[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, 31 Mar 2000 12:00:02 -0800
  • 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 Mar 31 12:00:00 PST 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            A summary of the last weeks changes in terms of withdrawn and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 31Mar00
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      240300	74204
      250300	74230
      260300	74283
      270300	74264
      280300	74374
      290300	74495
      300300	74917
      310300	74847
      
      Check http://www.employees.org/~tbates/cidr.plot.html for a plot
      of the table history.
      
      
      Possible Bogus Routes
      ---------------------
      
      *** Bogus 65.45.0.0/19 from AS10585
      *** Bogus 219.91.160.0/22 from AS7742
      *** Bogus 219.91.164.0/23 from AS7742
      
      AS Summary
      ----------
      
      Number of ASes in routing system:                 7078
      
      Number of ASes announcing only one prefix:        3919 (2134 cidr, 1785 classful)
      
      Largest number of  cidr routes:                    972 announced by  AS701
      Largest number of classful routes:                1040 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 31Mar00 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS271        437      153      284   65.0%   BCnet Backbone
      AS1221       699      535      164   23.5%   TELSTRA-AS
      AS7046       460      315      145   31.5%   COQUI-NET PRTC Internet
      AS9269       159       27      132   83.0%   Hong Kong CTI
      AS9706       151       25      126   83.4%   Pusan Metropolitan City Office of
      AS2609       123       22      101   82.1%   EUnet-TN
      AS7657       266      170       96   36.1%   The Internet Group Limited
      AS7545       155       62       93   60.0%   TPG Internet Pty Ltd
      AS705        307      217       90   29.3%   ALTERNET-AS
      AS174        566      477       89   15.7%   Performance Systems International
      AS7496       123       38       85   69.1%   Power Up
      AS4293       290      205       85   29.3%   Internal ASN for C&W
      AS7029       160       78       82   51.2%   ALLTELNET
      AS6429       202      121       81   40.1%   RDC-INTERNET
      AS9304       107       27       80   74.8%   Hutchcity
      AS577        248      172       76   30.6%   Bell Backbone
      AS209        437      369       68   15.6%   Qwest Communications
      AS9557        80       15       65   81.2%   Pakistan Telecommunication Compan
      AS3602       299      237       62   20.7%   Sprint Canada Inc.
      AS701       1040      981       59    5.7%   Alternet
      AS3749       120       61       59   49.2%   TECNET
      AS7260       108       50       58   53.7%   NORLIGHT
      AS4740       339      281       58   17.1%   Ozemail Pty Ltd (ASN-OZEMAIL)
      AS1727       139       81       58   41.7%   MRMS-WEST
      AS724        196      140       56   28.6%   DLA-ASNBLOCK-AS
      AS816        329      275       54   16.4%   UUNET Canada (ASN-UUNETCA-AS4)
      AS7568        66       19       47   71.2%   C.S. Communications Co., Ltd.
      AS6595        88       42       46   52.3%   DODDSEUR
      AS684         85       40       45   52.9%   Manitoba Regional Network Backbon
      AS5106        73       29       44   60.3%   AADS-COLUMBUS
      
      
      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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