[apops] The Cidr Report

  • To: nanog at merit dot edu
  • Subject: [apops] The Cidr Report
  • From: Tony Bates <tbates at cisco dot com>
  • Date: Sun, 11 Feb 2001 20:37:24 -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 Sun Feb 11 20:37:22 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.
      
      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            A summary of the last weeks changes in terms of withdrawn and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 11Feb01
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      040201	96815
      050201	96681
      060201	96726
      070201	96978
      080201	97041
      090201	97137
      100201	96880
      110201	96509
      
      Check http://www.employees.org/~tbates/cidr.plot.html for a plot
      of the table history.
      
      
      Possible Bogus Routes
      ---------------------
      
      *** Bogus 91.16.23.0/24 from AS11770
      *** Bogus 103.22.7.0/24 from AS9768
      
      AS Summary
      ----------
      
      Number of ASes in routing system:                 9849
      
      Number of ASes announcing only one prefix:        5760 (3266 cidr, 2494 classful)
      
      Largest number of  cidr routes:                    957 announced by  AS701
      Largest number of classful routes:                1642 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 11Feb01 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS1221      1623     1207      416   25.6%   Telstra Pty Ltd
      AS701       1642     1451      191   11.6%   UUNET Technologies, Inc. 
      AS271        280      132      148   52.9%   University of British Columbia 
      AS7545       196       71      125   63.8%   ASNBLK-APNIC-AS-2-BLOCK
      AS9269       162       46      116   71.6%   ASNBLK-APNIC-AS-3-BLOCK
      AS6429       221      108      113   51.1%   RdC Internet 
      AS6595       163       62      101   62.0%   DoD Education Activity Network As
      AS8013       434      336       98   22.6%   PSINet Ltd. Canada 
      AS13999      107       10       97   90.7%   Mega Cable S.A. de C.V. 
      AS4293       374      281       93   24.9%   Cable & Wireless USA 
      AS7496       104       23       81   77.9%   ASNBLK-APNIC-AS-2-BLOCK
      AS4151       250      169       81   32.4%   USDA 
      AS705        312      234       78   25.0%   UUNET Technologies, Inc. 
      AS4755       209      137       72   34.4%   Videsh Sanchar Nigam Ltd. Autonom
      AS1942       137       65       72   52.6%   FR-CICG-GRENOBLE
      AS7018       615      544       71   11.5%   AT&T 
      AS7046       325      255       70   21.5%   UUNET Technologies, Inc. 
      AS577        236      167       69   29.2%   Bell Advanced Communications Inc.
      AS174        499      431       68   13.6%   PSINet Inc. 
      AS1727       162       94       68   42.0%   Commander Naval Surface force US 
      AS9498        88       21       67   76.1%   BHARTI BT INTERNET LTD.
      AS724        219      152       67   30.6%   DLA Systems Automation Center 
      AS5106       101       37       64   63.4%   Ameritech Advanced Data Services,
      AS3464       153       92       61   39.9%   Alabama SuperComputer Network 
      AS7657       185      125       60   32.4%   ASNBLK-APNIC-AS-2-BLOCK
      AS226        155       95       60   38.7%   Los Nettos 
      AS3749       115       57       58   50.4%   Tennessee Board of Regents 
      AS16758       63        6       57   90.5%   IKON Office Solutions 
      AS6413        67       11       56   83.6%   Southern Online Systems, Inc. 
      AS376        131       75       56   42.7%   Reseau Interordinateurs Scientiqu
      
      
      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 *