[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, 19 Jun 1998 12:00:04 -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 19 12:00:01 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            A summary of the last weeks changes in terms of withdrawn and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 19Jun98
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      120698	51404
      130698	51272
      140698	51351
      150698	51499
      160698	51736
      170698	51866
      180698	51372
      190698	51379
      
      Check http://www.employees.org/~tbates/cidr.plot.html for a plot
      of the table history.
      
      
      Possible Bogus Routes
      ---------------------
      
      *** Bogus 213.102.1.0 from AS3259
      
      AS Summary
      ----------
      
      Number of ASes in routing system:                 3657
      
      Number of ASes announcing only one prefix:        1769 (940 cidr, 829 classful)
      
      Largest number of  cidr routes:                    353 announced by AS3561
      Largest number of classful routes:                1129 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 19Jun98 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS4293       463      242      221   47.7%   IMCI
      AS2493       494      286      208   42.1%   iSTAR Internet, Inc.
      AS3602       507      310      197   38.9%   Sprint Canada Inc.
      AS271        336      145      191   56.8%   BCnet Backbone
      AS701       1129      941      188   16.7%   Alternet
      AS3749       220       65      155   70.5%   TECNET
      AS174        721      582      139   19.3%   Performance Systems International
      AS3218        78        7       71   91.0%   AS-RSSI
      AS3221       112       42       70   62.5%   EENet Autonomous System
      AS5668       117       49       68   58.1%   Century Telephone Inc.
      AS10928      109       43       66   60.6%   UNKNOWN
      AS7046       206      141       65   31.6%   UUNET-CUSTOMER
      AS4755       100       38       62   62.0%   Videsh Sanchar Nigam Ltd. India
      AS3804       205      143       62   30.2%   Bell Solutions
      AS3403       183      125       58   31.7%   TIAC
      AS1221       294      239       55   18.7%   AARNET-AS
      AS549        205      152       53   25.9%   ONet Backbone
      AS4740       366      316       50   13.7%   ASN-OZEMAIL (Ozemail Pty Ltd)
      AS4200       149      100       49   32.9%   AGIS (Apex Global Information Ser
      AS8517       120       72       48   40.0%   ULAKNET-ASN
      AS72          85       37       48   56.5%   Schlumberger Information Network
      AS4539        73       25       48   65.8%   NETROPOLIS
      AS1239       542      495       47    8.7%   SprintLink Backbone
      AS6335        67       24       43   64.2%   NTRNET
      AS852        158      116       42   26.6%   AGT Advance Communication
      AS719        443      404       39    8.8%   LANLINK autonomous system
      AS762        116       79       37   31.9%   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
      *             APOPS: Asia Pacific Operations Forum              *
      * To unsubscribe: send "unsubscribe" to apops-request at apnic dot net *