[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, 07 Jul 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 Jul  7 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            A summary of the last weeks changes in terms of withdrawn and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 07Jul00
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      300600	80928
      010700	80965
      020700	80894
      030700	80985
      040700	81051
      050700	81066
      060700	81438
      070700	81549
      
      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:                 7835
      
      Number of ASes announcing only one prefix:        4407 (2427 cidr, 1980 classful)
      
      Largest number of  cidr routes:                    975 announced by  AS701
      Largest number of classful routes:                1061 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 07Jul00 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS271        436      149      287   65.8%   BCnet Backbone
      AS1221       626      446      180   28.8%   TELSTRA-AS
      AS7046       535      365      170   31.8%   COQUI-NET PRTC Internet
      AS9269       187       45      142   75.9%   Hong Kong CTI
      AS9706       153       21      132   86.3%   Pusan Metropolitan City Office of
      AS705        569      448      121   21.3%   ALTERNET-AS
      AS7657       295      190      105   35.6%   The Internet Group Limited
      AS2609       125       20      105   84.0%   EUnet-TN
      AS9304       122       18      104   85.2%   Hutchcity
      AS7545       154       56       98   63.6%   TPG Internet Pty Ltd
      AS6429       211      116       95   45.0%   RDC-INTERNET
      AS577        267      180       87   32.6%   Bell Backbone
      AS174        556      469       87   15.6%   Performance Systems International
      AS7496       128       43       85   66.4%   Power Up
      AS4293       325      241       84   25.8%   Internal ASN for C&W
      AS724        228      157       71   31.1%   DLA-ASNBLOCK-AS
      AS3908       273      204       69   25.3%   Supernet, Inc.
      AS1727       159       90       69   43.4%   MRMS-WEST
      AS701       1061      996       65    6.1%   Alternet
      AS6595       110       50       60   54.5%   DODDSEUR
      AS5106        89       31       58   65.2%   AADS-COLUMBUS
      AS3749       116       58       58   50.0%   TECNET
      AS7568        81       24       57   70.4%   C.S. Communications Co., Ltd.
      AS3602       301      244       57   18.9%   Sprint Canada Inc.
      AS4740       328      273       55   16.8%   Ozemail Pty Ltd (ASN-OZEMAIL)
      AS7018       541      488       53    9.8%   AT&T WorldNet Service Backbone
      AS1785       360      311       49   13.6%   NYSERNet Backbone
      AS209        259      211       48   18.5%   Qwest Communications
      AS9557        61       16       45   73.8%   Pakistan Telecommunication Compan
      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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