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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 Jan 7 12:00:00 PST 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A summary of the last weeks changes in terms of withdrawn and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 07Jan00
0) General Status
Table History
-------------
Date Prefixes
311299 68794
010100 68060
020100 68601
030100 69117
040100 69405
050100 69342
060100 69294
070100 69327
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: 5638
Number of ASes announcing only one prefix: 3032 (1493 cidr, 1539 classful)
Largest number of cidr routes: 623 announced by AS701
Largest number of classful routes: 953 announced by AS701
1) Gains by aggregating at the origin AS level
--- 07Jan00 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS271 383 141 242 63.2% BCnet Backbone
AS7046 426 268 158 37.1% UUNET-CUSTOMER
AS9269 134 21 113 84.3% Hong Kong CTI
AS1221 643 530 113 17.6% TELSTRA-AS
AS2609 124 18 106 85.5% EUnet-TN
AS7657 281 182 99 35.2% The Internet Group Limited
AS7545 153 60 93 60.8% TPG Internet Pty Ltd
AS1653 129 38 91 70.5% SUNET Swedish University Network
AS4293 240 153 87 36.2% Internal ASN for C&W
AS174 561 476 85 15.2% Performance Systems International
AS577 258 180 78 30.2% Bell Nexxia Backbone
AS6429 194 117 77 39.7% RDC-INTERNET
AS7496 111 36 75 67.6% Power Up
AS3749 135 61 74 54.8% TECNET
AS705 241 174 67 27.8% ALTERNET-AS
AS4200 171 105 66 38.6% AGIS (Apex Global Information Ser
AS9304 82 21 61 74.4% Hutchcity
AS816 234 178 56 23.9% UUNET Canada (ASN-UUNETCA-AS4)
AS4740 330 275 55 16.7% Ozemail Pty Ltd (ASN-OZEMAIL)
AS209 342 289 53 15.5% Qwest Communications
AS4151 107 56 51 47.7% USDA Internet Access Network
AS684 92 46 46 50.0% Manitoba Regional Network Backbon
AS4755 113 73 40 35.4% Videsh Sanchar Nigam Ltd. India
AS7568 54 16 38 70.4% C.S. Communications Co., Ltd.
AS6528 46 8 38 82.6% WORLD-LYNX
AS1 523 485 38 7.3% GTE Internetworking
AS7029 78 41 37 47.4% ALLTELNET
AS701 953 916 37 3.9% Alternet
AS7390 50 14 36 72.0% NLSLAN
AS6172 149 113 36 24.2% HOME-NET-1
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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