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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 26 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A summary of the last weeks changes in terms of withdrawn and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 26Mar99
0) General Status
Table History
-------------
Date Prefixes
190399 57539
200399 57531
210399 57555
220399 57592
230399 57780
240399 57729
250399 57967
260399 58170
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: 4735
Number of ASes announcing only one prefix: 2356 (1262 cidr, 1094 classful)
Largest number of cidr routes: 389 announced by AS701
Largest number of classful routes: 834 announced by AS701
1) Gains by aggregating at the origin AS level
--- 26Mar99 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS271 355 144 211 59.4% BCnet Backbone
AS11305 184 10 174 94.6% UNKNOWN
AS174 641 525 116 18.1% Performance Systems International
AS2493 253 144 109 43.1% iSTAR Internet, Inc.
AS226 205 98 107 52.2% USC/Information Sciences Institut
AS4755 163 77 86 52.8% Videsh Sanchar Nigam Ltd. India
AS3749 140 63 77 55.0% TECNET
AS1740 332 255 77 23.2% CERFnet
AS4293 214 141 73 34.1% IMCI
AS1267 94 24 70 74.5% IUNET-AS
AS4200 166 98 68 41.0% AGIS (Apex Global Information Ser
AS7545 109 45 64 58.7% TPG Internet Pty Ltd
AS7046 272 208 64 23.5% UUNET-CUSTOMER
AS4740 394 330 64 16.2% Ozemail Pty Ltd (ASN-OZEMAIL)
AS1239 530 468 62 11.7% SprintLink Backbone
AS1221 428 366 62 14.5% AARNET-AS
AS7496 94 33 61 64.9% Power Up
AS10928 108 50 58 53.7% UNKNOWN
AS72 91 39 52 57.1% Schlumberger Information Network
AS577 223 172 51 22.9% Bell Canada Backbone
AS3493 232 181 51 22.0% INTERLINK
AS7657 164 114 50 30.5% The Internet Group Limited
AS719 461 412 49 10.6% LANLINK autonomous system
AS5674 80 36 44 55.0% PBI-NET-BLK
AS852 175 136 39 22.3% AGT Advance Communication
AS803 72 36 36 50.0% SaskNet Backbone
AS1 509 473 36 7.1% BBNPLANET
AS7745 39 4 35 89.7% BIGSKY-AS
AS7122 111 78 33 29.7% MTS ADVANCED Network Policy
AS262 36 3 33 91.7% JVNC-II-AS
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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