[31728] in North American Network Operators' Group
The Cidr Report
daemon@ATHENA.MIT.EDU (Tony Bates)
Fri Oct 13 15:09:19 2000
Message-Id: <200010131900.MAA11903@lovefm.cisco.com>
To: nanog@merit.edu
Cc: tbates@cisco.com, eof-list@ripe.net, apops@apnic.net,
routing-wg@ripe.net
Date: Fri, 13 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 13 12:00:01 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A summary of the last weeks changes in terms of withdrawn and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 13Oct00
0) General Status
Table History
-------------
Date Prefixes
061000 88980
071000 89153
081000 89078
091000 89463
101000 88806
111000 88726
121000 88590
131000 88713
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: 8744
Number of ASes announcing only one prefix: 5030 (2804 cidr, 2226 classful)
Largest number of cidr routes: 919 announced by AS701
Largest number of classful routes: 1123 announced by AS701
1) Gains by aggregating at the origin AS level
--- 13Oct00 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS271 431 153 278 64.5% BCnet Backbone
AS1221 611 443 168 27.5% TELSTRA-AS
AS9269 178 45 133 74.7% Hong Kong CTI
AS816 535 406 129 24.1% UUNET Canada (ASN-UUNETCA-AS4)
AS2609 128 8 120 93.8% EUnet-TN
AS9304 125 15 110 88.0% Hutchcity
AS6429 222 112 110 49.5% FirstCom Internet
AS4755 221 112 109 49.3% Videsh Sanchar Nigam Ltd. India
AS7545 158 54 104 65.8% TPG Internet Pty Ltd
AS705 363 262 101 27.8% ALTERNET-AS
AS7046 345 252 93 27.0% UUNET-CUSTOMER
AS7496 124 33 91 73.4% Power Up
AS7657 308 221 87 28.2% The Internet Group Limited
AS174 541 455 86 15.9% Performance Systems International
AS4293 342 260 82 24.0% Internal ASN for C&W
AS13999 91 9 82 90.1% UNKNOWN
AS8013 441 360 81 18.4% PSINET-CA
AS6595 137 56 81 59.1% DODDSEUR
AS3908 254 175 79 31.1% Supernet, Inc.
AS701 1123 1045 78 6.9% Alternet
AS577 248 175 73 29.4% Bell Backbone
AS724 222 155 67 30.2% DLA-ASNBLOCK-AS
AS7018 574 508 66 11.5% AT&T WorldNet Service Backbone
AS1727 150 85 65 43.3% MRMS-WEST
AS5106 100 37 63 63.0% AADS-COLUMBUS
AS3749 122 60 62 50.8% TECNET
AS226 168 106 62 36.9% USC/Information Sciences Institut
AS16758 63 6 57 90.5% UNKNOWN
AS376 129 74 55 42.6% RISQ
AS8151 179 125 54 30.2% 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
