[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, 12 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 12 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            A summary of the last weeks changes in terms of withdrawn and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 12Jun98
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      050698	50625
      060698	51451
      070698	51501
      080698	51191
      090698	51499
      100698	51418
      110698	51862
      120698	51404
      
      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:                 3625
      
      Number of ASes announcing only one prefix:        1735 (917 cidr, 818 classful)
      
      Largest number of  cidr routes:                    357 announced by AS3561
      Largest number of classful routes:                1128 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 12Jun98 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS4293       463      240      223   48.2%   IMCI
      AS2493       501      291      210   41.9%   iSTAR Internet, Inc.
      AS3602       506      313      193   38.1%   Sprint Canada Inc.
      AS1740       545      353      192   35.2%   CERFnet
      AS701       1128      939      189   16.8%   Alternet
      AS3749       220       65      155   70.5%   TECNET
      AS174        728      583      145   19.9%   Performance Systems International
      AS4262       213      125       88   41.3%   CERFnet Los Angeles SMDS
      AS3221       112       42       70   62.5%   EENet Autonomous System
      AS4755        98       31       67   68.4%   Videsh Sanchar Nigam Ltd. India
      AS10928      109       43       66   60.6%   UNKNOWN
      AS7046       207      142       65   31.4%   UUNET-CUSTOMER
      AS5668       114       49       65   57.0%   Century Telephone Inc.
      AS3804       206      144       62   30.1%   Bell Solutions
      AS271        113       54       59   52.2%   BCnet Backbone
      AS1221       289      233       56   19.4%   AARNET-AS
      AS549        205      152       53   25.9%   ONet Backbone
      AS4740       375      323       52   13.9%   ASN-OZEMAIL (Ozemail Pty Ltd)
      AS4539        74       24       50   67.6%   NETROPOLIS
      AS72          85       37       48   56.5%   Schlumberger Information Network
      AS6335        68       20       48   70.6%   NTRNET
      AS8517       122       75       47   38.5%   ULAKNET-ASN
      AS4200       148      101       47   31.8%   AGIS (Apex Global Information Ser
      AS1239       541      494       47    8.7%   SprintLink Backbone
      AS852        159      118       41   25.8%   AGT Advance Communication
      AS7657       122       84       38   31.1%   The Internet Group Limited
      AS762        115       78       37   32.2%   WELLFLEET-AS
      AS719        443      406       37    8.4%   LANLINK autonomous system
      AS6181        65       28       37   56.9%   FUSE-NET
      AS803         72       36       36   50.0%   SaskNet 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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