[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, 28 Aug 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 Aug 28 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            A summary of the last weeks changes in terms of withdrawn and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 28Aug98
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      210898	52842
      220898	52964
      230898	52773
      240898	53047
      250898	53127
      260898	53242
      270898	53089
      280898	53151
      
      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:                 3922
      
      Number of ASes announcing only one prefix:        1901 (987 cidr, 914 classful)
      
      Largest number of  cidr routes:                    346 announced by AS3561
      Largest number of classful routes:                1175 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 28Aug98 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS3602       552      320      232   42.0%   Sprint Canada Inc.
      AS701       1175      949      226   19.2%   Alternet
      AS271        351      153      198   56.4%   BCnet Backbone
      AS4293       444      258      186   41.9%   IMCI
      AS2493       384      227      157   40.9%   iSTAR Internet, Inc.
      AS3749       223       67      156   70.0%   TECNET
      AS174        701      576      125   17.8%   Performance Systems International
      AS4200       193       99       94   48.7%   AGIS (Apex Global Information Ser
      AS5668       131       42       89   67.9%   Century Telephone Inc.
      AS2685       242      161       81   33.5%   IBM Global Network - US
      AS4755       124       47       77   62.1%   Videsh Sanchar Nigam Ltd. India
      AS4740       421      346       75   17.8%   Ozemail Pty Ltd (ASN-OZEMAIL)
      AS3221       112       42       70   62.5%   EENet Autonomous System
      AS7046       234      168       66   28.2%   UUNET-CUSTOMER
      AS3493       242      176       66   27.3%   INTERLINK
      AS3804       215      157       58   27.0%   Bell Solutions
      AS3403       182      127       55   30.2%   TIAC
      AS10928      101       46       55   54.5%   UNKNOWN
      AS549        205      151       54   26.3%   ONet Backbone
      AS8517       124       72       52   41.9%   ULAKNET-ASN
      AS719        464      415       49   10.6%   LANLINK autonomous system
      AS6335        69       20       49   71.0%   NTRNET
      AS72          87       39       48   55.2%   Schlumberger Information Network
      AS1239       551      503       48    8.7%   SprintLink Backbone
      AS803         78       34       44   56.4%   SaskNet Backbone
      AS4539        68       27       41   60.3%   NETROPOLIS
      AS852        158      118       40   25.3%   AGT Advance Communication
      AS6181        66       26       40   60.6%   FUSE-NET
      AS7122       119       80       39   32.8%   MTS ADVANCED Network Policy
      AS4614        68       32       36   52.9%   Asiaonline Hong Kong
      
      
      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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