[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, 11 Feb 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 Feb 11 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            A summary of the last weeks changes in terms of withdrawn and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 11Feb00
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      040200	71335
      050200	71195
      060200	71192
      070200	71282
      080200	71554
      090200	71729
      100200	71823
      110200	71788
      
      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:                 6639
      
      Number of ASes announcing only one prefix:        3604 (1959 cidr, 1645 classful)
      
      Largest number of  cidr routes:                    704 announced by  AS701
      Largest number of classful routes:                 980 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 11Feb00 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS271        439      153      286   65.1%   BCnet Backbone
      AS7046       426      283      143   33.6%   UUNET-CUSTOMER
      AS1221       663      527      136   20.5%   TELSTRA-AS
      AS9269       141       25      116   82.3%   Hong Kong CTI
      AS9706       139       32      107   77.0%   Pusan Metropolitan City Office of
      AS2609       124       18      106   85.5%   EUnet-TN
      AS7657       286      187       99   34.6%   The Internet Group Limited
      AS4293       272      175       97   35.7%   Internal ASN for C&W
      AS2715       157       62       95   60.5%   REDERIO-AS
      AS7545       154       61       93   60.4%   TPG Internet Pty Ltd
      AS6429       205      118       87   42.4%   RDC-INTERNET
      AS7496       124       38       86   69.4%   Power Up
      AS174        559      476       83   14.8%   Performance Systems International
      AS705        301      220       81   26.9%   ALTERNET-AS
      AS816        379      302       77   20.3%   UUNET Canada (ASN-UUNETCA-AS4)
      AS3749       137       61       76   55.5%   TECNET
      AS9304        99       24       75   75.8%   Hutchcity
      AS577        248      175       73   29.4%   Bell Backbone
      AS3602       316      247       69   21.8%   Sprint Canada Inc.
      AS7029       113       48       65   57.5%   ALLTELNET
      AS4200       170      105       65   38.2%   AGIS (Apex Global Information Ser
      AS4740       333      275       58   17.4%   Ozemail Pty Ltd (ASN-OZEMAIL)
      AS1727       139       81       58   41.7%   MRMS-WEST
      AS7260       103       46       57   55.3%   NORLIGHT
      AS209        385      333       52   13.5%   Qwest Communications
      AS4151        97       50       47   48.5%   USDA Internet Access Network
      AS9557        66       21       45   68.2%   Pakistan Telecommunication Compan
      AS4000        96       51       45   46.9%   Global IP
      AS7568        59       15       44   74.6%   C.S. Communications Co., Ltd.
      AS684         87       45       42   48.3%   Manitoba Regional Network Backbon
      
      
      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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