful)
      
      Largest number of  cidr routes:                      0 announced by       
      Largest number of classful routes:                1002 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 26May00 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS271        437      152      285   65.2%   BCnet Backbone
      AS7046       500      336      164   32.8%   COQUI-NET PRTC Internet
      AS9269       167       29      138   82.6%   Hong Kong CTI
      AS9706       153       26      127   83.0%   Pusan Metropolitan City Office of
      AS1221       529      408      121   22.9%   TELSTRA-AS
      AS2609       123       18      105   85.4%   EUnet-TN
      AS7545       164       66       98   59.8%   TPG Internet Pty Ltd
      AS7657       264      168       96   36.4%   The Internet Group Limited
      AS174        552      464       88   15.9%   Performance Systems International
      AS7496       126       39       87   69.0%   Power Up
      AS9304       109       24       85   78.0%   Hutchcity
      AS9557       100       17       83   83.0%   Pakistan Telecommunication Compan
      AS6429       204      121       83   40.7%   RDC-INTERNET
      AS577        248      172       76   30.6%   Bell Backbone
      AS7029       146       71       75   51.4%   ALLTELNET
      AS209        463      392       71   15.3%   Qwest Communications
      AS7018       529      463       66   12.5%   AT&T WorldNet Service Backbone
      AS1727       162       98       64   39.5%   MRMS-WEST
      AS4293       253      190       63   24.9%   Internal ASN for C&W
      AS724        205      143       62   30.2%   DLA-ASNBLOCK-AS
      AS7260       111       50       61   55.0%   NORLIGHT
      AS705        270      209       61   22.6%   ALTERNET-AS
      AS3749       121       61       60   49.6%   TECNET
      AS3602       307      249       58   18.9%   Sprint Canada Inc.
      AS6595       107       50       57   53.3%   DODDSEUR
      AS4740       336      279       57   17.0%   Ozemail Pty Ltd (ASN-OZEMAIL)
      AS5106        81       29       52   64.2%   AADS-COLUMBUS
      AS7568        63       18       45   71.4%   C.S. Communications Co., Ltd.
      AS816        308      266       42   13.6%   UUNET Canada (ASN-UUNETCA-AS4)
      AS6528        48        6       42   87.5%   WORLD-LYNX
      
      
      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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