The Cidr Report
Tony Bates
tbates at cisco.com
Fri Jun 18 19:00:02 UTC 1999
This is an auto-generated mail on Fri Jun 18 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A summary of the last weeks changes in terms of withdrawn and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 18Jun99
0) General Status
Table History
-------------
Date Prefixes
110699 59966
120699 59973
130699 59896
140699 60007
150699 60030
160699 60041
170699 60131
180699 60164
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: 3790
Number of ASes announcing only one prefix: 1523 (344 cidr, 1179 classful)
Largest number of cidr routes: 79 announced by AS2652
Largest number of classful routes: 811 announced by AS701
1) Gains by aggregating at the origin AS level
--- 18Jun99 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS271 350 148 202 57.7% BCnet Backbone
AS4293 255 150 105 41.2% IMCI
AS577 280 187 93 33.2% Bell Canada Backbone
AS174 582 490 92 15.8% Performance Systems International
AS7046 318 240 78 24.5% UUNET-CUSTOMER
AS4200 179 101 78 43.6% AGIS (Apex Global Information Ser
AS3749 137 63 74 54.0% TECNET
AS7545 128 62 66 51.6% TPG Internet Pty Ltd
AS7496 98 32 66 67.3% Power Up
AS7122 139 78 61 43.9% MTS ADVANCED Network Policy
AS1221 452 392 60 13.3% TELSTRA-AS
AS1239 540 481 59 10.9% SprintLink Backbone
AS4755 134 76 58 43.3% Videsh Sanchar Nigam Ltd. India
AS9269 66 9 57 86.4% Hong Kong CTI
AS7657 184 127 57 31.0% The Internet Group Limited
AS72 95 39 56 58.9% Schlumberger Information Network
AS4740 317 261 56 17.7% Ozemail Pty Ltd (ASN-OZEMAIL)
AS10928 99 45 54 54.5% UNKNOWN
AS2493 171 118 53 31.0% iSTAR Internet, Inc.
AS719 462 410 52 11.3% LANLINK autonomous system
AS3737 159 110 49 30.8% PenTeleData Inc. (ASN-PTD)
AS549 222 178 44 19.8% ONet Backbone
AS803 73 37 36 49.3% SaskNet Backbone
AS3549 154 119 35 22.7% Frontier GlobalCenter
AS6944 37 3 34 91.9% RapidSite, Inc.
AS6172 153 119 34 22.2% HOME-NET-1
AS1 478 444 34 7.1% BBNPLANET
AS1785 246 214 32 13.0% NYSERNet Backbone
AS11515 32 1 31 96.9% UNKNOWN
AS10479 36 5 31 86.1% ITESM-Rectoria Zona Norte
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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