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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 Mar 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A summary of the last weeks changes in terms of withdrawn and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.
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CIDR REPORT for 19Mar99
0) General Status
Table History
-------------
Date Prefixes
120399 56938
130399 57039
140399 56857
150399 56894
160399 57203
170399 57348
180399 57351
190399 57539
Check http://www.employees.org/~tbates/cidr.plot.html for a plot
of the table history.
Possible Bogus Routes
---------------------
*** Bogus 123.217.230.0/24 from AS174
AS Summary
----------
Number of ASes in routing system: 4691
Number of ASes announcing only one prefix: 2322 (1249 cidr, 1073 classful)
Largest number of cidr routes: 383 announced by AS701
Largest number of classful routes: 851 announced by AS701
1) Gains by aggregating at the origin AS level
--- 19Mar99 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS271 356 145 211 59.3% BCnet Backbone
AS2493 265 148 117 44.2% iSTAR Internet, Inc.
AS174 641 528 113 17.6% Performance Systems International
AS11305 116 8 108 93.1% UNKNOWN
AS226 204 99 105 51.5% USC/Information Sciences Institut
AS4755 159 82 77 48.4% Videsh Sanchar Nigam Ltd. India
AS3749 138 62 76 55.1% TECNET
AS4293 209 138 71 34.0% IMCI
AS1267 94 24 70 74.5% IUNET-AS
AS4200 165 97 68 41.2% AGIS (Apex Global Information Ser
AS7046 273 208 65 23.8% UUNET-CUSTOMER
AS7545 110 46 64 58.2% TPG Internet Pty Ltd
AS7496 96 34 62 64.6% Power Up
AS1221 430 368 62 14.4% AARNET-AS
AS1239 523 466 57 10.9% SprintLink Backbone
AS4740 364 311 53 14.6% Ozemail Pty Ltd (ASN-OZEMAIL)
AS7657 159 107 52 32.7% The Internet Group Limited
AS72 91 39 52 57.1% Schlumberger Information Network
AS3493 229 178 51 22.3% INTERLINK
AS577 223 173 50 22.4% Bell Canada Backbone
AS10928 100 51 49 49.0% UNKNOWN
AS719 457 409 48 10.5% LANLINK autonomous system
AS5674 80 36 44 55.0% PBI-NET-BLK
AS852 174 135 39 22.4% AGT Advance Communication
AS803 73 37 36 49.3% SaskNet Backbone
AS7745 39 4 35 89.7% BIGSKY-AS
AS7122 111 78 33 29.7% MTS ADVANCED Network Policy
AS6332 92 59 33 35.9% TELNOR
AS1 506 473 33 6.5% BBNPLANET
AS1785 248 216 32 12.9% NYSERNet Backbone
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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