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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical The Cidr Report
This is an auto-generated mail on Fri Dec 29 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A summary of the last weeks changes in terms of withdrawn and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.
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CIDR REPORT for 29Dec00
0) General Status
Table History
-------------
Date Prefixes
221200 96064
231200 96185
241200 96234
251200 96104
261200 95929
271200 96096
281200 96103
291200 96164
Check http://www.employees.org/~tbates/cidr.plot.html for a plot
of the table history.
Possible Bogus Routes
---------------------
AS Summary
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Number of ASes in routing system: 8416
Number of ASes announcing only one prefix: 4902 (2470 cidr, 2432 classful)
Largest number of cidr routes: 1112 announced by AS705
Largest number of classful routes: 1652 announced by AS1221
1) Gains by aggregating at the origin AS level
--- 29Dec00 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS1221 1652 1215 437 26.5% TELSTRA-AS
AS701 1581 1426 155 9.8% Alternet
AS271 284 131 153 53.9% BCnet Backbone
AS7545 189 67 122 64.6% TPG Internet Pty Ltd
AS9269 165 46 119 72.1% Hong Kong CTI
AS8013 449 344 105 23.4% PSINET-CA
AS6595 162 63 99 61.1% DODDSEUR
AS7657 253 164 89 35.2% The Internet Group Limited
AS2563 127 40 87 68.5% KoRean Education Network
AS705 326 241 85 26.1% ALTERNET-AS
AS4755 209 124 85 40.7% Videsh Sanchar Nigam Ltd. India
AS4293 341 258 83 24.3% Internal ASN for C&W
AS174 527 448 79 15.0% Performance Systems International
AS7496 100 22 78 78.0% Power Up
AS4151 278 201 77 27.7% USDA Internet Access Network
AS1727 187 111 76 40.6% MRMS-WEST
AS7046 329 254 75 22.8% UUNET-CUSTOMER
AS724 244 172 72 29.5% DLA-ASNBLOCK-AS
AS3908 233 161 72 30.9% Supernet, Inc.
AS1942 137 65 72 52.6% FR-CICG-GRENOBLE
AS13999 79 7 72 91.1% UNKNOWN
AS577 240 170 70 29.2% Bell Backbone
AS7018 594 527 67 11.3% AT&T WorldNet Service Backbone
AS5106 101 37 64 63.4% AADS-COLUMBUS
AS3749 122 58 64 52.5% TECNET
AS3602 307 244 63 20.5% Sprint Canada Inc.
AS226 167 104 63 37.7% USC/Information Sciences Institut
AS2548 365 308 57 15.6% DIGEX-AS
AS16758 63 6 57 90.5% UNKNOWN
AS376 133 77 56 42.1% RISQ
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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