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The Cidr Report

  • From: Tony Bates
  • Date: Fri Oct 08 16:15:34 1999

This is an auto-generated mail on Fri Oct  8 12:00:00 PDT 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      A summary of the last weeks changes in terms of withdrawn and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 08Oct99


0) General Status

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

Date	Prefixes
011099	64019
021099	64011
031099	64104
041099	64203
051099	64273
061099	64275
071099	64665
081099	64852

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:                 5768

Number of ASes announcing only one prefix:        3053 (1673 cidr, 1380 classful)

Largest number of  cidr routes:                    570 announced by  AS701
Largest number of classful routes:                 929 announced by  AS701



1) Gains by aggregating at the origin AS level

 --- 08Oct99 ---
ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS271        384      144      240   62.5%   BCnet Backbone
AS719        731      566      165   22.6%   LANLINK autonomous system
AS2609       127       13      114   89.8%   EUnet-TN
AS9269       137       24      113   82.5%   Hong Kong CTI
AS1221       618      509      109   17.6%   TELSTRA-AS
AS174        583      490       93   16.0%   Performance Systems International
AS7046       341      255       86   25.2%   UUNET-CUSTOMER
AS4293       226      141       85   37.6%   Internal ASN for C&W
AS577        261      177       84   32.2%   Bell Canada Backbone
AS6944        97       15       82   84.5%   RapidSite, Inc.
AS7545       140       60       80   57.1%   TPG Internet Pty Ltd
AS7657       243      165       78   32.1%   The Internet Group Limited
AS7496       108       31       77   71.3%   Power Up
AS3749       140       64       76   54.3%   TECNET
AS4200       181      109       72   39.8%   AGIS (Apex Global Information Ser
AS4740       343      290       53   15.5%   Ozemail Pty Ltd (ASN-OZEMAIL)
AS209        310      261       49   15.8%   Qwest Communications
AS2493       138       91       47   34.1%   iSTAR Internet, Inc.
AS684         92       46       46   50.0%   Manitoba Regional Network Backbon
AS816        225      182       43   19.1%   UUNET Canada (ASN-UUNETCA-AS4)
AS701        929      888       41    4.4%   Alternet
AS6528        45        7       38   84.4%   WORLD-LYNX
AS549        200      162       38   19.0%   ONet Backbone
AS4755       103       68       35   34.0%   Videsh Sanchar Nigam Ltd. India
AS3737        99       66       33   33.3%   PenTeleData Inc. (ASN-PTD)
AS7568        45       13       32   71.1%   C.S. Communications Co., Ltd.
AS1785       236      204       32   13.6%   NYSERNet Backbone
AS1          492      460       32    6.5%   GTE Internetworking
AS9453        33        2       31   93.9%   Soongsil University
AS7745        40        9       31   77.5%   BIGSKY-AS


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