[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 Jun 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 Jun 16 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            A summary of the last weeks changes in terms of withdrawn and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 16Jun00
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      090600	78901
      100600	79105
      110600	79003
      120600	79282
      130600	79244
      140600	79247
      150600	79514
      160600	80091
      
      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:                 7668
      
      Number of ASes announcing only one prefix:        4319 (2370 cidr, 1949 classful)
      
      Largest number of  cidr routes:                    935 announced by  AS701
      Largest number of classful routes:                1018 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 16Jun00 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS271        439      151      288   65.6%   BCnet Backbone
      AS1221       580      409      171   29.5%   TELSTRA-AS
      AS7046       504      344      160   31.7%   COQUI-NET PRTC Internet
      AS9269       193       46      147   76.2%   Hong Kong CTI
      AS9706       154       21      133   86.4%   Pusan Metropolitan City Office of
      AS2609       127        8      119   93.7%   EUnet-TN
      AS7657       269      166      103   38.3%   The Internet Group Limited
      AS7545       167       68       99   59.3%   TPG Internet Pty Ltd
      AS6429       208      116       92   44.2%   RDC-INTERNET
      AS9304       117       26       91   77.8%   Hutchcity
      AS7496       125       40       85   68.0%   Power Up
      AS577        286      206       80   28.0%   Bell Backbone
      AS4293       316      238       78   24.7%   Internal ASN for C&W
      AS705        339      262       77   22.7%   ALTERNET-AS
      AS174        522      446       76   14.6%   Performance Systems International
      AS1727       165       92       73   44.2%   MRMS-WEST
      AS9557        84       19       65   77.4%   Pakistan Telecommunication Compan
      AS724        208      146       62   29.8%   DLA-ASNBLOCK-AS
      AS3602       306      246       60   19.6%   Sprint Canada Inc.
      AS3749       118       59       59   50.0%   TECNET
      AS5106        85       27       58   68.2%   AADS-COLUMBUS
      AS6595       104       47       57   54.8%   DODDSEUR
      AS4740       333      277       56   16.8%   Ozemail Pty Ltd (ASN-OZEMAIL)
      AS209        395      339       56   14.2%   Qwest Communications
      AS7568        67       14       53   79.1%   C.S. Communications Co., Ltd.
      AS7018       532      479       53   10.0%   AT&T WorldNet Service Backbone
      AS376        120       68       52   43.3%   RISQ
      AS1591       173      122       51   29.5%   HQASC MEDNET-ASN
      AS1785       364      315       49   13.5%   NYSERNet Backbone
      AS701       1018      970       48    4.7%   Alternet
      
      
      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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