The Cidr Report

  • To: nanog at merit dot edu
  • Subject: The Cidr Report
  • From: Tony Bates <tbates at cisco dot com>
  • Date: Fri, 27 Feb 1998 12:00:02 -0800
  • 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 Feb 27 12:00:00 PST 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            A summary of the last weeks changes in terms of withdrawn and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 27Feb98
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      200298	49181
      210298	49167
      220298	49121
      230298	49244
      240298	49374
      250298	49380
      260298	49515
      270298	49830
      
      Check http://www.employees.org/~tbates/cidr.plot.html for a plot
      of the table history.
      
      
      Possible Bogus Routes
      ---------------------
      
      *** Bogus 64.0.0.0 from AS7777
      *** Bogus 65.0.0.0 from AS7777
      *** Bogus 66.0.0.0 from AS7777
      *** Bogus 67.0.0.0 from AS7777
      *** Bogus 68.0.0.0 from AS7777
      *** Bogus 69.0.0.0 from AS7777
      *** Bogus 70.0.0.0 from AS7777
      *** Bogus 71.0.0.0 from AS7777
      *** Bogus 72.0.0.0 from AS7777
      *** Bogus 73.0.0.0 from AS7777
      *** Bogus 74.0.0.0 from AS7777
      *** Bogus 75.0.0.0 from AS7777
      *** Bogus 76.0.0.0 from AS7777
      *** Bogus 77.0.0.0 from AS7777
      *** Bogus 78.0.0.0 from AS7777
      *** Bogus 79.0.0.0 from AS7777
      *** Bogus 80.0.0.0 from AS7777
      *** Bogus 81.0.0.0 from AS7777
      *** Bogus 82.0.0.0 from AS7777
      *** Bogus 83.0.0.0 from AS7777
      *** Bogus 84.0.0.0 from AS7777
      *** Bogus 85.0.0.0 from AS7777
      *** Bogus 86.0.0.0 from AS7777
      *** Bogus 87.0.0.0 from AS7777
      *** Bogus 88.0.0.0 from AS7777
      *** Bogus 89.0.0.0 from AS7777
      *** Bogus 90.0.0.0 from AS7777
      *** Bogus 91.0.0.0 from AS7777
      *** Bogus 92.0.0.0 from AS7777
      *** Bogus 93.0.0.0 from AS7777
      *** Bogus 94.0.0.0 from AS7777
      *** Bogus 95.0.0.0 from AS7777
      *** Bogus 96.0.0.0 from AS7777
      *** Bogus 97.0.0.0 from AS7777
      *** Bogus 98.0.0.0 from AS7777
      *** Bogus 99.0.0.0 from AS7777
      *** Bogus 100.0.0.0 from AS7777
      *** Bogus 101.0.0.0 from AS7777
      *** Bogus 102.0.0.0 from AS7777
      *** Bogus 103.0.0.0 from AS7777
      *** Bogus 104.0.0.0 from AS7777
      *** Bogus 105.0.0.0 from AS7777
      *** Bogus 106.0.0.0 from AS7777
      *** Bogus 107.0.0.0 from AS7777
      *** Bogus 108.0.0.0 from AS7777
      *** Bogus 109.0.0.0 from AS7777
      *** Bogus 110.0.0.0 from AS7777
      *** Bogus 111.0.0.0 from AS7777
      *** Bogus 112.0.0.0 from AS7777
      *** Bogus 113.0.0.0 from AS7777
      *** Bogus 114.0.0.0 from AS7777
      *** Bogus 115.0.0.0 from AS7777
      *** Bogus 116.0.0.0 from AS7777
      *** Bogus 117.0.0.0 from AS7777
      *** Bogus 118.0.0.0 from AS7777
      *** Bogus 119.0.0.0 from AS7777
      *** Bogus 120.0.0.0 from AS7777
      *** Bogus 121.0.0.0 from AS7777
      *** Bogus 122.0.0.0 from AS7777
      *** Bogus 123.0.0.0 from AS7777
      *** Bogus 124.0.0.0 from AS7777
      *** Bogus 125.0.0.0 from AS7777
      *** Bogus 126.0.0.0 from AS7777
      *** Bogus 213.0.0.0/8 from AS7777
      *** Bogus 214.0.0.0/8 from AS7777
      *** Bogus 215.0.0.0/8 from AS7777
      *** Bogus 216.0.0.0/8 from AS7777
      *** Bogus 217.0.0.0/8 from AS7777
      *** Bogus 218.0.0.0/8 from AS7777
      *** Bogus 219.0.0.0/8 from AS7777
      *** Bogus 220.0.0.0/8 from AS7777
      *** Bogus 221.0.0.0/8 from AS7777
      *** Bogus 222.0.0.0/8 from AS7777
      *** Bogus 223.0.0.0/8 from AS7777
      
      AS Summary
      ----------
      
      Number of ASes in routing system:                 3268
      
      Number of ASes announcing only one prefix:        1551 (799 cidr, 752 classful)
      
      Largest number of  cidr routes:                    429 announced by AS3561
      Largest number of classful routes:                1125 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 27Feb98 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS2493       575      352      223   38.8%   iSTAR Internet, Inc.
      AS4293       426      223      203   47.7%   IMCI
      AS816        604      432      172   28.5%   UUNET Canada (ASN-UUNETCA-AS4)
      AS701       1125      961      164   14.6%   Alternet
      AS174        798      637      161   20.2%   Performance Systems International
      AS3602       459      306      153   33.3%   Sprint Canada Inc.
      AS3749       198       55      143   72.2%   TECNET
      AS3751       125       48       77   61.6%   SNET-AS
      AS1221       419      342       77   18.4%   AARNET-AS
      AS5668       110       38       72   65.5%   Century Telephone Inc.
      AS3804       203      141       62   30.5%   Bell Solutions
      AS3221        93       33       60   64.5%   EENet Autonomous System
      AS1239       582      523       59   10.1%   SprintLink Backbone
      AS271        112       56       56   50.0%   BCnet Backbone
      AS3464       117       63       54   46.2%   Alabama Research and Education Ne
      AS549        211      162       49   23.2%   ONet Backbone
      AS72          84       36       48   57.1%   Schlumberger Information Network
      AS4763       128       80       48   37.5%   Telstra New Zealand
      AS7046       133       89       44   33.1%   UUNET-CUSTOMER
      AS6181        66       22       44   66.7%   FUSE-NET
      AS4755        76       32       44   57.9%   Videsh Sanchar Nigam Ltd. India
      AS3561       886      844       42    4.7%   MCI
      AS2711        97       55       42   43.3%   SUNBELT-AS
      AS10722       73       31       42   57.5%   Aluminum Co. of America
      AS852        157      117       40   25.5%   AGT Advance Communication
      AS6335        63       23       40   63.5%   NTRNET
      AS4740       345      306       39   11.3%   ASN-OZEMAIL (Ozemail Pty Ltd)
      AS3493       166      127       39   23.5%   INTERLINK
      AS1          782      743       39    5.0%   BBNPLANET
      AS719        437      400       37    8.5%   LANLINK autonomous system
      
      
      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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