[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, 10 Jul 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 Jul 10 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            A summary of the last weeks changes in terms of withdrawn and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 10Jul98
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      020798	51673
      030798	51528
      050798	51481
      060798	51579
      070798	52104
      080798	52116
      090798	52255
      100798	52359
      
      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
      *** Bogus 214.0.0.0/8 from AS568
      *** Bogus 215.0.0.0/9 from AS568
      *** Bogus 216.0.0.0/14 from AS2548
      *** Bogus 216.13.4.0/23 from AS6401
      *** Bogus 216.13.32.0/19 from AS6401
      *** Bogus 216.15.0.0/19 from AS10368
      *** Bogus 216.15.128.0/19 from AS7393
      *** Bogus 216.19.0.0/18 from AS4492
      *** Bogus 216.214.0.0/18 from AS7194
      
      AS Summary
      ----------
      
      Number of ASes in routing system:                 3726
      
      Number of ASes announcing only one prefix:        1823 (952 cidr, 871 classful)
      
      Largest number of  cidr routes:                    353 announced by AS3561
      Largest number of classful routes:                1139 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 10Jul98 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS4293       461      253      208   45.1%   IMCI
      AS3602       514      310      204   39.7%   Sprint Canada Inc.
      AS2493       485      281      204   42.1%   iSTAR Internet, Inc.
      AS701       1139      937      202   17.7%   Alternet
      AS271        339      144      195   57.5%   BCnet Backbone
      AS3749       223       66      157   70.4%   TECNET
      AS174        727      587      140   19.3%   Performance Systems International
      AS2685       267      162      105   39.3%   IBM Global Network - US
      AS4755       114       39       75   65.8%   Videsh Sanchar Nigam Ltd. India
      AS3221       112       42       70   62.5%   EENet Autonomous System
      AS5668       120       51       69   57.5%   Century Telephone Inc.
      AS7046       226      161       65   28.8%   UUNET-CUSTOMER
      AS3804       216      153       63   29.2%   Bell Solutions
      AS4740       394      334       60   15.2%   ASN-OZEMAIL (Ozemail Pty Ltd)
      AS10928      102       45       57   55.9%   UNKNOWN
      AS3403       181      127       54   29.8%   TIAC
      AS549        205      152       53   25.9%   ONet Backbone
      AS8517       123       72       51   41.5%   ULAKNET-ASN
      AS6335        69       18       51   73.9%   NTRNET
      AS72          85       37       48   56.5%   Schlumberger Information Network
      AS4539        73       25       48   65.8%   NETROPOLIS
      AS1239       543      496       47    8.7%   SprintLink Backbone
      AS719        449      403       46   10.2%   LANLINK autonomous system
      AS3218        70       24       46   65.7%   AS-RSSI
      AS4200       140       95       45   32.1%   AGIS (Apex Global Information Ser
      AS852        158      117       41   25.9%   AGT Advance Communication
      AS7545       102       61       41   40.2%   TPG Internet Pty Ltd
      AS762        118       80       38   32.2%   WELLFLEET-AS
      AS1785       290      252       38   13.1%   NYSERNet Backbone
      AS6181        65       28       37   56.9%   FUSE-NET
      
      
      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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