The Cidr Report
Tony Bates
tbates at cisco.com
Fri Nov 19 20:00:02 UTC 1999
This is an auto-generated mail on Fri Nov 19 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A summary of the last weeks changes in terms of withdrawn and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 19Nov99
0) General Status
Table History
-------------
Date Prefixes
041199 66135
051199 66177
061199 66189
071199 66095
081199 66195
091199 66908
101199 65842
111199 67577
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: 4241
Number of ASes announcing only one prefix: 1433 (0 cidr, 1433 classful)
Largest number of cidr routes: 0 announced by
Largest number of classful routes: 1720 announced by AS1890
1) Gains by aggregating at the origin AS level
--- 19Nov99 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS1890 1720 797 923 53.7% UUNET NL Autonomous System
AS271 383 141 242 63.2% BCnet Backbone
AS7046 389 258 131 33.7% UUNET-CUSTOMER
AS2609 126 11 115 91.3% EUnet-TN
AS1221 614 506 108 17.6% TELSTRA-AS
AS9269 123 30 93 75.6% Hong Kong CTI
AS7657 253 162 91 36.0% The Internet Group Limited
AS7545 146 60 86 58.9% TPG Internet Pty Ltd
AS7496 123 38 85 69.1% Power Up
AS174 555 471 84 15.1% Performance Systems International
AS4293 220 138 82 37.3% Internal ASN for C&W
AS577 263 182 81 30.8% Bell Canada Backbone
AS3749 138 63 75 54.3% TECNET
AS4200 181 111 70 38.7% AGIS (Apex Global Information Ser
AS6944 63 6 57 90.5% RapidSite, Inc.
AS4740 347 292 55 15.9% Ozemail Pty Ltd (ASN-OZEMAIL)
AS816 239 190 49 20.5% UUNET Canada (ASN-UUNETCA-AS4)
AS209 304 257 47 15.5% Qwest Communications
AS684 92 46 46 50.0% Manitoba Regional Network Backbon
AS9304 55 16 39 70.9% Hutchcity
AS4755 107 68 39 36.4% Videsh Sanchar Nigam Ltd. India
AS6528 45 7 38 84.4% WORLD-LYNX
AS549 206 168 38 18.4% ONet Backbone
AS2493 125 87 38 30.4% iSTAR Internet, Inc.
AS719 195 159 36 18.5% LANLINK autonomous system
AS701 962 926 36 3.7% Alternet
AS6629 63 28 35 55.6% NOAA-AS
AS1 503 468 35 7.0% GTE Internetworking
AS7568 48 14 34 70.8% C.S. Communications Co., Ltd.
AS3737 99 66 33 33.3% PenTeleData Inc. (ASN-PTD)
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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