[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, 21 Apr 2000 12:00:03 -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 Apr 21 12:00:01 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            A summary of the last weeks changes in terms of withdrawn and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 21Apr00
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      060400	74813
      070400	75152
      080400	75151
      090400	75137
      100400	75215
      110400	75403
      120400	75730
      130400	75919
      
      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:                 4983
      
      Number of ASes announcing only one prefix:        1838 (0 cidr, 1838 classful)
      
      Largest number of  cidr routes:                      0 announced by       
      Largest number of classful routes:                1043 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 21Apr00 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS271        351      131      220   62.7%   BCnet Backbone
      AS7046       474      322      152   32.1%   COQUI-NET PRTC Internet
      AS9269       163       26      137   84.0%   Hong Kong CTI
      AS9706       153       30      123   80.4%   Pusan Metropolitan City Office of
      AS1221       468      357      111   23.7%   TELSTRA-AS
      AS2609       124       17      107   86.3%   EUnet-TN
      AS7657       268      170       98   36.6%   The Internet Group Limited
      AS7545       160       65       95   59.4%   TPG Internet Pty Ltd
      AS705        309      214       95   30.7%   ALTERNET-AS
      AS4293       305      215       90   29.5%   Internal ASN for C&W
      AS174        558      470       88   15.8%   Performance Systems International
      AS7496       126       39       87   69.0%   Power Up
      AS6429       205      121       84   41.0%   RDC-INTERNET
      AS7029       153       72       81   52.9%   ALLTELNET
      AS9304       105       29       76   72.4%   Hutchcity
      AS577        250      174       76   30.4%   Bell Backbone
      AS209        458      385       73   15.9%   Qwest Communications
      AS9557        80       15       65   81.2%   Pakistan Telecommunication Compan
      AS1727       144       80       64   44.4%   MRMS-WEST
      AS724        205      143       62   30.2%   DLA-ASNBLOCK-AS
      AS3602       309      247       62   20.1%   Sprint Canada Inc.
      AS7260       109       49       60   55.0%   NORLIGHT
      AS701       1043      983       60    5.8%   Alternet
      AS7018       518      459       59   11.4%   AT&T WorldNet Service Backbone
      AS3749       114       56       58   50.9%   TECNET
      AS816        333      277       56   16.8%   UUNET Canada (ASN-UUNETCA-AS4)
      AS4740       337      281       56   16.6%   Ozemail Pty Ltd (ASN-OZEMAIL)
      AS6595       101       48       53   52.5%   DODDSEUR
      AS7568        68       18       50   73.5%   C.S. Communications Co., Ltd.
      AS2563       125       76       49   39.2%   KoRean Education Network
      
      
      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
      *             APOPS: Asia Pacific Operations Forum              *
      * To unsubscribe: send "unsubscribe" to apops-request at apnic dot net *