Merit Network
Can't find what you're looking for? Search the Mail Archives.
  About Merit   Services   Network   Resources & Support   Network Research   News   Events   Home

Discussion Communities: Merit Network Email List Archives

North American Network Operators Group

Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical

The Cidr Report

  • From: Tony Bates
  • Date: Fri Mar 24 15:08:35 2000


This is an auto-generated mail on Fri Mar 24 12:00:00 PST 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      A summary of the last weeks changes in terms of withdrawn and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 24Mar00


0) General Status

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

Date	Prefixes
290200	73317
010300	73424
020300	73040
140300	72929
210300	73882
220300	74110
230300	73692
240300	74204

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


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

*** Bogus 65.45.0.0/19 from AS10585
*** Bogus 103.10.0.0/16 from AS209
*** Bogus 172.16.250.0/24 from AS8642
*** Bogus 219.91.160.0/22 from AS7742
*** Bogus 219.91.164.0/23 from AS7742

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

Number of ASes in routing system:                 7017

Number of ASes announcing only one prefix:        3864 (2101 cidr, 1763 classful)

Largest number of  cidr routes:                    919 announced by  AS701
Largest number of classful routes:                1034 announced by  AS701



1) Gains by aggregating at the origin AS level

 --- 24Mar00 ---
ASnum    NetsNow NetsCIDR  NetGain  % Gain   Description

AS271        436      156      280   64.2%   BCnet Backbone
AS1221       691      532      159   23.0%   TELSTRA-AS
AS7046       452      307      145   32.1%   COQUI-NET PRTC Internet
AS9269       159       27      132   83.0%   Hong Kong CTI
AS9706       151       22      129   85.4%   Pusan Metropolitan City Office of
AS2609       121       23       98   81.0%   EUnet-TN
AS7657       269      174       95   35.3%   The Internet Group Limited
AS7545       154       61       93   60.4%   TPG Internet Pty Ltd
AS705        304      215       89   29.3%   ALTERNET-AS
AS174        558      470       88   15.8%   Performance Systems International
AS7496       124       39       85   68.5%   Power Up
AS4293       285      200       85   29.8%   Internal ASN for C&W
AS6429       202      119       83   41.1%   RDC-INTERNET
AS9304       107       27       80   74.8%   Hutchcity
AS577        248      172       76   30.6%   Bell Backbone
AS9557        91       23       68   74.7%   Pakistan Telecommunication Compan
AS209        425      359       66   15.5%   Qwest Communications
AS3602       306      242       64   20.9%   Sprint Canada Inc.
AS3749       121       60       61   50.4%   TECNET
AS1727       151       91       60   39.7%   MRMS-WEST
AS7260       108       50       58   53.7%   NORLIGHT
AS4740       335      277       58   17.3%   Ozemail Pty Ltd (ASN-OZEMAIL)
AS701       1034      977       57    5.5%   Alternet
AS724        194      138       56   28.9%   DLA-ASNBLOCK-AS
AS816        327      272       55   16.8%   UUNET Canada (ASN-UUNETCA-AS4)
AS7029        97       46       51   52.6%   ALLTELNET
AS4200       140       92       48   34.3%   AGIS (Apex Global Information Ser
AS6595        88       42       46   52.3%   DODDSEUR
AS7568        66       21       45   68.2%   C.S. Communications Co., Ltd.
AS684         85       40       45   52.9%   Manitoba Regional Network Backbon


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





Discussion Communities


About Merit | Services | Network | Resources & Support | Network Research
News | Events | Contact | Site Map | Merit Network Home


Merit Network, Inc.