The Cidr Report
Tony Bates
tbates at cisco.com
Fri Oct 1 19:00:04 UTC 1999
This is an auto-generated mail on Fri Oct 1 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A summary of the last weeks changes in terms of withdrawn and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 01Oct99
0) General Status
Table History
-------------
Date Prefixes
060999 63135
070999 63155
080999 62994
270999 64154
280999 63958
290999 64074
300999 64030
011099 64019
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: 5723
Number of ASes announcing only one prefix: 2996 (1637 cidr, 1359 classful)
Largest number of cidr routes: 556 announced by AS701
Largest number of classful routes: 910 announced by AS701
1) Gains by aggregating at the origin AS level
--- 01Oct99 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS271 383 146 237 61.9% BCnet Backbone
AS2609 127 13 114 89.8% EUnet-TN
AS1221 585 478 107 18.3% TELSTRA-AS
AS9269 128 28 100 78.1% Hong Kong CTI
AS174 589 494 95 16.1% Performance Systems International
AS7046 337 250 87 25.8% UUNET-CUSTOMER
AS4293 228 142 86 37.7% Internal ASN for C&W
AS577 263 178 85 32.3% Bell Canada Backbone
AS7545 141 61 80 56.7% TPG Internet Pty Ltd
AS7657 244 167 77 31.6% The Internet Group Limited
AS7496 109 33 76 69.7% Power Up
AS6944 92 16 76 82.6% RapidSite, Inc.
AS3749 139 64 75 54.0% TECNET
AS4200 181 109 72 39.8% AGIS (Apex Global Information Ser
AS719 464 408 56 12.1% LANLINK autonomous system
AS4740 342 288 54 15.8% Ozemail Pty Ltd (ASN-OZEMAIL)
AS2493 138 91 47 34.1% iSTAR Internet, Inc.
AS684 92 46 46 50.0% Manitoba Regional Network Backbon
AS209 296 250 46 15.5% Qwest Communications
AS6528 45 7 38 84.4% WORLD-LYNX
AS549 200 162 38 19.0% ONet Backbone
AS4755 112 76 36 32.1% Videsh Sanchar Nigam Ltd. India
AS3737 99 66 33 33.3% PenTeleData Inc. (ASN-PTD)
AS701 910 878 32 3.5% Alternet
AS9453 33 2 31 93.9% Soongsil University
AS7745 40 9 31 77.5% BIGSKY-AS
AS4307 32 1 31 96.9% SVINET-1
AS1785 234 203 31 13.2% NYSERNet Backbone
AS10479 40 9 31 77.5% ITESM-Rectoria Zona Norte
AS1 489 458 31 6.3% GTE Internetworking
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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