The Cidr Report
Tony Bates
tbates at cisco.com
Fri Apr 2 20:00:03 UTC 1999
This is an auto-generated mail on Fri Apr 2 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A summary of the last weeks changes in terms of withdrawn and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 02Apr99
0) General Status
Table History
-------------
Date Prefixes
260399 58170
270399 57903
280399 57861
290399 58117
300399 58152
310399 65565
010499 58158
020499 57822
Check http://www.employees.org/~tbates/cidr.plot.html for a plot
of the table history.
Possible Bogus Routes
---------------------
*** Bogus 71.0.2.0/24 from AS1239
AS Summary
----------
Number of ASes in routing system: 4764
Number of ASes announcing only one prefix: 2369 (1259 cidr, 1110 classful)
Largest number of cidr routes: 383 announced by AS701
Largest number of classful routes: 829 announced by AS701
1) Gains by aggregating at the origin AS level
--- 02Apr99 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS271 336 136 200 59.5% BCnet Backbone
AS174 637 523 114 17.9% Performance Systems International
AS226 206 99 107 51.9% USC/Information Sciences Institut
AS2493 239 140 99 41.4% iSTAR Internet, Inc.
AS4755 159 73 86 54.1% Videsh Sanchar Nigam Ltd. India
AS3749 140 63 77 55.0% TECNET
AS4293 214 142 72 33.6% IMCI
AS1267 94 24 70 74.5% IUNET-AS
AS4200 165 97 68 41.2% AGIS (Apex Global Information Ser
AS7545 110 46 64 58.2% TPG Internet Pty Ltd
AS7496 94 30 64 68.1% Power Up
AS7046 268 205 63 23.5% UUNET-CUSTOMER
AS1221 446 383 63 14.1% AARNET-AS
AS4740 335 276 59 17.6% Ozemail Pty Ltd (ASN-OZEMAIL)
AS1239 521 463 58 11.1% SprintLink Backbone
AS7657 173 118 55 31.8% The Internet Group Limited
AS10928 108 53 55 50.9% UNKNOWN
AS72 92 40 52 56.5% Schlumberger Information Network
AS3493 234 183 51 21.8% INTERLINK
AS719 461 412 49 10.6% LANLINK autonomous system
AS577 222 173 49 22.1% Bell Canada Backbone
AS5674 80 36 44 55.0% PBI-NET-BLK
AS803 72 36 36 50.0% SaskNet Backbone
AS1 510 474 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
AS1785 248 216 32 12.9% NYSERNet Backbone
AS6172 151 120 31 20.5% HOME-NET-1
AS4307 32 1 31 96.9% SVINET-1
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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