[29450] in North American Network Operators' Group
The Cidr Report
daemon@ATHENA.MIT.EDU (Tony Bates)
Fri Jun 23 15:06:51 2000
Message-Id: <200006231900.MAA19962@lovefm.cisco.com>
To: nanog@merit.edu
Cc: tbates@cisco.com, eof-list@ripe.net, apops@apnic.net,
routing-wg@ripe.net
Date: Fri, 23 Jun 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 Jun 23 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A summary of the last weeks changes in terms of withdrawn and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 23Jun00
0) General Status
Table History
-------------
Date Prefixes
160600 80091
170600 79759
180600 80139
190600 79957
200600 79704
210600 80023
220600 80240
230600 80236
Check http://www.employees.org/~tbates/cidr.plot.html for a plot
of the table history.
Possible Bogus Routes
---------------------
*** Bogus 65.56.64.0/21 from AS2941
AS Summary
----------
Number of ASes in routing system: 7723
Number of ASes announcing only one prefix: 4350 (2384 cidr, 1966 classful)
Largest number of cidr routes: 939 announced by AS701
Largest number of classful routes: 1047 announced by AS701
1) Gains by aggregating at the origin AS level
--- 23Jun00 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS271 439 151 288 65.6% BCnet Backbone
AS7046 534 360 174 32.6% COQUI-NET PRTC Internet
AS1221 583 411 172 29.5% TELSTRA-AS
AS9269 192 50 142 74.0% Hong Kong CTI
AS9706 154 21 133 86.4% Pusan Metropolitan City Office of
AS2609 127 12 115 90.6% EUnet-TN
AS7657 273 170 103 37.7% The Internet Group Limited
AS9304 121 22 99 81.8% Hutchcity
AS7545 167 68 99 59.3% TPG Internet Pty Ltd
AS174 568 476 92 16.2% Performance Systems International
AS6429 208 118 90 43.3% RDC-INTERNET
AS7496 127 42 85 66.9% Power Up
AS4293 326 241 85 26.1% Internal ASN for C&W
AS705 340 260 80 23.5% ALTERNET-AS
AS577 248 176 72 29.0% Bell Backbone
AS724 229 158 71 31.0% DLA-ASNBLOCK-AS
AS9557 97 29 68 70.1% Pakistan Telecommunication Compan
AS701 1047 981 66 6.3% Alternet
AS1727 148 82 66 44.6% MRMS-WEST
AS3602 305 245 60 19.7% Sprint Canada Inc.
AS3749 118 59 59 50.0% TECNET
AS5106 87 29 58 66.7% AADS-COLUMBUS
AS6595 106 49 57 53.8% DODDSEUR
AS4740 329 273 56 17.0% Ozemail Pty Ltd (ASN-OZEMAIL)
AS7018 541 487 54 10.0% AT&T WorldNet Service Backbone
AS7568 70 17 53 75.7% C.S. Communications Co., Ltd.
AS1785 363 314 49 13.5% NYSERNet Backbone
AS209 264 216 48 18.2% Qwest Communications
AS1 616 572 44 7.1% GTE Internetworking
AS6499 96 55 41 42.7% Brooks Fiber Properties, Inc.
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
