[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, 29 Jun 2001 23:00:02 -0700
  • Cc: tbates at cisco dot com, eof-list at ripe dot net, apops at apnic dot net, routing-wg at ripe dot net, afnog at afnog dot org
  • Sender: owner-apops@lists.apnic.net
    • 
      This is an auto-generated mail on Fri Jun 29 23:00:01 PDT 2001
      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            A summary of the last weeks changes in terms of withdrawn and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 GX Networks 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 29Jun01
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      220601	101078
      230601	100823
      240601	100985
      250601	101071
      260601	101116
      270601	100751
      280601	100644
      290601	100654
      
      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:                11095
      
      Number of ASes announcing only one prefix:        6545 (3732 cidr, 2813 classful)
      
      Largest number of  cidr routes:                   1029 announced by  AS701
      Largest number of classful routes:                1429 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 29Jun01 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS1221      1366     1019      347   25.4%   TELSTRA-AS
      AS701       1429     1216      213   14.9%   Alternet
      AS4293       398      283      115   28.9%   part of AS assignment AS4287 - AS
      AS6595       157       58       99   63.1%   DoD Education Activity Network As
      AS705        237      141       96   40.5%   part of AS assignment AS701 - AS7
      AS6429       202      107       95   47.0%   ATT LA Internet Chile
      AS7018       734      648       86   11.7%   AT&T WorldNet Service Backbone
      AS4755       211      129       82   38.9%   Videsh Sanchar Nigam Ltd. Autonom
      AS4151       159       77       82   51.6%   part of AS assignment AS4151 - AS
      AS8013       300      220       80   26.7%   PSINet Ltd. Canada 
      AS13999       98       18       80   81.6%   Mega Cable S.A. de C.V. 
      AS577        246      173       73   29.7%   Bell Advanced Communications Inc.
      AS724        238      166       72   30.3%   part of AS assignment AS721 - AS7
      AS6471       113       50       63   55.8%   ENTEL CHILE S.A. 
      AS7046       306      245       61   19.9%   UUNET Technologies, Inc. 
      AS3464       151       90       61   40.4%   Alabama Research and Education Ne
      AS1          585      526       59   10.1%   GTE Internetworking
      AS16758       63        6       57   90.5%   IKON Office Solutions 
      AS1239       446      391       55   12.3%   SprintLink Backbone
      AS226        144       91       53   36.8%   Los Nettos
      AS6413        65       13       52   80.0%   Southern Online Systems, Inc. 
      AS3908       207      155       52   25.1%   Supernet, Inc.
      AS17561      112       61       51   45.5%   Internet service provision to Wes
      AS9842        54        5       49   90.7%   Lotte Data Communication Company
      AS852        211      163       48   22.7%   Telus Advanced Communications 
      AS5106        82       34       48   58.5%   Ameritech Advanced Data Services,
      AS2149       300      252       48   16.0%   PSINET-2
      AS15290      237      190       47   19.8%   AT&T Canada IES
      AS855        143       97       46   32.2%   part of AS assignment AS853 - AS1
      AS3602       226      180       46   20.4%   Sprint Canada Inc.
      
      
      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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