[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 Oct 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 Oct  6 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            A summary of the last weeks changes in terms of withdrawn and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 06Oct00
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      290900	88909
      300900	88195
      011000	88325
      021000	88317
      031000	88456
      041000	88428
      051000	88525
      061000	88980
      
      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:                 8668
      
      Number of ASes announcing only one prefix:        4969 (2769 cidr, 2200 classful)
      
      Largest number of  cidr routes:                    907 announced by  AS701
      Largest number of classful routes:                1086 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 06Oct00 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS271        431      153      278   64.5%   BCnet Backbone
      AS1785       592      379      213   36.0%   AppliedTheory Communications
      AS1221       621      454      167   26.9%   TELSTRA-AS
      AS816        579      434      145   25.0%   UUNET Canada (ASN-UUNETCA-AS4)
      AS9269       177       47      130   73.4%   Hong Kong CTI
      AS7046       405      283      122   30.1%   COQUI-NET PRTC Internet
      AS2609       128        8      120   93.8%   EUnet-TN
      AS9304       125       15      110   88.0%   Hutchcity
      AS4755       224      116      108   48.2%   Videsh Sanchar Nigam Ltd. India
      AS7657       324      220      104   32.1%   The Internet Group Limited
      AS7545       159       55      104   65.4%   TPG Internet Pty Ltd
      AS705        363      263      100   27.5%   ALTERNET-AS
      AS9706       103        9       94   91.3%   Pusan Metropolitan City Office of
      AS6429       210      116       94   44.8%   FirstCom Internet
      AS7496       126       35       91   72.2%   Power Up
      AS8013       492      406       86   17.5%   PSINET-CA
      AS174        539      453       86   16.0%   Performance Systems International
      AS4293       340      257       83   24.4%   Internal ASN for C&W
      AS13999       91        9       82   90.1%   UNKNOWN
      AS6595       138       57       81   58.7%   DODDSEUR
      AS3908       256      177       79   30.9%   Supernet, Inc.
      AS577        248      175       73   29.4%   Bell Backbone
      AS8895       107       37       70   65.4%   Saudi Arabia AS
      AS724        223      156       67   30.0%   DLA-ASNBLOCK-AS
      AS7018       579      512       67   11.6%   AT&T WorldNet Service Backbone
      AS701       1086     1021       65    6.0%   Alternet
      AS5106        99       36       63   63.6%   AADS-COLUMBUS
      AS1727       139       76       63   45.3%   MRMS-WEST
      AS3749       119       57       62   52.1%   TECNET
      AS226        170      108       62   36.5%   USC/Information Sciences Institut
      
      
      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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