The Cidr Report
Tony Bates
tbates at cisco.com
Fri Aug 13 19:00:02 UTC 1999
This is an auto-generated mail on Fri Aug 13 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A summary of the last weeks changes in terms of withdrawn and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 13Aug99
0) General Status
Table History
-------------
Date Prefixes
060899 61906
070899 61697
080899 61812
090899 61912
100899 62034
110899 62198
120899 63033
130899 63211
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: 5428
Number of ASes announcing only one prefix: 2841 (1563 cidr, 1278 classful)
Largest number of cidr routes: 472 announced by AS701
Largest number of classful routes: 993 announced by AS1890
1) Gains by aggregating at the origin AS level
--- 13Aug99 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS1890 993 436 557 56.1% UUNET NL Autonomous System
AS271 343 148 195 56.9% BCnet Backbone
AS2609 124 20 104 83.9% EUnet-TN
AS1221 541 444 97 17.9% TELSTRA-AS
AS174 577 483 94 16.3% Performance Systems International
AS577 286 193 93 32.5% Bell Canada Backbone
AS7046 323 236 87 26.9% UUNET-CUSTOMER
AS4293 235 148 87 37.0% IMCI
AS4200 183 104 79 43.2% AGIS (Apex Global Information Ser
AS7657 235 159 76 32.3% The Internet Group Limited
AS209 323 247 76 23.5% Qwest Communications
AS7545 141 66 75 53.2% TPG Internet Pty Ltd
AS3749 139 64 75 54.0% TECNET
AS7496 108 34 74 68.5% Power Up
AS10928 118 48 70 59.3% UNKNOWN
AS9269 85 20 65 76.5% Hong Kong CTI
AS6944 63 6 57 90.5% RapidSite, Inc.
AS4755 137 80 57 41.6% Videsh Sanchar Nigam Ltd. India
AS4740 354 298 56 15.8% Ozemail Pty Ltd (ASN-OZEMAIL)
AS719 458 407 51 11.1% LANLINK autonomous system
AS2493 156 107 49 31.4% iSTAR Internet, Inc.
AS684 91 46 45 49.5% Manitoba Regional Network Backbon
AS3737 105 65 40 38.1% PenTeleData Inc. (ASN-PTD)
AS549 210 171 39 18.6% ONet Backbone
AS1 499 463 36 7.2% BBNPLANET
AS1785 242 209 33 13.6% NYSERNet Backbone
AS4307 32 1 31 96.9% SVINET-1
AS10479 40 9 31 77.5% ITESM-Rectoria Zona Norte
AS8023 43 13 30 69.8% CASTLES
AS7745 38 8 30 78.9% BIGSKY-AS
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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