[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, 04 Aug 2000 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@lists.apnic.net
    • 
      This is an auto-generated mail on Fri Aug  4 12:00:00 PDT 2000
      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            A summary of the last weeks changes in terms of withdrawn and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 04Aug00
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      280700	82898
      290700	83084
      300700	83013
      310700	83117
      010800	83063
      020800	83127
      030800	83303
      040800	83610
      
      Check http://www.employees.org/~tbates/cidr.plot.html for a plot
      of the table history.
      
      
      Possible Bogus Routes
      ---------------------
      
      *** Bogus 65.0.0.0/14 from AS6172
      *** Bogus 217.8.32.0/20 from AS3220
      
      AS Summary
      ----------
      
      Number of ASes in routing system:                 8086
      
      Number of ASes announcing only one prefix:        4539 (2516 cidr, 2023 classful)
      
      Largest number of  cidr routes:                    929 announced by  AS701
      Largest number of classful routes:                1086 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 04Aug00 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS271        435      154      281   64.6%   BCnet Backbone
      AS7046       559      368      191   34.2%   COQUI-NET PRTC Internet
      AS1221       587      433      154   26.2%   TELSTRA-AS
      AS9706       153       30      123   80.4%   Pusan Metropolitan City Office of
      AS2609       128        8      120   93.8%   EUnet-TN
      AS9304       125       16      109   87.2%   Hutchcity
      AS7657       300      192      108   36.0%   The Internet Group Limited
      AS9269       158       57      101   63.9%   Hong Kong CTI
      AS7545       157       58       99   63.1%   TPG Internet Pty Ltd
      AS6429       208      114       94   45.2%   FirstCom Internet
      AS7496       126       38       88   69.8%   Power Up
      AS174        553      467       86   15.6%   Performance Systems International
      AS577        258      173       85   32.9%   Bell Backbone
      AS4293       340      255       85   25.0%   Internal ASN for C&W
      AS705        325      250       75   23.1%   ALTERNET-AS
      AS724        214      146       68   31.8%   DLA-ASNBLOCK-AS
      AS1727       158       90       68   43.0%   MRMS-WEST
      AS6595       118       52       66   55.9%   DODDSEUR
      AS3908       238      172       66   27.7%   Supernet, Inc.
      AS701       1086     1022       64    5.9%   Alternet
      AS4755       160       97       63   39.4%   Videsh Sanchar Nigam Ltd. India
      AS7018       554      492       62   11.2%   AT&T WorldNet Service Backbone
      AS5106        98       36       62   63.3%   AADS-COLUMBUS
      AS816        335      275       60   17.9%   UUNET Canada (ASN-UUNETCA-AS4)
      AS3749       120       61       59   49.2%   TECNET
      AS7568        85       27       58   68.2%   C.S. Communications Co., Ltd.
      AS3602       300      242       58   19.3%   Sprint Canada Inc.
      AS4740       323      270       53   16.4%   Ozemail Pty Ltd (ASN-OZEMAIL)
      AS11252       90       37       53   58.9%   Idaho State University
      AS16758       62       10       52   83.9%   UNKNOWN
      
      
      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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