[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, 18 Feb 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 Feb 18 12:00:01 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            A summary of the last weeks changes in terms of withdrawn and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 18Feb00
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      110200	71788
      120200	71855
      130200	71752
      140200	71950
      150200	73959
      160200	72163
      170200	72085
      180200	72321
      
      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:                 6713
      
      Number of ASes announcing only one prefix:        3650 (1988 cidr, 1662 classful)
      
      Largest number of  cidr routes:                    766 announced by  AS701
      Largest number of classful routes:                1002 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 18Feb00 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS271        437      154      283   64.8%   BCnet Backbone
      AS7046       453      293      160   35.3%   UUNET-CUSTOMER
      AS1221       658      522      136   20.7%   TELSTRA-AS
      AS9269       147       24      123   83.7%   Hong Kong CTI
      AS9706       147       30      117   79.6%   Pusan Metropolitan City Office of
      AS2609       123       22      101   82.1%   EUnet-TN
      AS7657       282      183       99   35.1%   The Internet Group Limited
      AS4293       273      176       97   35.5%   Internal ASN for C&W
      AS7545       153       60       93   60.8%   TPG Internet Pty Ltd
      AS2715       153       61       92   60.1%   REDERIO-AS
      AS6429       205      118       87   42.4%   RDC-INTERNET
      AS7496       122       39       83   68.0%   Power Up
      AS174        557      474       83   14.9%   Performance Systems International
      AS705        297      216       81   27.3%   ALTERNET-AS
      AS816        392      314       78   19.9%   UUNET Canada (ASN-UUNETCA-AS4)
      AS3749       137       61       76   55.5%   TECNET
      AS9304        99       24       75   75.8%   Hutchcity
      AS577        246      173       73   29.7%   Bell Backbone
      AS3602       325      252       73   22.5%   Sprint Canada Inc.
      AS4200       168      105       63   37.5%   AGIS (Apex Global Information Ser
      AS7029       111       50       61   55.0%   ALLTELNET
      AS4740       338      280       58   17.2%   Ozemail Pty Ltd (ASN-OZEMAIL)
      AS7260       103       46       57   55.3%   NORLIGHT
      AS1727       134       79       55   41.0%   MRMS-WEST
      AS209        384      333       51   13.3%   Qwest Communications
      AS4151       100       50       50   50.0%   USDA Internet Access Network
      AS701       1002      956       46    4.6%   Alternet
      AS9557        66       21       45   68.2%   Pakistan Telecommunication Compan
      AS2652       126       81       45   35.7%   Government of Canada Telecommunic
      AS7568        60       16       44   73.3%   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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