[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, 11 Sep 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 Sep 11 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            A summary of the last weeks changes in terms of withdrawn and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 11Sep98
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      040998	52828
      050998	52652
      060998	52614
      070998	52667
      080998	52746
      090998	52823
      100998	53697
      110998	53238
      
      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:                 4054
      
      Number of ASes announcing only one prefix:        1961 (1002 cidr, 959 classful)
      
      Largest number of  cidr routes:                    343 announced by AS3561
      Largest number of classful routes:                1185 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 11Sep98 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS701       1185      956      229   19.3%   Alternet
      AS271        349      152      197   56.4%   BCnet Backbone
      AS4293       445      258      187   42.0%   IMCI
      AS174        789      611      178   22.6%   Performance Systems International
      AS3749       225       68      157   69.8%   TECNET
      AS2493       373      217      156   41.8%   iSTAR Internet, Inc.
      AS4200       192      100       92   47.9%   AGIS (Apex Global Information Ser
      AS5668       128       41       87   68.0%   Century Telephone Inc.
      AS2685       229      151       78   34.1%   IBM Global Network - US
      AS4755       125       49       76   60.8%   Videsh Sanchar Nigam Ltd. India
      AS3221       117       44       73   62.4%   EENet Autonomous System
      AS4740       404      336       68   16.8%   Ozemail Pty Ltd (ASN-OZEMAIL)
      AS3493       251      183       68   27.1%   INTERLINK
      AS7046       239      172       67   28.0%   UUNET-CUSTOMER
      AS3804       215      157       58   27.0%   Bell Solutions
      AS10928      101       46       55   54.5%   UNKNOWN
      AS549        204      151       53   26.0%   ONet Backbone
      AS8517       123       71       52   42.3%   ULAKNET-ASN
      AS6335        69       20       49   71.0%   NTRNET
      AS72          87       39       48   55.2%   Schlumberger Information Network
      AS1239       548      501       47    8.6%   SprintLink Backbone
      AS803         78       34       44   56.4%   SaskNet Backbone
      AS6181        66       26       40   60.6%   FUSE-NET
      AS4539        67       27       40   59.7%   NETROPOLIS
      AS852        159      120       39   24.5%   AGT Advance Communication
      AS3403       159      120       39   24.5%   TIAC
      AS7122       118       80       38   32.2%   MTS ADVANCED Network Policy
      AS10459       45       10       35   77.8%   WANSASN
      AS2707        64       31       33   51.6%   WEC
      AS6332        89       58       31   34.8%   TELNOR
      
      
      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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