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The Cidr Report
From: Tony Bates <tbates () cisco com>
Date: Fri, 16 Jan 1998 12:00:02 -0800


This is an auto-generated mail on Fri Jan 16 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      A summary of the last weeks changes in terms of withdrawn and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 16Jan98


0) General Status

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

Date    Prefixes
090198  47514
100198  47408
110198  47661
120198  47816
130198  47654
140198  47809
150198  47905
160198  48136

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


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

*** Bogus 98.6.10.0/24 from AS701

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

Number of ASes in routing system:                 3118

Number of ASes announcing only one prefix:        1448 (743 cidr, 705 classful)

Largest number of  cidr routes:                    458 announced by AS3561
Largest number of classful routes:                 991 announced by  AS701



1) Gains by aggregating at the origin AS level

 --- 16Jan98 ---
ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS2493       696      390      306   44.0%   iSTAR Internet, Inc.
AS4293       417      205      212   50.8%   IMCI
AS174        880      675      205   23.3%   Performance Systems International
AS816        577      406      171   29.6%   UUNET Canada (ASN-UUNETCA-AS4)
AS3602       450      300      150   33.3%   Sprint Canada Inc.
AS3749       201       60      141   70.1%   TECNET
AS701        991      888      103   10.4%   Alternet
AS3751       122       46       76   62.3%   SNET-AS
AS721        352      278       74   21.0%   DLA-ASNBLOCK-AS
AS2048       162       90       72   44.4%   LaNet
AS5668       103       36       67   65.0%   Century Telephone Inc.
AS3804       203      141       62   30.5%   Bell Solutions
AS1          852      791       61    7.2%   BBNPLANET
AS549        217      162       55   25.3%   ONet Backbone
AS3464       120       65       55   45.8%   Alabama Research and Education Ne
AS271        111       56       55   49.5%   BCnet Backbone
AS7545       115       63       52   45.2%   TPG Internet Pty Ltd
AS1239       578      526       52    9.0%   SprintLink Backbone
AS72          84       36       48   57.1%   Schlumberger Information Network
AS4763       127       79       48   37.8%   Telstra New Zealand
AS719        502      457       45    9.0%   LANLINK autonomous system
AS1221       261      216       45   17.2%   AARNET-AS
AS4648       194      150       44   22.7%   NZIX 2
AS684         84       42       42   50.0%   Manitoba Regional Network Backbon
AS3561       927      885       42    4.5%   MCI
AS3493       194      154       40   20.6%   INTERLINK
AS4740       331      292       39   11.8%   ASN-OZEMAIL (Ozemail Pty Ltd)
AS2711        93       54       39   41.9%   SUNBELT-AS
AS1691       161      123       38   23.6%   BCTEL
AS6332        81       44       37   45.7%   TELNOR


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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