[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, 07 Aug 1998 12:00:02 -0700
  • Cc: tbates at cisco dot com, eof-list at ripe dot net, apops at apnic dot net, routing-wg at ripe dot net
  • Sender: owner-apops@apnic.net
    • 
      This is an auto-generated mail on Fri Aug  7 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            A summary of the last weeks changes in terms of withdrawn and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 07Aug98
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      310798	52941
      010898	52807
      020898	52843
      030898	52915
      040898	52856
      050898	52828
      060898	52871
      070898	52903
      
      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:                 3804
      
      Number of ASes announcing only one prefix:        1844 (971 cidr, 873 classful)
      
      Largest number of  cidr routes:                    343 announced by AS3561
      Largest number of classful routes:                1137 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 07Aug98 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS3602       551      320      231   41.9%   Sprint Canada Inc.
      AS701       1137      934      203   17.9%   Alternet
      AS271        333      143      190   57.1%   BCnet Backbone
      AS4293       438      254      184   42.0%   IMCI
      AS2493       406      240      166   40.9%   iSTAR Internet, Inc.
      AS3749       222       69      153   68.9%   TECNET
      AS174        719      587      132   18.4%   Performance Systems International
      AS4200       192      100       92   47.9%   AGIS (Apex Global Information Ser
      AS2685       243      157       86   35.4%   IBM Global Network - US
      AS5668       129       47       82   63.6%   Century Telephone Inc.
      AS4755       121       45       76   62.8%   Videsh Sanchar Nigam Ltd. India
      AS3221       112       42       70   62.5%   EENet Autonomous System
      AS7046       226      160       66   29.2%   UNKNOWN
      AS3804       220      155       65   29.5%   Bell Solutions
      AS4740       403      342       61   15.1%   ASN-OZEMAIL (Ozemail Pty Ltd)
      AS10928      101       46       55   54.5%   UNKNOWN
      AS3403       181      127       54   29.8%   TIAC
      AS549        204      153       51   25.0%   ONet Backbone
      AS8517       122       72       50   41.0%   ULAKNET-ASN
      AS6335        68       19       49   72.1%   NTRNET
      AS72          85       37       48   56.5%   Schlumberger Information Network
      AS719        459      412       47   10.2%   LANLINK autonomous system
      AS1239       532      485       47    8.8%   SprintLink Backbone
      AS4539        70       27       43   61.4%   NETROPOLIS
      AS1785       298      255       43   14.4%   NYSERNet Backbone
      AS852        156      116       40   25.6%   AGT Advance Communication
      AS6181        66       26       40   60.6%   FUSE-NET
      AS10921       57       19       38   66.7%   KIHNETWORK
      AS762        117       80       37   31.6%   WELLFLEET-AS
      AS10459       47       10       37   78.7%   WANSASN
      
      
      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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