[30253] in North American Network Operators' Group
The Cidr Report
daemon@ATHENA.MIT.EDU (Tony Bates)
Fri Jul 21 15:06:57 2000
Message-Id: <200007211900.MAA24242@lovefm.cisco.com>
To: nanog@merit.edu
Cc: tbates@cisco.com, eof-list@ripe.net, apops@apnic.net,
routing-wg@ripe.net
Date: Fri, 21 Jul 2000 12:00:02 -0700
From: Tony Bates <tbates@cisco.com>
Errors-To: owner-nanog-outgoing@merit.edu
This is an auto-generated mail on Fri Jul 21 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A summary of the last weeks changes in terms of withdrawn and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 21Jul00
0) General Status
Table History
-------------
Date Prefixes
140700 82006
150700 82099
160700 81998
170700 81940
180700 82120
190700 82574
200700 82381
210700 82529
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: 7959
Number of ASes announcing only one prefix: 4467 (2482 cidr, 1985 classful)
Largest number of cidr routes: 964 announced by AS701
Largest number of classful routes: 1068 announced by AS701
1) Gains by aggregating at the origin AS level
--- 21Jul00 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS271 436 149 287 65.8% BCnet Backbone
AS7046 638 397 241 37.8% COQUI-NET PRTC Internet
AS1221 560 401 159 28.4% TELSTRA-AS
AS9706 154 21 133 86.4% Pusan Metropolitan City Office of
AS2609 128 8 120 93.8% EUnet-TN
AS7657 295 187 108 36.6% The Internet Group Limited
AS9304 123 17 106 86.2% Hutchcity
AS7545 155 57 98 63.2% TPG Internet Pty Ltd
AS6429 213 115 98 46.0% RDC-INTERNET
AS9269 154 63 91 59.1% Hong Kong CTI
AS7496 126 38 88 69.8% Power Up
AS4293 334 247 87 26.0% Internal ASN for C&W
AS174 553 467 86 15.6% Performance Systems International
AS577 256 171 85 33.2% Bell Backbone
AS705 327 250 77 23.5% ALTERNET-AS
AS724 218 150 68 31.2% DLA-ASNBLOCK-AS
AS1727 161 94 67 41.6% MRMS-WEST
AS3908 256 190 66 25.8% Supernet, Inc.
AS701 1068 1007 61 5.7% Alternet
AS6595 112 51 61 54.5% DODDSEUR
AS5106 95 35 60 63.2% AADS-COLUMBUS
AS3749 121 62 59 48.8% TECNET
AS7568 81 24 57 70.4% C.S. Communications Co., Ltd.
AS7018 551 494 57 10.3% AT&T WorldNet Service Backbone
AS3602 300 244 56 18.7% Sprint Canada Inc.
AS4755 154 101 53 34.4% Videsh Sanchar Nigam Ltd. India
AS4740 323 271 52 16.1% Ozemail Pty Ltd (ASN-OZEMAIL)
AS7993 78 28 50 64.1% Global One Communications
AS1785 359 311 48 13.4% NYSERNet Backbone
AS11252 86 38 48 55.8% Idaho State University
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
