[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, 03 Nov 2000 12:00:04 -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 Nov  3 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            A summary of the last weeks changes in terms of withdrawn and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 03Nov00
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      281000	89474
      291000	89460
      291000	89478
      301000	89458
      311000	89649
      011100	90189
      021100	91627
      031100	90444
      
      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:                 8951
      
      Number of ASes announcing only one prefix:        5138 (2860 cidr, 2278 classful)
      
      Largest number of  cidr routes:                    921 announced by  AS701
      Largest number of classful routes:                1178 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 03Nov00 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS271        431      150      281   65.2%   BCnet Backbone
      AS1221       604      450      154   25.5%   TELSTRA-AS
      AS2609       128        8      120   93.8%   EUnet-TN
      AS4755       201      101      100   49.8%   Videsh Sanchar Nigam Ltd. India
      AS174        538      453       85   15.8%   Performance Systems International
      AS4293       340      258       82   24.1%   Internal ASN for C&W
      AS13999       91        9       82   90.1%   UNKNOWN
      AS3908       252      173       79   31.3%   Supernet, Inc.
      AS577        244      174       70   28.7%   Bell Backbone
      AS5106       101       37       64   63.4%   AADS-COLUMBUS
      AS3749       119       58       61   51.3%   TECNET
      AS226        167      106       61   36.5%   USC/Information Sciences Institut
      AS16758       63        6       57   90.5%   UNKNOWN
      AS376        132       76       56   42.4%   RISQ
      AS1727       135       82       53   39.3%   MRMS-WEST
      AS11252       90       37       53   58.9%   Idaho State University
      AS3602       294      242       52   17.7%   Sprint Canada Inc.
      AS5102        74       24       50   67.6%   AADS-CHAMPAIGN
      AS4740       312      262       50   16.0%   Ozemail Pty Ltd (ASN-OZEMAIL)
      AS6429       149      101       48   32.2%   FirstCom Internet
      AS1          631      583       48    7.6%   GTE Internetworking
      AS209        272      227       45   16.5%   Qwest Communications
      AS549        192      148       44   22.9%   ONet Backbone
      AS1239       483      441       42    8.7%   SprintLink Backbone
      AS6082       145      105       40   27.6%   HarvardNet, Inc
      AS4151        89       50       39   43.8%   USDA Internet Access Network
      AS12235       43        4       39   90.7%   Cove Software Systems Inc
      AS1267        60       23       37   61.7%   Infostrada S.p.A.
      AS14          50       14       36   72.0%   Columbia University in the City o
      AS637         55       20       35   63.6%   PENS-NET-AS
      
      
      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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