[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, 28 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 28 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            A summary of the last weeks changes in terms of withdrawn and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 28Jul00
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      210700	82529
      220700	82534
      230700	82499
      240700	82582
      250700	82822
      260700	82702
      270700	82843
      280700	82898
      
      Check http://www.employees.org/~tbates/cidr.plot.html for a plot
      of the table history.
      
      
      Possible Bogus Routes
      ---------------------
      
      *** Bogus 65.0.0.0/14 from AS6172
      
      AS Summary
      ----------
      
      Number of ASes in routing system:                 8021
      
      Number of ASes announcing only one prefix:        4513 (2506 cidr, 2007 classful)
      
      Largest number of  cidr routes:                    943 announced by  AS701
      Largest number of classful routes:                1078 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 28Jul00 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS271        435      152      283   65.1%   BCnet Backbone
      AS7046       643      397      246   38.3%   COQUI-NET PRTC Internet
      AS1221       583      418      165   28.3%   TELSTRA-AS
      AS9706       155       25      130   83.9%   Pusan Metropolitan City Office of
      AS2609       128        8      120   93.8%   EUnet-TN
      AS9304       125       16      109   87.2%   Hutchcity
      AS7657       300      192      108   36.0%   The Internet Group Limited
      AS7545       157       58       99   63.1%   TPG Internet Pty Ltd
      AS9269       155       62       93   60.0%   Hong Kong CTI
      AS6429       208      115       93   44.7%   RDC-INTERNET
      AS7496       126       38       88   69.8%   Power Up
      AS4293       335      248       87   26.0%   Internal ASN for C&W
      AS577        256      171       85   33.2%   Bell Backbone
      AS174        535      456       79   14.8%   Performance Systems International
      AS705        326      249       77   23.6%   ALTERNET-AS
      AS1727       172       99       73   42.4%   MRMS-WEST
      AS724        224      153       71   31.7%   DLA-ASNBLOCK-AS
      AS3908       244      178       66   27.0%   Supernet, Inc.
      AS4755       166      101       65   39.2%   Videsh Sanchar Nigam Ltd. India
      AS701       1078     1014       64    5.9%   Alternet
      AS6595       116       52       64   55.2%   DODDSEUR
      AS5106        98       36       62   63.3%   AADS-COLUMBUS
      AS3749       117       58       59   50.4%   TECNET
      AS7018       546      488       58   10.6%   AT&T WorldNet Service Backbone
      AS7568        80       23       57   71.2%   C.S. Communications Co., Ltd.
      AS3602       299      242       57   19.1%   Sprint Canada Inc.
      AS4740       325      272       53   16.3%   Ozemail Pty Ltd (ASN-OZEMAIL)
      AS11252       90       37       53   58.9%   Idaho State University
      AS7993        78       28       50   64.1%   Global One Communications
      AS209        267      220       47   17.6%   Qwest Communications
      
      
      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
      *             APOPS: Asia Pacific Operations Forum              *
      * To unsubscribe: send "unsubscribe" to apops-request at apnic dot net *