[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, 17 Dec 1999 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 17 12:00:00 PST 1999
      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            A summary of the last weeks changes in terms of withdrawn and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 17Dec99
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      101299	67903
      111299	67955
      121299	67842
      131299	67917
      141299	67952
      151299	68032
      161299	68301
      171299	68465
      
      Check http://www.employees.org/~tbates/cidr.plot.html for a plot
      of the table history.
      
      
      Possible Bogus Routes
      ---------------------
      
      *** Bogus 64.4.64.0/19 from AS7398
      *** Bogus 64.4.128.0/19 from AS13932
      *** Bogus 64.5.0.0/19 from AS14107
      *** Bogus 64.5.64.0/19 from AS6601
      *** Bogus 64.6.32.0/20 from AS13740
      *** Bogus 64.6.64.0/20 from AS10726
      *** Bogus 64.6.96.0/20 from AS8049
      *** Bogus 64.6.160.0/23 from AS11354
      *** Bogus 64.6.160.0/20 from AS11354
      *** Bogus 64.6.162.0/24 from AS11354
      *** Bogus 64.6.192.0/21 from AS14215
      *** Bogus 64.6.204.0/23 from AS14215
      *** Bogus 64.6.206.0/23 from AS14215
      *** Bogus 64.7.0.0/24 from AS6461
      *** Bogus 64.7.2.0/23 from AS3967
      *** Bogus 64.7.4.0/23 from AS3967
      *** Bogus 64.8.0.0/20 from AS7843
      *** Bogus 64.8.24.0/21 from AS7843
      *** Bogus 64.9.0.0/19 from AS7843
      *** Bogus 64.9.32.0/20 from AS701
      *** Bogus 64.9.48.0/20 from AS1239
      *** Bogus 64.9.128.0/18 from AS5003
      *** Bogus 64.10.0.0/16 from AS816
      *** Bogus 64.10.10.0/24 from AS705
      *** Bogus 64.14.0.0/19 from AS3967
      *** Bogus 64.14.32.0/19 from AS3967
      *** Bogus 64.14.64.0/20 from AS3967
      *** Bogus 64.14.80.0/20 from AS3967
      *** Bogus 64.14.96.0/20 from AS3967
      *** Bogus 64.14.112.0/20 from AS3967
      *** Bogus 64.14.128.0/20 from AS3967
      *** Bogus 219.91.160.0/22 from AS7742
      *** Bogus 219.91.164.0/23 from AS7742
      
      AS Summary
      ----------
      
      Number of ASes in routing system:                 6269
      
      Number of ASes announcing only one prefix:        3337 (1827 cidr, 1510 classful)
      
      Largest number of  cidr routes:                    668 announced by  AS701
      Largest number of classful routes:                 973 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 17Dec99 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS271        383      141      242   63.2%   BCnet Backbone
      AS7046       398      256      142   35.7%   UUNET-CUSTOMER
      AS2609       125       11      114   91.2%   EUnet-TN
      AS9269       133       20      113   85.0%   Hong Kong CTI
      AS1221       635      524      111   17.5%   TELSTRA-AS
      AS7657       271      175       96   35.4%   The Internet Group Limited
      AS9706       110       15       95   86.4%   Pusan Metropolitan City Office of
      AS1653       129       38       91   70.5%   SUNET Swedish University Network
      AS4293       238      150       88   37.0%   Internal ASN for C&W
      AS174        568      482       86   15.1%   Performance Systems International
      AS7496       114       38       76   66.7%   Power Up
      AS3749       136       62       74   54.4%   TECNET
      AS4449        91       19       72   79.1%   ASN-GALSTAR
      AS705        215      145       70   32.6%   ALTERNET-AS
      AS4200       172      105       67   39.0%   AGIS (Apex Global Information Ser
      AS577        234      173       61   26.1%   Bell Canada Backbone
      AS816        249      190       59   23.7%   UUNET Canada (ASN-UUNETCA-AS4)
      AS4740       347      289       58   16.7%   Ozemail Pty Ltd (ASN-OZEMAIL)
      AS209        341      287       54   15.8%   Qwest Communications
      AS684         92       46       46   50.0%   Manitoba Regional Network Backbon
      AS9304        64       19       45   70.3%   Hutchcity
      AS701        973      932       41    4.2%   Alternet
      AS1          520      479       41    7.9%   GTE Internetworking
      AS6528        45        7       38   84.4%   WORLD-LYNX
      AS7029        77       40       37   48.1%   ALLTELNET
      AS8013       130       94       36   27.7%   PSINET-CA
      AS4755       105       69       36   34.3%   Videsh Sanchar Nigam Ltd. India
      AS11127      114       79       35   30.7%   UNKNOWN
      AS3737        98       65       33   33.7%   PenTeleData Inc. (ASN-PTD)
      AS549        193      161       32   16.6%   ONet Backbone
      
      
      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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