The Cidr Report
Tony Bates
tbates at cisco.com
Fri Jul 16 19:00:03 UTC 1999
This is an auto-generated mail on Fri Jul 16 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A summary of the last weeks changes in terms of withdrawn and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 16Jul99
0) General Status
Table History
-------------
Date Prefixes
090799 61684
100799 60957
110799 60942
120799 61016
130799 61055
140799 61223
150799 61253
160799 61126
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: 5294
Number of ASes announcing only one prefix: 2768 (1530 cidr, 1238 classful)
Largest number of cidr routes: 437 announced by AS701
Largest number of classful routes: 838 announced by AS701
1) Gains by aggregating at the origin AS level
--- 16Jul99 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS271 348 145 203 58.3% BCnet Backbone
AS4293 270 161 109 40.4% IMCI
AS2609 123 25 98 79.7% EUnet-TN
AS577 278 186 92 33.1% Bell Canada Backbone
AS174 579 490 89 15.4% Performance Systems International
AS3749 146 58 88 60.3% TECNET
AS7046 323 241 82 25.4% UUNET-CUSTOMER
AS4200 184 103 81 44.0% AGIS (Apex Global Information Ser
AS7545 139 64 75 54.0% TPG Internet Pty Ltd
AS1221 495 422 73 14.7% TELSTRA-AS
AS10928 118 51 67 56.8% UNKNOWN
AS9269 79 13 66 83.5% Hong Kong CTI
AS7496 99 33 66 66.7% Power Up
AS7657 215 151 64 29.8% The Internet Group Limited
AS6944 63 6 57 90.5% RapidSite, Inc.
AS4755 132 76 56 42.4% Videsh Sanchar Nigam Ltd. India
AS4740 312 259 53 17.0% Ozemail Pty Ltd (ASN-OZEMAIL)
AS719 459 408 51 11.1% LANLINK autonomous system
AS2493 163 112 51 31.3% iSTAR Internet, Inc.
AS684 88 43 45 51.1% Manitoba Regional Network Backbon
AS803 78 34 44 56.4% SaskNet Backbone
AS549 220 176 44 20.0% ONet Backbone
AS3737 110 69 41 37.3% PenTeleData Inc. (ASN-PTD)
AS1 495 459 36 7.3% BBNPLANET
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
AS11515 32 1 31 96.9% UNKNOWN
AS8023 43 13 30 69.8% CASTLES
AS7745 38 8 30 78.9% BIGSKY-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
More information about the NANOG
mailing list