[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, 15 May 1998 12:00:02 -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 May 15 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            A summary of the last weeks changes in terms of withdrawn and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 15May98
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      080598	51559
      090598	51630
      100598	51503
      110598	51419
      120598	52655
      130598	51474
      140598	51492
      150598	51370
      
      Check http://www.employees.org/~tbates/cidr.plot.html for a plot
      of the table history.
      
      
      Possible Bogus Routes
      ---------------------
      
      *** Bogus 222.222.222.0 from AS701
      
      AS Summary
      ----------
      
      Number of ASes in routing system:                 3564
      
      Number of ASes announcing only one prefix:        1698 (890 cidr, 808 classful)
      
      Largest number of  cidr routes:                    367 announced by AS3561
      Largest number of classful routes:                1069 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 15May98 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS4293       464      239      225   48.5%   IMCI
      AS816        697      474      223   32.0%   UUNET Canada (ASN-UUNETCA-AS4)
      AS2493       535      315      220   41.1%   iSTAR Internet, Inc.
      AS174        819      626      193   23.6%   Performance Systems International
      AS3602       484      307      177   36.6%   Sprint Canada Inc.
      AS701       1069      896      173   16.2%   Alternet
      AS3749       219       64      155   70.8%   TECNET
      AS2048       162       90       72   44.4%   LaNet
      AS5668       115       46       69   60.0%   Century Telephone Inc.
      AS3221       110       41       69   62.7%   EENet Autonomous System
      AS3248       128       60       68   53.1%   VIAnet
      AS4755        95       28       67   70.5%   Videsh Sanchar Nigam Ltd. India
      AS10928      107       44       63   58.9%   UNKNOWN
      AS7046       194      135       59   30.4%   UUNET-CUSTOMER
      AS271        112       53       59   52.7%   BCnet Backbone
      AS3804       200      142       58   29.0%   Bell Solutions
      AS549        208      154       54   26.0%   ONet Backbone
      AS1221       276      225       51   18.5%   AARNET-AS
      AS72          85       37       48   56.5%   Schlumberger Information Network
      AS1239       538      491       47    8.7%   SprintLink Backbone
      AS4763       121       75       46   38.0%   Telstra New Zealand
      AS4740       382      336       46   12.0%   ASN-OZEMAIL (Ozemail Pty Ltd)
      AS7545       105       60       45   42.9%   TPG Internet Pty Ltd
      AS852        157      117       40   25.5%   AGT Advance Communication
      AS6335        64       24       40   62.5%   NTRNET
      AS684         93       54       39   41.9%   Manitoba Regional Network Backbon
      AS4200       127       88       39   30.7%   AGIS (Apex Global Information Ser
      AS1982       154      115       39   25.3%   Northwest Nexus, Inc.
      AS762        118       80       38   32.2%   WELLFLEET-AS
      AS3493       164      126       38   23.2%   INTERLINK
      
      
      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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