[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 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 14 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            A summary of the last weeks changes in terms of withdrawn and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 14Jan00
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      070100	69327
      080100	69344
      090100	69247
      100100	69357
      110100	69510
      120100	69669
      130100	69616
      140100	69862
      
      Check http://www.employees.org/~tbates/cidr.plot.html for a plot
      of the table history.
      
      
      Possible Bogus Routes
      ---------------------
      
      
      AS Summary
      ----------
      
      Number of ASes in routing system:                 4739
      
      Number of ASes announcing only one prefix:        2019 (480 cidr, 1539 classful)
      
      Largest number of  cidr routes:                    324 announced by AS6172
      Largest number of classful routes:                 953 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 14Jan00 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS9269       134       21      113   84.3%   Hong Kong CTI
      AS2609       124       18      106   85.5%   EUnet-TN
      AS7545       153       60       93   60.8%   TPG Internet Pty Ltd
      AS1653       129       38       91   70.5%   SUNET Swedish University Network
      AS6429       194      117       77   39.7%   RDC-INTERNET
      AS7496       111       36       75   67.6%   Power Up
      AS3749       135       61       74   54.8%   TECNET
      AS4200       171      105       66   38.6%   AGIS (Apex Global Information Ser
      AS9304        82       21       61   74.4%   Hutchcity
      AS4151       107       56       51   47.7%   USDA Internet Access Network
      AS684         92       46       46   50.0%   Manitoba Regional Network Backbon
      AS4755       113       73       40   35.4%   Videsh Sanchar Nigam Ltd. India
      AS7568        54       16       38   70.4%   C.S. Communications Co., Ltd.
      AS6528        46        8       38   82.6%   WORLD-LYNX
      AS7029        78       41       37   47.4%   ALLTELNET
      AS7390        50       14       36   72.0%   NLSLAN
      AS6172       149      113       36   24.2%   HOME-NET-1
      AS1727       113       77       36   31.9%   MRMS-WEST
      AS3549       147      112       35   23.8%   Frontier GlobalCenter
      AS11127      117       82       35   29.9%   UNKNOWN
      AS8013       124       91       33   26.6%   PSINET-CA
      AS3737        96       63       33   34.4%   PenTeleData Inc. (ASN-PTD)
      AS8390        42       10       32   76.2%   Global One Communications and Inf
      AS549        192      160       32   16.7%   ONet Backbone
      AS7745        40        9       31   77.5%   BIGSKY-AS
      AS6629        62       31       31   50.0%   NOAA-AS
      AS6607        33        2       31   93.9%   HOMENET
      AS6458        32        1       31   96.9%   EMPRESSA GUATEMALTECA DE TELEC
      AS4307        32        1       31   96.9%   SVINET-1
      AS12235       32        1       31   96.9%   UNKNOWN
      
      
      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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