The Cidr Report

Fri Aug 28 19:00:04 UTC 1998

This is an auto-generated mail on Fri Aug 28 12:00:00 PDT 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      A summary of the last weeks changes in terms of withdrawn and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 28Aug98

0) General Status

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

Date	Prefixes
210898	52842
220898	52964
230898	52773
240898	53047
250898	53127
260898	53242
270898	53089
280898	53151

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:                 3922

Number of ASes announcing only one prefix:        1901 (987 cidr, 914 classful)

Largest number of  cidr routes:                    346 announced by AS3561
Largest number of classful routes:                1175 announced by  AS701

1) Gains by aggregating at the origin AS level

 --- 28Aug98 ---
ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS3602       552      320      232   42.0%   Sprint Canada Inc.
AS701       1175      949      226   19.2%   Alternet
AS271        351      153      198   56.4%   BCnet Backbone
AS4293       444      258      186   41.9%   IMCI
AS2493       384      227      157   40.9%   iSTAR Internet, Inc.
AS3749       223       67      156   70.0%   TECNET
AS174        701      576      125   17.8%   Performance Systems International
AS4200       193       99       94   48.7%   AGIS (Apex Global Information Ser
AS5668       131       42       89   67.9%   Century Telephone Inc.
AS2685       242      161       81   33.5%   IBM Global Network - US
AS4755       124       47       77   62.1%   Videsh Sanchar Nigam Ltd. India
AS4740       421      346       75   17.8%   Ozemail Pty Ltd (ASN-OZEMAIL)
AS3221       112       42       70   62.5%   EENet Autonomous System
AS7046       234      168       66   28.2%   UUNET-CUSTOMER
AS3493       242      176       66   27.3%   INTERLINK
AS3804       215      157       58   27.0%   Bell Solutions
AS3403       182      127       55   30.2%   TIAC
AS10928      101       46       55   54.5%   UNKNOWN
AS549        205      151       54   26.3%   ONet Backbone
AS8517       124       72       52   41.9%   ULAKNET-ASN
AS719        464      415       49   10.6%   LANLINK autonomous system
AS6335        69       20       49   71.0%   NTRNET
AS72          87       39       48   55.2%   Schlumberger Information Network
AS1239       551      503       48    8.7%   SprintLink Backbone
AS803         78       34       44   56.4%   SaskNet Backbone
AS4539        68       27       41   60.3%   NETROPOLIS
AS852        158      118       40   25.3%   AGT Advance Communication
AS6181        66       26       40   60.6%   FUSE-NET
AS7122       119       80       39   32.8%   MTS ADVANCED Network Policy
AS4614        68       32       36   52.9%   Asiaonline Hong Kong

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