[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, 09 Jun 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 Jun  9 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            A summary of the last weeks changes in terms of withdrawn and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 09Jun00
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      110400	75403
      120400	75730
      130400	75919
      010500	76182
      020500	76265
      070600	78743
      080600	78857
      090600	78901
      
      Check http://www.employees.org/~tbates/cidr.plot.html for a plot
      of the table history.
      
      
      Possible Bogus Routes
      ---------------------
      
      *** Bogus 65.56.64.0/21 from AS2941
      *** Bogus 109.177.9.0/24 from AS1785
      
      AS Summary
      ----------
      
      Number of ASes in routing system:                 7613
      
      Number of ASes announcing only one prefix:        4265 (2328 cidr, 1937 classful)
      
      Largest number of  cidr routes:                    907 announced by  AS701
      Largest number of classful routes:                1020 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 09Jun00 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS271        438      150      288   65.8%   BCnet Backbone
      AS9269       203       28      175   86.2%   Hong Kong CTI
      AS1221       578      405      173   29.9%   TELSTRA-AS
      AS7046       511      347      164   32.1%   COQUI-NET PRTC Internet
      AS9706       152       28      124   81.6%   Pusan Metropolitan City Office of
      AS2609       127        8      119   93.7%   EUnet-TN
      AS7545       167       68       99   59.3%   TPG Internet Pty Ltd
      AS6429       209      117       92   44.0%   RDC-INTERNET
      AS174        568      477       91   16.0%   Performance Systems International
      AS9304       115       28       87   75.7%   Hutchcity
      AS7496       127       40       87   68.5%   Power Up
      AS7657       250      165       85   34.0%   The Internet Group Limited
      AS705        339      262       77   22.7%   ALTERNET-AS
      AS4293       312      237       75   24.0%   Internal ASN for C&W
      AS577        250      178       72   28.8%   Bell Backbone
      AS724        216      148       68   31.5%   DLA-ASNBLOCK-AS
      AS9557        84       19       65   77.4%   Pakistan Telecommunication Compan
      AS1727       140       79       61   43.6%   MRMS-WEST
      AS3602       303      243       60   19.8%   Sprint Canada Inc.
      AS3749       118       59       59   50.0%   TECNET
      AS6595       104       47       57   54.8%   DODDSEUR
      AS209        431      374       57   13.2%   Qwest Communications
      AS4740       329      274       55   16.7%   Ozemail Pty Ltd (ASN-OZEMAIL)
      AS7018       530      477       53   10.0%   AT&T WorldNet Service Backbone
      AS7568        66       14       52   78.8%   C.S. Communications Co., Ltd.
      AS701       1020      968       52    5.1%   Alternet
      AS6528        48        6       42   87.5%   WORLD-LYNX
      AS6499        97       56       41   42.3%   Brooks Fiber Properties, Inc.
      AS6629        67       27       40   59.7%   NOAA-AS
      AS4755       128       88       40   31.2%   Videsh Sanchar Nigam Ltd. India
      
      
      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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