The Cidr Report
Tony Bates
tbates at cisco.com
Fri Mar 5 20:00:03 UTC 1999
This is an auto-generated mail on Fri Mar 5 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A summary of the last weeks changes in terms of withdrawn and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 05Mar99
0) General Status
Table History
-------------
Date Prefixes
260299 56598
270299 56566
280299 56596
010399 56608
020399 56628
030399 56669
040399 56665
050399 56665
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: 4635
Number of ASes announcing only one prefix: 2312 (1238 cidr, 1074 classful)
Largest number of cidr routes: 367 announced by AS701
Largest number of classful routes: 860 announced by AS701
1) Gains by aggregating at the origin AS level
--- 05Mar99 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS271 355 144 211 59.4% BCnet Backbone
AS2493 270 152 118 43.7% iSTAR Internet, Inc.
AS174 643 528 115 17.9% Performance Systems International
AS11305 116 8 108 93.1% UNKNOWN
AS4755 157 75 82 52.2% Videsh Sanchar Nigam Ltd. India
AS1267 107 29 78 72.9% IUNET-AS
AS3749 138 62 76 55.1% TECNET
AS4293 209 138 71 34.0% IMCI
AS7496 95 31 64 67.4% Power Up
AS4740 394 330 64 16.2% Ozemail Pty Ltd (ASN-OZEMAIL)
AS4200 162 98 64 39.5% AGIS (Apex Global Information Ser
AS7545 109 46 63 57.8% TPG Internet Pty Ltd
AS1221 420 359 61 14.5% AARNET-AS
AS7046 262 205 57 21.8% UUNET-CUSTOMER
AS1239 518 461 57 11.0% SprintLink Backbone
AS7657 140 88 52 37.1% The Internet Group Limited
AS72 89 37 52 58.4% Schlumberger Information Network
AS10928 104 52 52 50.0% UNKNOWN
AS577 222 172 50 22.5% Bell Canada Backbone
AS719 452 405 47 10.4% LANLINK autonomous system
AS852 175 135 40 22.9% AGT Advance Communication
AS5674 70 32 38 54.3% PBI-NET-BLK
AS803 75 38 37 49.3% SaskNet Backbone
AS701 860 824 36 4.2% Alternet
AS7745 39 4 35 89.7% BIGSKY-AS
AS7122 111 78 33 29.7% MTS ADVANCED Network Policy
AS1785 248 216 32 12.9% NYSERNet Backbone
AS1 496 464 32 6.5% BBNPLANET
AS6332 94 63 31 33.0% TELNOR
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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