[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, 21 Jul 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 Jul 21 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            A summary of the last weeks changes in terms of withdrawn and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 21Jul00
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      140700	82006
      150700	82099
      160700	81998
      170700	81940
      180700	82120
      190700	82574
      200700	82381
      210700	82529
      
      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:                 7959
      
      Number of ASes announcing only one prefix:        4467 (2482 cidr, 1985 classful)
      
      Largest number of  cidr routes:                    964 announced by  AS701
      Largest number of classful routes:                1068 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 21Jul00 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS271        436      149      287   65.8%   BCnet Backbone
      AS7046       638      397      241   37.8%   COQUI-NET PRTC Internet
      AS1221       560      401      159   28.4%   TELSTRA-AS
      AS9706       154       21      133   86.4%   Pusan Metropolitan City Office of
      AS2609       128        8      120   93.8%   EUnet-TN
      AS7657       295      187      108   36.6%   The Internet Group Limited
      AS9304       123       17      106   86.2%   Hutchcity
      AS7545       155       57       98   63.2%   TPG Internet Pty Ltd
      AS6429       213      115       98   46.0%   RDC-INTERNET
      AS9269       154       63       91   59.1%   Hong Kong CTI
      AS7496       126       38       88   69.8%   Power Up
      AS4293       334      247       87   26.0%   Internal ASN for C&W
      AS174        553      467       86   15.6%   Performance Systems International
      AS577        256      171       85   33.2%   Bell Backbone
      AS705        327      250       77   23.5%   ALTERNET-AS
      AS724        218      150       68   31.2%   DLA-ASNBLOCK-AS
      AS1727       161       94       67   41.6%   MRMS-WEST
      AS3908       256      190       66   25.8%   Supernet, Inc.
      AS701       1068     1007       61    5.7%   Alternet
      AS6595       112       51       61   54.5%   DODDSEUR
      AS5106        95       35       60   63.2%   AADS-COLUMBUS
      AS3749       121       62       59   48.8%   TECNET
      AS7568        81       24       57   70.4%   C.S. Communications Co., Ltd.
      AS7018       551      494       57   10.3%   AT&T WorldNet Service Backbone
      AS3602       300      244       56   18.7%   Sprint Canada Inc.
      AS4755       154      101       53   34.4%   Videsh Sanchar Nigam Ltd. India
      AS4740       323      271       52   16.1%   Ozemail Pty Ltd (ASN-OZEMAIL)
      AS7993        78       28       50   64.1%   Global One Communications
      AS1785       359      311       48   13.4%   NYSERNet Backbone
      AS11252       86       38       48   55.8%   Idaho State University
      
      
      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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