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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical The Cidr Report
This is an auto-generated mail on Fri Aug 20 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A summary of the last weeks changes in terms of withdrawn and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.
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CIDR REPORT for 20Aug99
0) General Status
Table History
-------------
Date Prefixes
130899 63211
140899 63141
150899 62759
160899 63207
170899 63568
180899 62556
190899 62479
200899 62592
Check http://www.employees.org/~tbates/cidr.plot.html for a plot
of the table history.
Possible Bogus Routes
---------------------
AS Summary
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Number of ASes in routing system: 5048
Number of ASes announcing only one prefix: 2612 (1328 cidr, 1284 classful)
Largest number of cidr routes: 445 announced by AS701
Largest number of classful routes: 835 announced by AS701
1) Gains by aggregating at the origin AS level
--- 20Aug99 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS271 335 145 190 56.7% BCnet Backbone
AS2609 127 13 114 89.8% EUnet-TN
AS1221 555 455 100 18.0% TELSTRA-AS
AS577 290 196 94 32.4% Bell Canada Backbone
AS174 574 480 94 16.4% Performance Systems International
AS4293 235 145 90 38.3% IMCI
AS7046 319 234 85 26.6% UUNET-CUSTOMER
AS7657 237 160 77 32.5% The Internet Group Limited
AS7545 140 65 75 53.6% TPG Internet Pty Ltd
AS4200 176 101 75 42.6% AGIS (Apex Global Information Ser
AS3749 139 64 75 54.0% TECNET
AS209 318 243 75 23.6% Qwest Communications
AS7496 108 34 74 68.5% Power Up
AS10928 118 48 70 59.3% UNKNOWN
AS9269 88 19 69 78.4% Hong Kong CTI
AS1785 372 311 61 16.4% NYSERNet Backbone
AS6944 63 6 57 90.5% RapidSite, Inc.
AS4755 136 79 57 41.9% Videsh Sanchar Nigam Ltd. India
AS4740 359 304 55 15.3% Ozemail Pty Ltd (ASN-OZEMAIL)
AS719 462 410 52 11.3% LANLINK autonomous system
AS2493 156 107 49 31.4% iSTAR Internet, Inc.
AS684 92 46 46 50.0% Manitoba Regional Network Backbon
AS549 209 169 40 19.1% ONet Backbone
AS3737 102 65 37 36.3% PenTeleData Inc. (ASN-PTD)
AS1 506 469 37 7.3% BBNPLANET
AS10724 42 8 34 81.0% UNKNOWN
AS4307 32 1 31 96.9% SVINET-1
AS10479 40 9 31 77.5% ITESM-Rectoria Zona Norte
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
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