The Cidr Report

Fri Oct 15 19:00:04 UTC 1999

This is an auto-generated mail on Fri Oct 15 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      A summary of the last weeks changes in terms of withdrawn and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 15Oct99

0) General Status

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

Date	Prefixes
081099	64852
091099	64704
101099	64870
111099	64886
121099	64919
131099	65250
141099	68160
151099	65450

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:                 5800

Number of ASes announcing only one prefix:        3048 (1667 cidr, 1381 classful)

Largest number of  cidr routes:                    573 announced by  AS701
Largest number of classful routes:                 932 announced by  AS701

1) Gains by aggregating at the origin AS level

 --- 15Oct99 ---
ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS271        384      144      240   62.5%   BCnet Backbone
AS719        728      563      165   22.7%   LANLINK autonomous system
AS7046       403      267      136   33.7%   UUNET-CUSTOMER
AS2609       128        8      120   93.8%   EUnet-TN
AS9269       130       21      109   83.8%   Hong Kong CTI
AS1221       623      514      109   17.5%   TELSTRA-AS
AS6944       112       19       93   83.0%   RapidSite, Inc.
AS174        580      487       93   16.0%   Performance Systems International
AS7657       249      161       88   35.3%   The Internet Group Limited
AS4293       229      143       86   37.6%   Internal ASN for C&W
AS577        260      177       83   31.9%   Bell Canada Backbone
AS7496       111       31       80   72.1%   Power Up
AS7545       140       64       76   54.3%   TPG Internet Pty Ltd
AS3749       140       64       76   54.3%   TECNET
AS4200       183      111       72   39.3%   AGIS (Apex Global Information Ser
AS4740       341      289       52   15.2%   Ozemail Pty Ltd (ASN-OZEMAIL)
AS209        312      262       50   16.0%   Qwest Communications
AS2493       136       90       46   33.8%   iSTAR Internet, Inc.
AS684         91       48       43   47.3%   Manitoba Regional Network Backbon
AS701        932      891       41    4.4%   Alternet
AS816        198      159       39   19.7%   UUNET Canada (ASN-UUNETCA-AS4)
AS6528        45        7       38   84.4%   WORLD-LYNX
AS549        204      166       38   18.6%   ONet Backbone
AS4755       105       67       38   36.2%   Videsh Sanchar Nigam Ltd. India
AS6172       145      112       33   22.8%   HOME-NET-1
AS3737        99       66       33   33.3%   PenTeleData Inc. (ASN-PTD)
AS1          496      463       33    6.7%   GTE Internetworking
AS9304        47       15       32   68.1%   Hutchcity
AS7568        44       12       32   72.7%   C.S. Communications Co., Ltd.
AS1785       236      204       32   13.6%   NYSERNet Backbone

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