[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, 05 Jun 1998 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@apnic.net
    • 
      This is an auto-generated mail on Fri Jun  5 12:00:00 PDT 1998
      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            A summary of the last weeks changes in terms of withdrawn and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 05Jun98
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      290598	50967
      300598	51064
      310598	50995
      010698	50998
      020698	51248
      030698	51503
      040698	51477
      050698	50625
      
      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:                 3625
      
      Number of ASes announcing only one prefix:        1747 (923 cidr, 824 classful)
      
      Largest number of  cidr routes:                    360 announced by AS3561
      Largest number of classful routes:                1108 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 05Jun98 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS4293       466      240      226   48.5%   IMCI
      AS2493       503      293      210   41.7%   iSTAR Internet, Inc.
      AS174        810      622      188   23.2%   Performance Systems International
      AS3602       499      315      184   36.9%   Sprint Canada Inc.
      AS701       1108      929      179   16.2%   Alternet
      AS3749       220       65      155   70.5%   TECNET
      AS3221       112       42       70   62.5%   EENet Autonomous System
      AS5668       115       47       68   59.1%   Century Telephone Inc.
      AS4755        97       30       67   69.1%   Videsh Sanchar Nigam Ltd. India
      AS3248       128       61       67   52.3%   VIAnet
      AS10928      108       44       64   59.3%   UNKNOWN
      AS7046       203      141       62   30.5%   UUNET-CUSTOMER
      AS6269       125       66       59   47.2%   AT&T NWCS backbone network
      AS3804       199      141       58   29.1%   Bell Solutions
      AS271        110       52       58   52.7%   BCnet Backbone
      AS549        206      153       53   25.7%   ONet Backbone
      AS4740       374      324       50   13.4%   ASN-OZEMAIL (Ozemail Pty Ltd)
      AS4539        74       24       50   67.6%   NETROPOLIS
      AS1221       274      224       50   18.2%   AARNET-AS
      AS72          85       37       48   56.5%   Schlumberger Information Network
      AS6335        68       20       48   70.6%   NTRNET
      AS1239       541      494       47    8.7%   SprintLink Backbone
      AS4200       144       99       45   31.2%   AGIS (Apex Global Information Ser
      AS852        159      118       41   25.8%   AGT Advance Communication
      AS719        443      404       39    8.8%   LANLINK autonomous system
      AS7657       120       82       38   31.7%   The Internet Group Limited
      AS762        117       80       37   31.6%   WELLFLEET-AS
      AS6181        65       28       37   56.9%   FUSE-NET
      AS803         72       36       36   50.0%   SaskNet Backbone
      AS4763       108       72       36   33.3%   Telstra New Zealand
      
      
      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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