[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, 21 Dec 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 Dec 21 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            A summary of the last weeks changes in terms of withdrawn and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 21Dec01
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      141201	104473
      151201	104490
      161201	104499
      171201	104515
      181201	104565
      191201	104617
      201201	104497
      211201	104932
      
      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:              12187
      
      Number of ASes announcing only one prefix:      7366 (4178 cidr, 3188 classful)
      
      Largest number of  cidr routes:                  773 announced by  AS701
      Largest number of classful routes:              1372 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 21Dec01 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS1221      1179      909      270   22.9%   Telstra Pty Ltd
      AS701       1372     1142      230   16.8%   UUNET Technologies, Inc. 
      AS4151       292      160      132   45.2%   USDA 
      AS577        317      193      124   39.1%   Bell Advanced Communications Inc.
      AS16473      199       77      122   61.3%   Bell South 
      AS7018       795      682      113   14.2%   AT&T 
      AS6595       162       58      104   64.2%   DoD Education Activity Network As
      AS705        286      183      103   36.0%   UUNET Technologies, Inc. 
      AS852        399      302       97   24.3%   Telus Advanced Communications 
      AS17557      169       80       89   52.7%   Pakistan Telecom
      AS8010       123       38       85   69.1%   PublicNet Communications, Inc. 
      AS7046       306      225       81   26.5%   UUNET Technologies, Inc. 
      AS4755       213      132       81   38.0%   Videsh Sanchar Nigam Ltd. Autonom
      AS19632       92       11       81   88.0%   Metropolis Intercom S.A. 
      AS1239       490      411       79   16.1%   Sprint 
      AS2048       183      107       76   41.5%   State of Louisiana 
      AS12302      109       33       76   69.7%   MobiFon S.A.
      AS724        220      158       62   28.2%   DLA Systems Automation Center 
      AS703        284      222       62   21.8%   UUNET Technologies, Inc. 
      AS3464       160       98       62   38.8%   Alabama SuperComputer Network 
      AS4200       112       55       57   50.9%   Apex Global Information Services,
      AS16758       63        6       57   90.5%   IKON Office Solutions 
      AS4323       368      312       56   15.2%   Time Warner Communications, Inc. 
      AS3908       321      265       56   17.4%   Supernet, Inc. 
      AS2149       326      270       56   17.2%   Performance Systems, Inc. 
      AS13999       70       14       56   80.0%   Mega Cable S.A. de C.V. 
      AS1          514      458       56   10.9%   BBN Planet 
      AS6471       120       66       54   45.0%   ENTEL CHILE S.A. 
      AS209        297      246       51   17.2%   Qwest 
      AS855        144       94       50   34.7%   Canadian Research 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
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