[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, 15 Dec 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 Dec 15 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            A summary of the last weeks changes in terms of withdrawn and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 15Dec00
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      081200	95404
      091200	95823
      101200	95806
      111200	95907
      121200	95679
      131200	95592
      141200	95583
      151200	95822
      
      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:                 9359
      
      Number of ASes announcing only one prefix:        5425 (3034 cidr, 2391 classful)
      
      Largest number of  cidr routes:                   1190 announced by  AS705
      Largest number of classful routes:                1678 announced by AS1221
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 15Dec00 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS1221      1678     1238      440   26.2%   TELSTRA-AS
      AS2563       264       82      182   68.9%   KoRean Education Network
      AS701       1593     1434      159   10.0%   Alternet
      AS271        284      131      153   53.9%   BCnet Backbone
      AS9269       167       48      119   71.3%   Hong Kong CTI
      AS7545       166       50      116   69.9%   TPG Internet Pty Ltd
      AS8013       455      349      106   23.3%   PSINET-CA
      AS6595       162       63       99   61.1%   DODDSEUR
      AS7657       277      188       89   32.1%   The Internet Group Limited
      AS13999       94        6       88   93.6%   UNKNOWN
      AS705        326      242       84   25.8%   ALTERNET-AS
      AS4755       189      105       84   44.4%   Videsh Sanchar Nigam Ltd. India
      AS174        530      449       81   15.3%   Performance Systems International
      AS4293       340      260       80   23.5%   Internal ASN for C&W
      AS7496       100       23       77   77.0%   Power Up
      AS7046       328      251       77   23.5%   UUNET-CUSTOMER
      AS4151       282      208       74   26.2%   USDA Internet Access Network
      AS724        243      170       73   30.0%   DLA-ASNBLOCK-AS
      AS1727       172       99       73   42.4%   MRMS-WEST
      AS3908       236      164       72   30.5%   Supernet, Inc.
      AS1942       137       65       72   52.6%   FR-CICG-GRENOBLE
      AS577        242      171       71   29.3%   Bell Backbone
      AS7018       594      528       66   11.1%   AT&T WorldNet Service Backbone
      AS5106       101       37       64   63.4%   AADS-COLUMBUS
      AS3749       123       59       64   52.0%   TECNET
      AS226        167      104       63   37.7%   USC/Information Sciences Institut
      AS3602       307      249       58   18.9%   Sprint Canada Inc.
      AS2548       366      308       58   15.8%   DIGEX-AS
      AS16758       63        6       57   90.5%   UNKNOWN
      AS376        133       77       56   42.1%   RISQ
      
      
      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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