[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, 01 May 1998 12:00:01 -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 May  1 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            A summary of the last weeks changes in terms of withdrawn and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 01May98
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      240498	51504
      250498	51831
      260498	51362
      270498	51498
      280498	51499
      290498	51512
      300498	51446
      010598	51507
      
      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:                 3510
      
      Number of ASes announcing only one prefix:        1656 (861 cidr, 795 classful)
      
      Largest number of  cidr routes:                    371 announced by AS3561
      Largest number of classful routes:                1116 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 01May98 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS2493       638      396      242   37.9%   iSTAR Internet, Inc.
      AS4293       442      218      224   50.7%   IMCI
      AS816        678      459      219   32.3%   UUNET Canada (ASN-UUNETCA-AS4)
      AS174        798      615      183   22.9%   Performance Systems International
      AS701       1116      938      178   15.9%   Alternet
      AS3602       482      309      173   35.9%   Sprint Canada Inc.
      AS3749       219       64      155   70.8%   TECNET
      AS8505       156       30      126   80.8%   Middle East Technical University 
      AS7046       256      151      105   41.0%   UUNET-CUSTOMER
      AS5668       118       46       72   61.0%   Century Telephone Inc.
      AS2048       162       90       72   44.4%   LaNet
      AS3221       110       41       69   62.7%   EENet Autonomous System
      AS10928      106       46       60   56.6%   UNKNOWN
      AS271        111       52       59   53.2%   BCnet Backbone
      AS4755        90       32       58   64.4%   Videsh Sanchar Nigam Ltd. India
      AS3804       200      142       58   29.0%   Bell Solutions
      AS1239       555      500       55    9.9%   SprintLink Backbone
      AS549        210      156       54   25.7%   ONet Backbone
      AS1221       275      224       51   18.5%   AARNET-AS
      AS72          84       36       48   57.1%   Schlumberger Information Network
      AS4763       123       76       47   38.2%   Telstra New Zealand
      AS7545       104       58       46   44.2%   TPG Internet Pty Ltd
      AS684         95       53       42   44.2%   Manitoba Regional Network Backbon
      AS852        157      117       40   25.5%   AGT Advance Communication
      AS4740       365      325       40   11.0%   ASN-OZEMAIL (Ozemail Pty Ltd)
      AS4200       131       93       38   29.0%   AGIS (Apex Global Information Ser
      AS3493       163      125       38   23.3%   INTERLINK
      AS6392        69       32       37   53.6%   MidWest Communications, Inc.
      AS803         72       36       36   50.0%   SaskNet Backbone
      AS6335        63       27       36   57.1%   NTRNET
      
      
      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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