[apops] The Cidr Report

Sat Aug 24 06:00:02 UTC 2002

This is an auto-generated mail on Fri Aug 23 23:00:00 PDT 2002
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.

Check http://www.employees.org/~tbates/cidr-report.html for a daily
update of this report.

NEW: Check http://www.employees.org/~tbates/cidr-report-region.html for
the regional version of this report.

NEW: Check http://www.employees.org/~tbates/autnums.html for a complete
list of autonomous system number to name mappings as used by the CIDR-Report.

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      A summary of the last weeks changes in terms of withdrawn and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 amount of withdrawls.

   3) Interesting aggregates

      Interesting here means not an aggregate made as a set of 
      classful routes.      

Thanks to GX Networks for giving me access to their routing tables once a
day. 

Please send any comments about this report directly to CIDR Report <cidr-report at cisco.com>.

------------------------------------------------------------------------------

                        CIDR REPORT for 23Aug02

0) General Status

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

Date	Prefixes
160802	112263
170802	112395
180802	112126
190802	112372
200802	112331
210802	112026
220802	112220
230802	112433

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:              13481

Number of ASes announcing only one prefix:      8184 (4604 cidr, 3580 classful)

Largest number of  cidr routes:                  736 announced by AS3908
Largest number of classful routes:              1196 announced by  AS701

1) Gains by aggregating at the origin AS level

 --- 23Aug02 ---
ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS701       1196      967      229   19.1%   UUNET Technologies, Inc. 
AS1221      1039      822      217   20.9%   Telstra Pty Ltd
AS17557      268       94      174   64.9%   Pakistan Telecom
AS6595       224       60      164   73.2%   DoD Education Activity Network As
AS852        522      379      143   27.4%   Telus Advanced Communications 
AS16473      196       75      121   61.7%   Bell South 
AS7018       774      662      112   14.5%   AT&T 
AS4151       253      156       97   38.3%   USDA 
AS19632       99        5       94   94.9%   Metropolis Intercom S.A. 
AS12302      122       29       93   76.2%   MobiFon S.A.
AS16814      105       20       85   81.0%   NSS, S.A. 
AS1239       501      419       82   16.4%   Sprint 
AS226        170       89       81   47.6%   Los Nettos 
AS4755       202      126       76   37.6%   Videsh Sanchar Nigam Ltd. Autonom
AS2048       178      103       75   42.1%   State of Louisiana 
AS577        266      193       73   27.4%   Bell Advanced Communications Inc.
AS7046       291      221       70   24.1%   UUNET Technologies, Inc. 
AS3464       163      103       60   36.8%   Alabama SuperComputer Network 
AS19834       64        4       60   93.8%   NetForce, Inc. 
AS10620       85       25       60   70.6%   TVCABLE BOGOTA 
AS724        207      148       59   28.5%   DLA Systems Automation Center 
AS6535        70       13       57   81.4%   Chilesat Servicios  Empresariales
AS5515       243      186       57   23.5%   Sonera Finland Autonomous System
AS16758       63        6       57   90.5%   IKON Office Solutions 
AS3908       285      230       55   19.3%   Supernet, Inc. 
AS209        289      234       55   19.0%   Qwest 
AS9051        82       28       54   65.9%   INCONET Autonomous System
AS9498        84       31       53   63.1%   BHARTI BT INTERNET LTD.
AS3233       105       53       52   49.5%   RNC - Romanian Natioanal R&D Netw
AS703        273      223       50   18.3%   UUNET Technologies, Inc. 

Total      54880    42313    12567   22.9%

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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