The Cidr Report
Tony Bates
tbates at cisco.com
Fri Feb 12 20:00:03 UTC 1999
This is an auto-generated mail on Fri Feb 12 12:00:00 PST 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A summary of the last weeks changes in terms of withdrawn and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 12Feb99
0) General Status
Table History
-------------
Date Prefixes
050299 55641
060299 56070
070299 55738
080299 55776
090299 55763
100299 55822
110299 55912
120299 55713
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: 3332
Number of ASes announcing only one prefix: 1055 (0 cidr, 1055 classful)
Largest number of cidr routes: 0 announced by
Largest number of classful routes: 816 announced by AS701
1) Gains by aggregating at the origin AS level
--- 12Feb99 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS271 385 139 246 63.9% BCnet Backbone
AS2493 275 157 118 42.9% iSTAR Internet, Inc.
AS174 656 540 116 17.7% Performance Systems International
AS11305 116 8 108 93.1% UNKNOWN
AS3749 158 66 92 58.2% TECNET
AS4755 156 74 82 52.6% Videsh Sanchar Nigam Ltd. India
AS1267 111 30 81 73.0% IUNET-AS
AS4293 222 148 74 33.3% IMCI
AS7046 274 211 63 23.0% UUNET-CUSTOMER
AS4740 387 325 62 16.0% Ozemail Pty Ltd (ASN-OZEMAIL)
AS4200 161 99 62 38.5% AGIS (Apex Global Information Ser
AS1221 409 347 62 15.2% AARNET-AS
AS1239 508 454 54 10.6% SprintLink Backbone
AS72 89 37 52 58.4% Schlumberger Information Network
AS7545 109 58 51 46.8% TPG Internet Pty Ltd
AS10928 100 50 50 50.0% UNKNOWN
AS7496 77 28 49 63.6% Power Up
AS577 221 172 49 22.2% Bell Canada Backbone
AS7657 141 94 47 33.3% The Internet Group Limited
AS719 453 408 45 9.9% LANLINK autonomous system
AS3221 84 42 42 50.0% EENet Autonomous System
AS852 172 136 36 20.9% AGT Advance Communication
AS803 72 36 36 50.0% SaskNet Backbone
AS6897 63 27 36 57.1% Global-One Spain
AS7745 39 4 35 89.7% BIGSKY-AS
AS7122 112 77 35 31.2% MTS ADVANCED Network Policy
AS701 816 783 33 4.0% Alternet
AS1785 250 218 32 12.8% NYSERNet Backbone
AS4307 32 1 31 96.9% SVINET-1
AS2707 63 32 31 49.2% WEC
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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