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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 Oct 20 12:00:00 PDT 2000
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A summary of the last weeks changes in terms of withdrawn and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 20Oct00
0) General Status
Table History
-------------
Date Prefixes
131000 88713
141000 88736
151000 88773
161000 88779
171000 88976
181000 89084
191000 89049
201000 89411
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: 8803
Number of ASes announcing only one prefix: 5049 (2823 cidr, 2226 classful)
Largest number of cidr routes: 930 announced by AS701
Largest number of classful routes: 1133 announced by AS701
1) Gains by aggregating at the origin AS level
--- 20Oct00 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS271 431 152 279 64.7% BCnet Backbone
AS1221 590 439 151 25.6% TELSTRA-AS
AS816 595 454 141 23.7% UUNET Canada (ASN-UUNETCA-AS4)
AS9269 177 46 131 74.0% Hong Kong CTI
AS2609 128 8 120 93.8% EUnet-TN
AS9304 130 17 113 86.9% Hutchcity
AS6429 222 112 110 49.5% FirstCom Internet
AS7545 159 55 104 65.4% TPG Internet Pty Ltd
AS8013 467 364 103 22.1% PSINET-CA
AS7046 355 254 101 28.5% UUNET-CUSTOMER
AS4755 200 101 99 49.5% Videsh Sanchar Nigam Ltd. India
AS705 356 259 97 27.2% ALTERNET-AS
AS7657 313 220 93 29.7% The Internet Group Limited
AS7496 126 35 91 72.2% Power Up
AS174 539 453 86 16.0% Performance Systems International
AS4293 341 259 82 24.0% Internal ASN for C&W
AS13999 91 9 82 90.1% UNKNOWN
AS701 1133 1052 81 7.1% Alternet
AS6595 137 56 81 59.1% DODDSEUR
AS3908 251 172 79 31.5% Supernet, Inc.
AS577 249 176 73 29.3% Bell Backbone
AS724 220 153 67 30.5% DLA-ASNBLOCK-AS
AS7018 574 508 66 11.5% AT&T WorldNet Service Backbone
AS5106 100 37 63 63.0% AADS-COLUMBUS
AS226 168 106 62 36.9% USC/Information Sciences Institut
AS3749 121 61 60 49.6% TECNET
AS16758 63 6 57 90.5% UNKNOWN
AS8151 181 126 55 30.4% UNINET-MX
AS8895 97 43 54 55.7% Saudi Arabia AS
AS7568 78 24 54 69.2% C.S. Communications Co., Ltd.
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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