[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, 28 Jan 2000 12:00:02 -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 Jan 28 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            A summary of the last weeks changes in terms of withdrawn and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 28Jan00
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      210100	70096
      220100	70186
      230100	69979
      240100	69974
      250100	70118
      260100	70512
      270100	70355
      280100	70416
      
      Check http://www.employees.org/~tbates/cidr.plot.html for a plot
      of the table history.
      
      
      Possible Bogus Routes
      ---------------------
      
      *** Bogus 219.91.160.0/22 from AS7742
      *** Bogus 219.91.164.0/23 from AS7742
      
      AS Summary
      ----------
      
      Number of ASes in routing system:                 6541
      
      Number of ASes announcing only one prefix:        3545 (1928 cidr, 1617 classful)
      
      Largest number of  cidr routes:                    708 announced by  AS701
      Largest number of classful routes:                 986 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 28Jan00 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS271        385      143      242   62.9%   BCnet Backbone
      AS7046       411      269      142   34.5%   UUNET-CUSTOMER
      AS9269       141       25      116   82.3%   Hong Kong CTI
      AS1221       632      520      112   17.7%   TELSTRA-AS
      AS2609       125       16      109   87.2%   EUnet-TN
      AS2715       162       61      101   62.3%   REDERIO-AS
      AS7657       286      186      100   35.0%   The Internet Group Limited
      AS7545       154       61       93   60.4%   TPG Internet Pty Ltd
      AS4293       258      166       92   35.7%   Internal ASN for C&W
      AS6429       204      115       89   43.6%   RDC-INTERNET
      AS9706       109       23       86   78.9%   Pusan Metropolitan City Office of
      AS174        559      475       84   15.0%   Performance Systems International
      AS7496       120       40       80   66.7%   Power Up
      AS705        283      205       78   27.6%   ALTERNET-AS
      AS577        255      178       77   30.2%   Bell Nexxia Backbone
      AS3749       137       61       76   55.5%   TECNET
      AS9304        95       24       71   74.7%   Hutchcity
      AS816        367      296       71   19.3%   UUNET Canada (ASN-UUNETCA-AS4)
      AS3602       317      248       69   21.8%   Sprint Canada Inc.
      AS4200       168      103       65   38.7%   AGIS (Apex Global Information Ser
      AS4740       340      282       58   17.1%   Ozemail Pty Ltd (ASN-OZEMAIL)
      AS7260       104       47       57   54.8%   NORLIGHT
      AS1727       117       65       52   44.4%   MRMS-WEST
      AS209        378      327       51   13.5%   Qwest Communications
      AS4151        95       48       47   49.5%   USDA Internet Access Network
      AS7029        83       39       44   53.0%   ALLTELNET
      AS11127      125       82       43   34.4%   UNKNOWN
      AS701        986      944       42    4.3%   Alternet
      AS684         87       45       42   48.3%   Manitoba Regional Network Backbon
      AS7568        56       16       40   71.4%   C.S. Communications Co., Ltd.
      
      
      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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