[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, 29 Sep 2000 12:00:01 -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@lists.apnic.net
    • 
      This is an auto-generated mail on Fri Sep 29 12:00:00 PDT 2000
      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            A summary of the last weeks changes in terms of withdrawn and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 29Sep00
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      220900	87996
      230900	87972
      240900	88049
      250900	88476
      260900	88933
      270900	88898
      280900	88696
      290900	88909
      
      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:                 8613
      
      Number of ASes announcing only one prefix:        4912 (2732 cidr, 2180 classful)
      
      Largest number of  cidr routes:                    895 announced by  AS701
      Largest number of classful routes:                1087 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 29Sep00 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS271        431      153      278   64.5%   BCnet Backbone
      AS1785       623      377      246   39.5%   AppliedTheory Communications
      AS1221       614      453      161   26.2%   TELSTRA-AS
      AS816        581      437      144   24.8%   UUNET Canada (ASN-UUNETCA-AS4)
      AS5696       421      285      136   32.3%   WinStar AS
      AS9269       177       47      130   73.4%   Hong Kong CTI
      AS2609       128        8      120   93.8%   EUnet-TN
      AS7657       337      220      117   34.7%   The Internet Group Limited
      AS7046       390      277      113   29.0%   COQUI-NET PRTC Internet
      AS9304       124       17      107   86.3%   Hutchcity
      AS7545       158       55      103   65.2%   TPG Internet Pty Ltd
      AS4755       214      116       98   45.8%   Videsh Sanchar Nigam Ltd. India
      AS705        354      258       96   27.1%   ALTERNET-AS
      AS6429       210      114       96   45.7%   FirstCom Internet
      AS9706       103        9       94   91.3%   Pusan Metropolitan City Office of
      AS7496       125       34       91   72.8%   Power Up
      AS8013       488      402       86   17.6%   PSINET-CA
      AS174        538      452       86   16.0%   Performance Systems International
      AS4293       338      255       83   24.6%   Internal ASN for C&W
      AS6595       138       57       81   58.7%   DODDSEUR
      AS13999       90        9       81   90.0%   UNKNOWN
      AS3908       255      176       79   31.0%   Supernet, Inc.
      AS1727       166       92       74   44.6%   MRMS-WEST
      AS577        248      175       73   29.4%   Bell Backbone
      AS701       1087     1018       69    6.3%   Alternet
      AS7018       579      512       67   11.6%   AT&T WorldNet Service Backbone
      AS724        227      161       66   29.1%   DLA-ASNBLOCK-AS
      AS8895       102       37       65   63.7%   Saudi Arabia AS
      AS5106        99       36       63   63.6%   AADS-COLUMBUS
      AS3749       119       57       62   52.1%   TECNET
      
      
      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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