[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, 08 Dec 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 Dec  8 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            A summary of the last weeks changes in terms of withdrawn and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 08Dec00
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      011200	93154
      021200	93136
      031200	93184
      041200	95348
      051200	95118
      061200	95808
      071200	95387
      081200	95404
      
      Check http://www.employees.org/~tbates/cidr.plot.html for a plot
      of the table history.
      
      
      Possible Bogus Routes
      ---------------------
      
      *** Bogus 91.16.23.0/24 from AS11770
      *** Bogus 219.219.219.0 from AS2563
      
      AS Summary
      ----------
      
      Number of ASes in routing system:                 9339
      
      Number of ASes announcing only one prefix:        5413 (3047 cidr, 2366 classful)
      
      Largest number of  cidr routes:                   1001 announced by  AS701
      Largest number of classful routes:                1708 announced by AS1221
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 08Dec00 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS1221      1708     1240      468   27.4%   TELSTRA-AS
      AS2563       348      114      234   67.2%   KoRean Education Network
      AS271        289      133      156   54.0%   BCnet Backbone
      AS701       1534     1390      144    9.4%   Alternet
      AS9269       167       48      119   71.3%   Hong Kong CTI
      AS7545       166       50      116   69.9%   TPG Internet Pty Ltd
      AS2609       115       11      104   90.4%   EUnet-TN
      AS6595       164       63      101   61.6%   DODDSEUR
      AS8013       453      353      100   22.1%   PSINET-CA
      AS7657       285      194       91   31.9%   The Internet Group Limited
      AS13999       94        6       88   93.6%   UNKNOWN
      AS705        331      247       84   25.4%   ALTERNET-AS
      AS4293       344      262       82   23.8%   Internal ASN for C&W
      AS174        526      445       81   15.4%   Performance Systems International
      AS4755       194      114       80   41.2%   Videsh Sanchar Nigam Ltd. India
      AS7496       102       25       77   75.5%   Power Up
      AS7046       326      250       76   23.3%   UUNET-CUSTOMER
      AS4151       285      209       76   26.7%   USDA Internet Access Network
      AS3908       238      166       72   30.3%   Supernet, Inc.
      AS1942       136       64       72   52.9%   FR-CICG-GRENOBLE
      AS577        243      172       71   29.2%   Bell Backbone
      AS724        224      158       66   29.5%   DLA-ASNBLOCK-AS
      AS7018       594      528       66   11.1%   AT&T WorldNet Service Backbone
      AS226        169      104       65   38.5%   USC/Information Sciences Institut
      AS5106       101       37       64   63.4%   AADS-COLUMBUS
      AS1727       153       91       62   40.5%   MRMS-WEST
      AS3749       116       56       60   51.7%   TECNET
      AS3602       306      248       58   19.0%   Sprint Canada Inc.
      AS2548       369      311       58   15.7%   DIGEX-AS
      AS16758       63        6       57   90.5%   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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