The Cidr Report

  • To: nanog at merit dot edu
  • Subject: The Cidr Report
  • From: Tony Bates <tbates at cisco dot com>
  • Date: Fri, 30 Jan 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 Jan 30 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            A summary of the last weeks changes in terms of withdrawn and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 30Jan98
      
      
      0) General Status
      
      Table History
      -------------
      
      Date	Prefixes
      230198	48658
      240198	48671
      250198	48612
      260198	49037
      270198	49125
      280198	49117
      290198	50396
      300198	50242
      
      Check http://www.employees.org/~tbates/cidr.plot.html for a plot
      of the table history.
      
      
      Possible Bogus Routes
      ---------------------
      
      *** Bogus 95.9.43.0/24 from AS2878
      *** Bogus 212.192.0.0/16 from AS5568
      *** Bogus 212.255.0.0/16 from AS2871
      
      AS Summary
      ----------
      
      Number of ASes in routing system:                 3169
      
      Number of ASes announcing only one prefix:        1477 (766 cidr, 711 classful)
      
      Largest number of  cidr routes:                   1103 announced by  AS719
      Largest number of classful routes:                1022 announced by  AS701
      
      
      
      1) Gains by aggregating at the origin AS level
      
       --- 30Jan98 ---
      ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description
      
      AS2493       726      386      340   46.8%   iSTAR Internet, Inc.
      AS6235       495      252      243   49.1%   Intermedia Communications, Inc.
      AS4293       424      215      209   49.3%   IMCI
      AS174        856      659      197   23.0%   Performance Systems International
      AS816        598      417      181   30.3%   UUNET Canada (ASN-UUNETCA-AS4)
      AS3602       456      304      152   33.3%   Sprint Canada Inc.
      AS3749       200       59      141   70.5%   TECNET
      AS701       1022      909      113   11.1%   Alternet
      AS1785       456      371       85   18.6%   NYSERNet Backbone
      AS3751       123       47       76   61.8%   SNET-AS
      AS2048       165       93       72   43.6%   LaNet
      AS5668       107       40       67   62.6%   Century Telephone Inc.
      AS1239       602      539       63   10.5%   SprintLink Backbone
      AS3804       203      141       62   30.5%   Bell Solutions
      AS1          842      784       58    6.9%   BBNPLANET
      AS271        111       56       55   49.5%   BCnet Backbone
      AS3464       119       67       52   43.7%   Alabama Research and Education Ne
      AS719        519      468       51    9.8%   LANLINK autonomous system
      AS549        210      160       50   23.8%   ONet Backbone
      AS7545       115       67       48   41.7%   TPG Internet Pty Ltd
      AS72          84       36       48   57.1%   Schlumberger Information Network
      AS4763       128       80       48   37.5%   Telstra New Zealand
      AS1221       263      218       45   17.1%   AARNET-AS
      AS7046       123       81       42   34.1%   UUNET-CUSTOMER
      AS2711        97       55       42   43.3%   SUNBELT-AS
      AS684         85       44       41   48.2%   Manitoba Regional Network Backbon
      AS3561       914      873       41    4.5%   MCI
      AS852        155      116       39   25.2%   AGT Advance Communication
      AS6335        62       24       38   61.3%   NTRNET
      AS1691       162      124       38   23.5%   BCTEL
      
      
      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
      _________________________________________________________________________
      To unsubscribe: send "unsubscribe" to apops-request at apnic dot net
      ------------------------------------------------------------------------