[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, 22 Dec 2000 12:00:03 -0800
  • 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 Dec 22 12:00:00 PST 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            A summary of the last weeks changes in terms of withdrawn and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 22Dec00
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      151200	95822
      161200	95919
      171200	95802
      181200	95790
      191200	96081
      201200	96409
      211200	96198
      221200	96064
      
      Check http://www.employees.org/~tbates/cidr.plot.html for a plot
      of the table history.
      
      
      Possible Bogus Routes
      ---------------------
      
      *** Bogus 91.16.23.0/24 from AS11770
      *** Bogus 219.219.219.0 from AS2563
      
      AS Summary
      ----------
      
      Number of ASes in routing system:                 9441
      
      Number of ASes announcing only one prefix:        5499 (3068 cidr, 2431 classful)
      
      Largest number of  cidr routes:                   1099 announced by  AS705
      Largest number of classful routes:                1656 announced by AS1221
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 22Dec00 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS1221      1656     1216      440   26.6%   TELSTRA-AS
      AS2563       239       72      167   69.9%   KoRean Education Network
      AS701       1572     1417      155    9.9%   Alternet
      AS271        284      131      153   53.9%   BCnet Backbone
      AS9269       168       46      122   72.6%   Hong Kong CTI
      AS7545       189       67      122   64.6%   TPG Internet Pty Ltd
      AS8013       450      345      105   23.3%   PSINET-CA
      AS6595       166       64      102   61.4%   DODDSEUR
      AS7657       255      164       91   35.7%   The Internet Group Limited
      AS4755       215      125       90   41.9%   Videsh Sanchar Nigam Ltd. India
      AS705        328      244       84   25.6%   ALTERNET-AS
      AS4293       341      260       81   23.8%   Internal ASN for C&W
      AS174        534      453       81   15.2%   Performance Systems International
      AS7496       100       22       78   78.0%   Power Up
      AS7046       333      256       77   23.1%   UUNET-CUSTOMER
      AS1727       183      107       76   41.5%   MRMS-WEST
      AS4151       283      208       75   26.5%   USDA Internet Access Network
      AS724        245      172       73   29.8%   DLA-ASNBLOCK-AS
      AS3908       234      162       72   30.8%   Supernet, Inc.
      AS1942       137       65       72   52.6%   FR-CICG-GRENOBLE
      AS13999       79        7       72   91.1%   UNKNOWN
      AS577        240      170       70   29.2%   Bell Backbone
      AS7018       590      526       64   10.8%   AT&T WorldNet Service Backbone
      AS5106       101       37       64   63.4%   AADS-COLUMBUS
      AS3749       123       60       63   51.2%   TECNET
      AS226        168      105       63   37.5%   USC/Information Sciences Institut
      AS2548       370      310       60   16.2%   DIGEX-AS
      AS3602       306      247       59   19.3%   Sprint Canada Inc.
      AS16758       63        6       57   90.5%   UNKNOWN
      AS376        133       77       56   42.1%   RISQ
      
      
      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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