The Cidr Report

[Tony Bates <tbates () cisco com>]

This is an auto-generated mail on Fri Aug 11 12:00:00 PDT 2000
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      A summary of the last weeks changes in terms of withdrawn and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 11Aug00


0) General Status

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

Date    Prefixes
040800  83610
050800  83840
060800  83427
070800  83701
080800  83736
090800  83783
100800  83825
110800  83938

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


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

*** Bogus 65.0.0.0/14 from AS6172
*** Bogus 65.65.136.0/23 from AS701
*** Bogus 217.8.32.0/20 from AS3220
*** Bogus 217.8.160.0/20 from AS8246
*** Bogus 217.9.224.0/20 from AS13124
*** Bogus 220.10.56.0 from AS3215

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

Number of ASes in routing system:                 8121

Number of ASes announcing only one prefix:        4577 (2540 cidr, 2037 classful)

Largest number of  cidr routes:                    867 announced by  AS701
Largest number of classful routes:                1081 announced by  AS701



1) Gains by aggregating at the origin AS level

 --- 11Aug00 ---
ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS271        435      154      281   64.6%   BCnet Backbone
AS1221       594      435      159   26.8%   TELSTRA-AS
AS7046       431      293      138   32.0%   COQUI-NET PRTC Internet
AS9706       155       26      129   83.2%   Pusan Metropolitan City Office of
AS2609       128        8      120   93.8%   EUnet-TN
AS7657       309      200      109   35.3%   The Internet Group Limited
AS1785       472      364      108   22.9%   AppliedTheory Communications
AS9304       121       15      106   87.6%   Hutchcity
AS9269       160       57      103   64.4%   Hong Kong CTI
AS7545       156       57       99   63.5%   TPG Internet Pty Ltd
AS6429       210      116       94   44.8%   FirstCom Internet
AS7496       126       38       88   69.8%   Power Up
AS577        260      174       86   33.1%   Bell Backbone
AS174        551      465       86   15.6%   Performance Systems International
AS4293       331      246       85   25.7%   Internal ASN for C&W
AS3908       253      175       78   30.8%   Supernet, Inc.
AS705        322      247       75   23.3%   ALTERNET-AS
AS1727       167       94       73   43.7%   MRMS-WEST
AS6595       124       55       69   55.6%   DODDSEUR
AS816        340      272       68   20.0%   UUNET Canada (ASN-UUNETCA-AS4)
AS724        214      149       65   30.4%   DLA-ASNBLOCK-AS
AS4755       171      107       64   37.4%   Videsh Sanchar Nigam Ltd. India
AS5106        98       36       62   63.3%   AADS-COLUMBUS
AS3749       122       60       62   50.8%   TECNET
AS7018       553      494       59   10.7%   AT&T WorldNet Service Backbone
AS701       1081     1022       59    5.5%   Alternet
AS3602       295      239       56   19.0%   Sprint Canada Inc.
AS4740       323      270       53   16.4%   Ozemail Pty Ltd (ASN-OZEMAIL)
AS11252       90       37       53   58.9%   Idaho State University
AS16758       62       10       52   83.9%   UNKNOWN


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