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The Cidr Report

  • From: Tony Bates
  • Date: Fri Dec 10 15:03:46 1999


This is an auto-generated mail on Fri Dec 10 12:00:00 PST 1999
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      A summary of the last weeks changes in terms of withdrawn and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 10Dec99


0) General Status

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

Date	Prefixes
031299	67454
041299	67626
051299	67585
061299	67819
071299	67663
081299	67694
091299	68242
101299	67903

Check http://www.employees.org/~tbates/cidr.plot.html for a plot
of the table history.


Possible Bogus Routes
---------------------

*** Bogus 64.4.64.0/19 from AS7398
*** Bogus 64.6.32.0/20 from AS13740
*** Bogus 64.6.64.0/20 from AS10726
*** Bogus 64.6.206.0/23 from AS14215
*** Bogus 64.7.0.0/24 from AS6461
*** Bogus 219.91.160.0/22 from AS7742
*** Bogus 219.91.164.0/23 from AS7742

AS Summary
----------

Number of ASes in routing system:                 6207

Number of ASes announcing only one prefix:        3302 (1819 cidr, 1483 classful)

Largest number of  cidr routes:                    659 announced by  AS701
Largest number of classful routes:                 981 announced by  AS701



1) Gains by aggregating at the origin AS level

 --- 10Dec99 ---
ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS271        383      141      242   63.2%   BCnet Backbone
AS7046       393      256      137   34.9%   UUNET-CUSTOMER
AS1221       640      524      116   18.1%   TELSTRA-AS
AS2609       126       11      115   91.3%   EUnet-TN
AS9706       112       11      101   90.2%   Pusan Metropolitan City Office of
AS3602       370      269      101   27.3%   Sprint Canada Inc.
AS9269       128       29       99   77.3%   Hong Kong CTI
AS7657       270      174       96   35.6%   The Internet Group Limited
AS1653       125       35       90   72.0%   SUNET Swedish University Network
AS7545       149       61       88   59.1%   TPG Internet Pty Ltd
AS174        562      476       86   15.3%   Performance Systems International
AS4293       229      144       85   37.1%   Internal ASN for C&W
AS577        259      181       78   30.1%   Bell Canada Backbone
AS7496       113       37       76   67.3%   Power Up
AS3749       137       62       75   54.7%   TECNET
AS4200       175      108       67   38.3%   AGIS (Apex Global Information Ser
AS705        160       98       62   38.8%   ALTERNET-AS
AS816        253      193       60   23.7%   UUNET Canada (ASN-UUNETCA-AS4)
AS4740       347      289       58   16.7%   Ozemail Pty Ltd (ASN-OZEMAIL)
AS701        981      934       47    4.8%   Alternet
AS684         92       46       46   50.0%   Manitoba Regional Network Backbon
AS209        294      253       41   13.9%   Qwest Communications
AS1          521      480       41    7.9%   GTE Internetworking
AS9304        60       22       38   63.3%   Hutchcity
AS6528        45        7       38   84.4%   WORLD-LYNX
AS8013       132       96       36   27.3%   PSINET-CA
AS549        198      162       36   18.2%   ONet Backbone
AS4755       104       68       36   34.6%   Videsh Sanchar Nigam Ltd. India
AS7568        51       16       35   68.6%   C.S. Communications Co., Ltd.
AS11127      110       76       34   30.9%   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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