[31908] in North American Network Operators' Group
The Cidr Report
daemon@ATHENA.MIT.EDU (Tony Bates)
Fri Oct 27 15:05:38 2000
Message-Id: <200010271900.MAA14715@lovefm.cisco.com>
To: nanog@merit.edu
Cc: tbates@cisco.com, eof-list@ripe.net, apops@apnic.net,
routing-wg@ripe.net
Date: Fri, 27 Oct 2000 12:00:04 -0700
From: Tony Bates <tbates@cisco.com>
Errors-To: owner-nanog-outgoing@merit.edu
This is an auto-generated mail on Fri Oct 27 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A summary of the last weeks changes in terms of withdrawn and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.
------------------------------------------------------------------------------
CIDR REPORT for 27Oct00
0) General Status
Table History
-------------
Date Prefixes
201000 89411
211000 89037
221000 89088
231000 89255
241000 89314
251000 89441
261000 89651
271000 89717
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: 8876
Number of ASes announcing only one prefix: 5070 (2831 cidr, 2239 classful)
Largest number of cidr routes: 923 announced by AS701
Largest number of classful routes: 1138 announced by AS701
1) Gains by aggregating at the origin AS level
--- 27Oct00 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS271 421 148 273 64.8% BCnet Backbone
AS1221 590 439 151 25.6% TELSTRA-AS
AS9269 180 47 133 73.9% Hong Kong CTI
AS816 549 421 128 23.3% UUNET Canada (ASN-UUNETCA-AS4)
AS2609 128 8 120 93.8% EUnet-TN
AS6429 226 112 114 50.4% FirstCom Internet
AS9304 130 17 113 86.9% Hutchcity
AS8013 464 360 104 22.4% PSINET-CA
AS7545 159 55 104 65.4% TPG Internet Pty Ltd
AS4755 200 102 98 49.0% Videsh Sanchar Nigam Ltd. India
AS705 356 259 97 27.2% ALTERNET-AS
AS7657 312 217 95 30.4% The Internet Group Limited
AS7046 347 255 92 26.5% UUNET-CUSTOMER
AS7496 128 37 91 71.1% Power Up
AS174 542 456 86 15.9% Performance Systems International
AS701 1138 1055 83 7.3% Alternet
AS4293 340 258 82 24.1% Internal ASN for C&W
AS13999 91 9 82 90.1% UNKNOWN
AS6595 138 57 81 58.7% DODDSEUR
AS3908 251 172 79 31.5% Supernet, Inc.
AS577 247 176 71 28.7% Bell Backbone
AS724 218 151 67 30.7% DLA-ASNBLOCK-AS
AS7018 582 516 66 11.3% AT&T WorldNet Service Backbone
AS5106 100 37 63 63.0% AADS-COLUMBUS
AS226 169 107 62 36.7% USC/Information Sciences Institut
AS3749 118 57 61 51.7% TECNET
AS1727 149 88 61 40.9% MRMS-WEST
AS16758 63 6 57 90.5% UNKNOWN
AS376 131 75 56 42.7% RISQ
AS8151 180 126 54 30.0% UNINET-MX
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
