[32873] in North American Network Operators' Group
The Cidr Report
daemon@ATHENA.MIT.EDU (Tony Bates)
Fri Dec 15 15:09:02 2000
Message-Id: <200012152000.MAA14974@lovefm.cisco.com>
To: nanog@merit.edu
Cc: tbates@cisco.com, eof-list@ripe.net, apops@apnic.net,
routing-wg@ripe.net
Date: Fri, 15 Dec 2000 12:00:03 -0800
From: Tony Bates <tbates@cisco.com>
Errors-To: owner-nanog-outgoing@merit.edu
This is an auto-generated mail on Fri Dec 15 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A summary of the last weeks changes in terms of withdrawn and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.
------------------------------------------------------------------------------
CIDR REPORT for 15Dec00
0) General Status
Table History
-------------
Date Prefixes
081200 95404
091200 95823
101200 95806
111200 95907
121200 95679
131200 95592
141200 95583
151200 95822
Check http://www.employees.org/~tbates/cidr.plot.html for a plot
of the table history.
Possible Bogus Routes
---------------------
*** Bogus 91.16.23.0/24 from AS11770
*** Bogus 219.219.219.0 from AS2563
AS Summary
----------
Number of ASes in routing system: 9359
Number of ASes announcing only one prefix: 5425 (3034 cidr, 2391 classful)
Largest number of cidr routes: 1190 announced by AS705
Largest number of classful routes: 1678 announced by AS1221
1) Gains by aggregating at the origin AS level
--- 15Dec00 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS1221 1678 1238 440 26.2% TELSTRA-AS
AS2563 264 82 182 68.9% KoRean Education Network
AS701 1593 1434 159 10.0% Alternet
AS271 284 131 153 53.9% BCnet Backbone
AS9269 167 48 119 71.3% Hong Kong CTI
AS7545 166 50 116 69.9% TPG Internet Pty Ltd
AS8013 455 349 106 23.3% PSINET-CA
AS6595 162 63 99 61.1% DODDSEUR
AS7657 277 188 89 32.1% The Internet Group Limited
AS13999 94 6 88 93.6% UNKNOWN
AS705 326 242 84 25.8% ALTERNET-AS
AS4755 189 105 84 44.4% Videsh Sanchar Nigam Ltd. India
AS174 530 449 81 15.3% Performance Systems International
AS4293 340 260 80 23.5% Internal ASN for C&W
AS7496 100 23 77 77.0% Power Up
AS7046 328 251 77 23.5% UUNET-CUSTOMER
AS4151 282 208 74 26.2% USDA Internet Access Network
AS724 243 170 73 30.0% DLA-ASNBLOCK-AS
AS1727 172 99 73 42.4% MRMS-WEST
AS3908 236 164 72 30.5% Supernet, Inc.
AS1942 137 65 72 52.6% FR-CICG-GRENOBLE
AS577 242 171 71 29.3% Bell Backbone
AS7018 594 528 66 11.1% AT&T WorldNet Service Backbone
AS5106 101 37 64 63.4% AADS-COLUMBUS
AS3749 123 59 64 52.0% TECNET
AS226 167 104 63 37.7% USC/Information Sciences Institut
AS3602 307 249 58 18.9% Sprint Canada Inc.
AS2548 366 308 58 15.8% DIGEX-AS
AS16758 63 6 57 90.5% UNKNOWN
AS376 133 77 56 42.1% RISQ
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
