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The Cidr Report

  • From: Tony Bates
  • Date: Fri Jun 26 15:14:04 1998

This is an auto-generated mail on Fri Jun 26 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      A summary of the last weeks changes in terms of withdrawn and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 26Jun98


0) General Status

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

Date	Prefixes
190698	51379
200698	51329
210698	51500
220698	51541
230698	51362
240698	51537
250698	51460
260698	51523

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


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

*** Bogus 213.102.1.0 from AS3259
*** Bogus 214.0.0.0/8 from AS568

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

Number of ASes in routing system:                 3669

Number of ASes announcing only one prefix:        1763 (935 cidr, 828 classful)

Largest number of  cidr routes:                    350 announced by AS3561
Largest number of classful routes:                1145 announced by  AS701



1) Gains by aggregating at the origin AS level

 --- 26Jun98 ---
ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS4293       452      247      205   45.4%   IMCI
AS2493       488      283      205   42.0%   iSTAR Internet, Inc.
AS3602       511      313      198   38.7%   Sprint Canada Inc.
AS701       1145      950      195   17.0%   Alternet
AS271        336      145      191   56.8%   BCnet Backbone
AS3749       218       70      148   67.9%   TECNET
AS174        725      587      138   19.0%   Performance Systems International
AS4755       106       32       74   69.8%   Videsh Sanchar Nigam Ltd. India
AS3218        78        7       71   91.0%   AS-RSSI
AS7046       218      148       70   32.1%   UUNET-CUSTOMER
AS3221       112       42       70   62.5%   EENet Autonomous System
AS6227        96       28       68   70.8%   !nteract
AS10928      107       42       65   60.7%   UNKNOWN
AS5668       116       54       62   53.4%   Century Telephone Inc.
AS3804       208      146       62   29.8%   Bell Solutions
AS4740       382      328       54   14.1%   ASN-OZEMAIL (Ozemail Pty Ltd)
AS3403       180      127       53   29.4%   TIAC
AS2685       133       83       50   37.6%   IBM Global Network - US
AS549        194      145       49   25.3%   ONet Backbone
AS8517       120       72       48   40.0%   ULAKNET-ASN
AS72          85       37       48   56.5%   Schlumberger Information Network
AS6335        68       20       48   70.6%   NTRNET
AS4539        73       25       48   65.8%   NETROPOLIS
AS4200       145       97       48   33.1%   AGIS (Apex Global Information Ser
AS1239       543      496       47    8.7%   SprintLink Backbone
AS719        449      405       44    9.8%   LANLINK autonomous system
AS852        158      116       42   26.6%   AGT Advance Communication
AS762        118       80       38   32.2%   WELLFLEET-AS
AS6181        65       28       37   56.9%   FUSE-NET
AS4763       109       72       37   33.9%   Telstra New Zealand


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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