[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, 20 Oct 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 Oct 20 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            A summary of the last weeks changes in terms of withdrawn and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 20Oct00
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      131000	88713
      141000	88736
      151000	88773
      161000	88779
      171000	88976
      181000	89084
      191000	89049
      201000	89411
      
      Check http://www.employees.org/~tbates/cidr.plot.html for a plot
      of the table history.
      
      
      Possible Bogus Routes
      ---------------------
      
      
      AS Summary
      ----------
      
      Number of ASes in routing system:                 8803
      
      Number of ASes announcing only one prefix:        5049 (2823 cidr, 2226 classful)
      
      Largest number of  cidr routes:                    930 announced by  AS701
      Largest number of classful routes:                1133 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 20Oct00 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS271        431      152      279   64.7%   BCnet Backbone
      AS1221       590      439      151   25.6%   TELSTRA-AS
      AS816        595      454      141   23.7%   UUNET Canada (ASN-UUNETCA-AS4)
      AS9269       177       46      131   74.0%   Hong Kong CTI
      AS2609       128        8      120   93.8%   EUnet-TN
      AS9304       130       17      113   86.9%   Hutchcity
      AS6429       222      112      110   49.5%   FirstCom Internet
      AS7545       159       55      104   65.4%   TPG Internet Pty Ltd
      AS8013       467      364      103   22.1%   PSINET-CA
      AS7046       355      254      101   28.5%   UUNET-CUSTOMER
      AS4755       200      101       99   49.5%   Videsh Sanchar Nigam Ltd. India
      AS705        356      259       97   27.2%   ALTERNET-AS
      AS7657       313      220       93   29.7%   The Internet Group Limited
      AS7496       126       35       91   72.2%   Power Up
      AS174        539      453       86   16.0%   Performance Systems International
      AS4293       341      259       82   24.0%   Internal ASN for C&W
      AS13999       91        9       82   90.1%   UNKNOWN
      AS701       1133     1052       81    7.1%   Alternet
      AS6595       137       56       81   59.1%   DODDSEUR
      AS3908       251      172       79   31.5%   Supernet, Inc.
      AS577        249      176       73   29.3%   Bell Backbone
      AS724        220      153       67   30.5%   DLA-ASNBLOCK-AS
      AS7018       574      508       66   11.5%   AT&T WorldNet Service Backbone
      AS5106       100       37       63   63.0%   AADS-COLUMBUS
      AS226        168      106       62   36.9%   USC/Information Sciences Institut
      AS3749       121       61       60   49.6%   TECNET
      AS16758       63        6       57   90.5%   UNKNOWN
      AS8151       181      126       55   30.4%   UNINET-MX
      AS8895        97       43       54   55.7%   Saudi Arabia AS
      AS7568        78       24       54   69.2%   C.S. Communications Co., Ltd.
      
      
      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 *