[apops] The Cidr Report

  • To: nanog at merit dot edu
  • Subject: [apops] The Cidr Report
  • From: CIDR Report <cidr-report at cisco dot com>
  • Date: Fri, 16 Nov 2001 23:00:02 -0800
  • Cc: tbates at cisco dot com, eof-list at ripe dot net, apops at lists dot apnic dot net, routing-wg at ripe dot net, afnog at afnog dot org
  • Sender: owner-apops@lists.apnic.net
    • 
      This is an auto-generated mail on Fri Nov 16 23:00:00 PST 2001
      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.
      
      Check http://www.employees.org/~tbates/cidr-report.html for a daily
      update of this report.
      
      NEW: Check http://www.employees.org/~tbates/cidr-report-region.html for
      the regional version of this report.
      
      NEW: Check http://www.employees.org/~tbates/autnums.html for a complete
      list of autonomous system number to name mappings as used by the CIDR-Report.
      
      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            A summary of the last weeks changes in terms of withdrawn and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 GX Networks for giving me access to their routing tables once a
      day. 
      
      Please send any comments about this report directly to CIDR Report <cidr-report at cisco dot com>.
      
      
      
      ------------------------------------------------------------------------------
      
                              CIDR REPORT for 16Nov01
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      091101	105100
      101101	105013
      111101	104996
      121101	104919
      131101	105175
      141101	105033
      151101	105133
      161101	105107
      
      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:               8932
      
      Number of ASes announcing only one prefix:      4062 (4062 cidr, 0 classful)
      
      Largest number of  cidr routes:                  798 announced by  AS701
      Largest number of classful routes:                 0 announced by       
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 16Nov01 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS1221      1209      929      280   23.2%   Telstra Pty Ltd
      AS4151       318      181      137   43.1%   USDA 
      AS16473      202       77      125   61.9%   Bell South 
      AS577        308      190      118   38.3%   Bell Advanced Communications Inc.
      AS4293       360      256      104   28.9%   Cable & Wireless USA 
      AS4755       272      169      103   37.9%   Videsh Sanchar Nigam Ltd. Autonom
      AS2048       213      116       97   45.5%   State of Louisiana 
      AS1239       482      406       76   15.8%   Sprint 
      AS2149       387      318       69   17.8%   Performance Systems, Inc. 
      AS17557      142       74       68   47.9%   Pakistan Telecom
      AS19632       75        8       67   89.3%   Metropolis Intercom S.A. 
      AS12302      105       38       67   63.8%   MobiFon S.A.
      AS6471       133       67       66   49.6%   ENTEL CHILE S.A. 
      AS4200       126       61       65   51.6%   Apex Global Information Services,
      AS3464       160       96       64   40.0%   Alabama SuperComputer Network 
      AS4323       338      276       62   18.3%   Time Warner Communications, Inc. 
      AS16758       63        6       57   90.5%   IKON Office Solutions 
      AS13999       70       14       56   80.0%   Mega Cable S.A. de C.V. 
      AS3908       299      247       52   17.4%   Supernet, Inc. 
      AS209        295      244       51   17.3%   Qwest 
      AS17561      113       62       51   45.1%   Internet service provision to Wes
      AS376        124       74       50   40.3%   Reseau Interordinateurs Scientiqu
      AS16814       65       18       47   72.3%   NSS, S.A. 
      AS10292       73       27       46   63.0%   TELECOMMUNICATIONS OF JAMAICA 
      AS1          512      466       46    9.0%   BBN Planet 
      AS11139       92       47       45   48.9%   Cable & Wireless Dominica 
      AS10620       67       22       45   67.2%   TVCABLE BOGOTA 
      AS15290      244      201       43   17.6%   AT&T Canada IES 
      AS5416        51        9       42   82.4%   BATELCO-BH
      AS1267        68       26       42   61.8%   Infostrada S.p.A.
      
      
      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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