[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, 14 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 14 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            A summary of the last weeks changes in terms of withdrawn and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 14Jul00
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      070700	81549
      080700	81249
      090700	81150
      100700	81258
      110700	81337
      120700	81502
      130700	81740
      140700	82006
      
      Check http://www.employees.org/~tbates/cidr.plot.html for a plot
      of the table history.
      
      
      Possible Bogus Routes
      ---------------------
      
      *** Bogus 65.56.64.0/21 from AS2941
      
      AS Summary
      ----------
      
      Number of ASes in routing system:                 7900
      
      Number of ASes announcing only one prefix:        4446 (2454 cidr, 1992 classful)
      
      Largest number of  cidr routes:                    960 announced by  AS701
      Largest number of classful routes:                1078 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 14Jul00 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS271        435      152      283   65.1%   BCnet Backbone
      AS7046       610      400      210   34.4%   COQUI-NET PRTC Internet
      AS1221       555      397      158   28.5%   TELSTRA-AS
      AS9706       153       26      127   83.0%   Pusan Metropolitan City Office of
      AS2609       128        8      120   93.8%   EUnet-TN
      AS7657       298      190      108   36.2%   The Internet Group Limited
      AS9304       123       17      106   86.2%   Hutchcity
      AS7545       155       57       98   63.2%   TPG Internet Pty Ltd
      AS6429       211      115       96   45.5%   RDC-INTERNET
      AS705        350      259       91   26.0%   ALTERNET-AS
      AS7496       127       39       88   69.3%   Power Up
      AS174        558      470       88   15.8%   Performance Systems International
      AS9269       153       66       87   56.9%   Hong Kong CTI
      AS577        268      181       87   32.5%   Bell Backbone
      AS4293       330      243       87   26.4%   Internal ASN for C&W
      AS724        227      156       71   31.3%   DLA-ASNBLOCK-AS
      AS701       1078     1009       69    6.4%   Alternet
      AS1727       159       92       67   42.1%   MRMS-WEST
      AS3908       261      195       66   25.3%   Supernet, Inc.
      AS5106        93       34       59   63.4%   AADS-COLUMBUS
      AS3749       119       60       59   49.6%   TECNET
      AS6595       108       50       58   53.7%   DODDSEUR
      AS4755       151       93       58   38.4%   Videsh Sanchar Nigam Ltd. India
      AS7568        81       24       57   70.4%   C.S. Communications Co., Ltd.
      AS4740       348      291       57   16.4%   Ozemail Pty Ltd (ASN-OZEMAIL)
      AS3602       299      243       56   18.7%   Sprint Canada Inc.
      AS7018       549      494       55   10.0%   AT&T WorldNet Service Backbone
      AS2764       479      425       54   11.3%   connect.com.au pty ltd
      AS1785       360      311       49   13.6%   NYSERNet Backbone
      AS209        266      218       48   18.0%   Qwest Communications
      
      
      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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