[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, 26 Jun 1998 12:00:04 -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@apnic.net
    • 
      This is an auto-generated mail on Fri Jun 26 12:00:00 PDT 1998
      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            A summary of the last weeks changes in terms of withdrawn and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 26Jun98
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      190698	51379
      200698	51329
      210698	51500
      220698	51541
      230698	51362
      240698	51537
      250698	51460
      260698	51523
      
      Check http://www.employees.org/~tbates/cidr.plot.html for a plot
      of the table history.
      
      
      Possible Bogus Routes
      ---------------------
      
      *** Bogus 213.102.1.0 from AS3259
      *** Bogus 214.0.0.0/8 from AS568
      
      AS Summary
      ----------
      
      Number of ASes in routing system:                 3669
      
      Number of ASes announcing only one prefix:        1763 (935 cidr, 828 classful)
      
      Largest number of  cidr routes:                    350 announced by AS3561
      Largest number of classful routes:                1145 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 26Jun98 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS4293       452      247      205   45.4%   IMCI
      AS2493       488      283      205   42.0%   iSTAR Internet, Inc.
      AS3602       511      313      198   38.7%   Sprint Canada Inc.
      AS701       1145      950      195   17.0%   Alternet
      AS271        336      145      191   56.8%   BCnet Backbone
      AS3749       218       70      148   67.9%   TECNET
      AS174        725      587      138   19.0%   Performance Systems International
      AS4755       106       32       74   69.8%   Videsh Sanchar Nigam Ltd. India
      AS3218        78        7       71   91.0%   AS-RSSI
      AS7046       218      148       70   32.1%   UUNET-CUSTOMER
      AS3221       112       42       70   62.5%   EENet Autonomous System
      AS6227        96       28       68   70.8%   !nteract
      AS10928      107       42       65   60.7%   UNKNOWN
      AS5668       116       54       62   53.4%   Century Telephone Inc.
      AS3804       208      146       62   29.8%   Bell Solutions
      AS4740       382      328       54   14.1%   ASN-OZEMAIL (Ozemail Pty Ltd)
      AS3403       180      127       53   29.4%   TIAC
      AS2685       133       83       50   37.6%   IBM Global Network - US
      AS549        194      145       49   25.3%   ONet Backbone
      AS8517       120       72       48   40.0%   ULAKNET-ASN
      AS72          85       37       48   56.5%   Schlumberger Information Network
      AS6335        68       20       48   70.6%   NTRNET
      AS4539        73       25       48   65.8%   NETROPOLIS
      AS4200       145       97       48   33.1%   AGIS (Apex Global Information Ser
      AS1239       543      496       47    8.7%   SprintLink Backbone
      AS719        449      405       44    9.8%   LANLINK autonomous system
      AS852        158      116       42   26.6%   AGT Advance Communication
      AS762        118       80       38   32.2%   WELLFLEET-AS
      AS6181        65       28       37   56.9%   FUSE-NET
      AS4763       109       72       37   33.9%   Telstra New Zealand
      
      
      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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