[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, 30 Jun 2000 12:00:02 -0700
  • 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 Jun 30 12:00:00 PDT 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            A summary of the last weeks changes in terms of withdrawn and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 30Jun00
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      230600	80236
      240600	80187
      250600	80366
      260600	80526
      270600	80814
      280600	80884
      290600	80973
      300600	80928
      
      Check http://www.employees.org/~tbates/cidr.plot.html for a plot
      of the table history.
      
      
      Possible Bogus Routes
      ---------------------
      
      *** Bogus 65.56.64.0/21 from AS2941
      
      AS Summary
      ----------
      
      Number of ASes in routing system:                 7777
      
      Number of ASes announcing only one prefix:        4376 (2400 cidr, 1976 classful)
      
      Largest number of  cidr routes:                    964 announced by  AS701
      Largest number of classful routes:                1070 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 30Jun00 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS271        436      149      287   65.8%   BCnet Backbone
      AS1221       645      445      200   31.0%   TELSTRA-AS
      AS7046       534      360      174   32.6%   COQUI-NET PRTC Internet
      AS9269       183       55      128   69.9%   Hong Kong CTI
      AS9706       152       26      126   82.9%   Pusan Metropolitan City Office of
      AS2609       127       12      115   90.6%   EUnet-TN
      AS9304       122       18      104   85.2%   Hutchcity
      AS7657       293      190      103   35.2%   The Internet Group Limited
      AS7545       153       55       98   64.1%   TPG Internet Pty Ltd
      AS6429       210      118       92   43.8%   RDC-INTERNET
      AS174        563      471       92   16.3%   Performance Systems International
      AS7496       127       42       85   66.9%   Power Up
      AS4293       328      243       85   25.9%   Internal ASN for C&W
      AS705        343      263       80   23.3%   ALTERNET-AS
      AS701       1070      998       72    6.7%   Alternet
      AS577        250      178       72   28.8%   Bell Backbone
      AS724        229      158       71   31.0%   DLA-ASNBLOCK-AS
      AS3908       274      205       69   25.2%   Supernet, Inc.
      AS1727       152       83       69   45.4%   MRMS-WEST
      AS9557        95       28       67   70.5%   Pakistan Telecommunication Compan
      AS3602       304      245       59   19.4%   Sprint Canada Inc.
      AS6595       108       50       58   53.7%   DODDSEUR
      AS5106        88       30       58   65.9%   AADS-COLUMBUS
      AS7568        81       24       57   70.4%   C.S. Communications Co., Ltd.
      AS4740       331      275       56   16.9%   Ozemail Pty Ltd (ASN-OZEMAIL)
      AS3749       112       56       56   50.0%   TECNET
      AS7018       545      492       53    9.7%   AT&T WorldNet Service Backbone
      AS1785       361      312       49   13.6%   NYSERNet Backbone
      AS209        257      209       48   18.7%   Qwest Communications
      AS14562       80       35       45   56.2%   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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