The Cidr Report
Tony Bates
tbates at cisco.com
Fri Jul 2 19:00:02 UTC 1999
This is an auto-generated mail on Fri Jul 2 12:00:00 PDT 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A summary of the last weeks changes in terms of withdrawn and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 02Jul99
0) General Status
Table History
-------------
Date Prefixes
260699 60645
270699 60627
280699 60609
290699 60732
300699 60815
010799 60761
010799 60799
020799 60891
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: 5221
Number of ASes announcing only one prefix: 2716 (1491 cidr, 1225 classful)
Largest number of cidr routes: 432 announced by AS701
Largest number of classful routes: 825 announced by AS701
1) Gains by aggregating at the origin AS level
--- 02Jul99 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS271 347 144 203 58.5% BCnet Backbone
AS4293 267 158 109 40.8% IMCI
AS2609 122 27 95 77.9% EUnet-TN
AS577 281 188 93 33.1% Bell Canada Backbone
AS174 582 491 91 15.6% Performance Systems International
AS7046 326 243 83 25.5% UUNET-CUSTOMER
AS4200 186 105 81 43.5% AGIS (Apex Global Information Ser
AS7545 141 66 75 53.2% TPG Internet Pty Ltd
AS3749 137 63 74 54.0% TECNET
AS1221 487 414 73 15.0% TELSTRA-AS
AS10928 119 50 69 58.0% UNKNOWN
AS7496 99 34 65 65.7% Power Up
AS7657 201 142 59 29.4% The Internet Group Limited
AS9269 70 14 56 80.0% Hong Kong CTI
AS72 95 39 56 58.9% Schlumberger Information Network
AS4740 312 258 54 17.3% Ozemail Pty Ltd (ASN-OZEMAIL)
AS719 460 408 52 11.3% LANLINK autonomous system
AS2493 166 115 51 30.7% iSTAR Internet, Inc.
AS4755 123 74 49 39.8% Videsh Sanchar Nigam Ltd. India
AS3737 159 110 49 30.8% PenTeleData Inc. (ASN-PTD)
AS684 88 43 45 51.1% Manitoba Regional Network Backbon
AS803 78 34 44 56.4% SaskNet Backbone
AS549 221 178 43 19.5% ONet Backbone
AS6944 46 5 41 89.1% RapidSite, Inc.
AS1 485 449 36 7.4% BBNPLANET
AS6172 155 120 35 22.6% HOME-NET-1
AS1785 246 213 33 13.4% NYSERNet Backbone
AS6762 33 2 31 93.9% Telecom Italia international high
AS4307 32 1 31 96.9% SVINET-1
AS3549 132 101 31 23.5% Frontier GlobalCenter
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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