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The Cidr Report

  • From: Tony Bates
  • Date: Fri Jan 14 15:04:52 2000


This is an auto-generated mail on Fri Jan 14 12:00:00 PST 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      A summary of the last weeks changes in terms of withdrawn and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 14Jan00


0) General Status

Table History
-------------

Date	Prefixes
070100	69327
080100	69344
090100	69247
100100	69357
110100	69510
120100	69669
130100	69616
140100	69862

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:                 4739

Number of ASes announcing only one prefix:        2019 (480 cidr, 1539 classful)

Largest number of  cidr routes:                    324 announced by AS6172
Largest number of classful routes:                 953 announced by  AS701



1) Gains by aggregating at the origin AS level

 --- 14Jan00 ---
ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS9269       134       21      113   84.3%   Hong Kong CTI
AS2609       124       18      106   85.5%   EUnet-TN
AS7545       153       60       93   60.8%   TPG Internet Pty Ltd
AS1653       129       38       91   70.5%   SUNET Swedish University Network
AS6429       194      117       77   39.7%   RDC-INTERNET
AS7496       111       36       75   67.6%   Power Up
AS3749       135       61       74   54.8%   TECNET
AS4200       171      105       66   38.6%   AGIS (Apex Global Information Ser
AS9304        82       21       61   74.4%   Hutchcity
AS4151       107       56       51   47.7%   USDA Internet Access Network
AS684         92       46       46   50.0%   Manitoba Regional Network Backbon
AS4755       113       73       40   35.4%   Videsh Sanchar Nigam Ltd. India
AS7568        54       16       38   70.4%   C.S. Communications Co., Ltd.
AS6528        46        8       38   82.6%   WORLD-LYNX
AS7029        78       41       37   47.4%   ALLTELNET
AS7390        50       14       36   72.0%   NLSLAN
AS6172       149      113       36   24.2%   HOME-NET-1
AS1727       113       77       36   31.9%   MRMS-WEST
AS3549       147      112       35   23.8%   Frontier GlobalCenter
AS11127      117       82       35   29.9%   UNKNOWN
AS8013       124       91       33   26.6%   PSINET-CA
AS3737        96       63       33   34.4%   PenTeleData Inc. (ASN-PTD)
AS8390        42       10       32   76.2%   Global One Communications and Inf
AS549        192      160       32   16.7%   ONet Backbone
AS7745        40        9       31   77.5%   BIGSKY-AS
AS6629        62       31       31   50.0%   NOAA-AS
AS6607        33        2       31   93.9%   HOMENET
AS6458        32        1       31   96.9%   EMPRESSA GUATEMALTECA DE TELEC
AS4307        32        1       31   96.9%   SVINET-1
AS12235       32        1       31   96.9%   UNKNOWN


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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