[26848] in North American Network Operators' Group
The Cidr Report
daemon@ATHENA.MIT.EDU (Tony Bates)
Fri Jan 21 15:07:57 2000
Message-Id: <200001212000.MAA28484@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 Jan 2000 12:00:04 -0800
From: Tony Bates <tbates@cisco.com>
Errors-To: owner-nanog-outgoing@merit.edu
This is an auto-generated mail on Fri Jan 21 12:00:02 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A summary of the last weeks changes in terms of withdrawn and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 21Jan00
0) General Status
Table History
-------------
Date Prefixes
140100 69862
150100 70956
160100 70982
170100 71135
180100 70228
190100 70246
200100 70143
210100 70096
Check http://www.employees.org/~tbates/cidr.plot.html for a plot
of the table history.
Possible Bogus Routes
---------------------
*** Bogus 219.91.160.0/22 from AS7742
*** Bogus 219.91.164.0/23 from AS7742
AS Summary
----------
Number of ASes in routing system: 6488
Number of ASes announcing only one prefix: 3493 (1893 cidr, 1600 classful)
Largest number of cidr routes: 707 announced by AS701
Largest number of classful routes: 984 announced by AS701
1) Gains by aggregating at the origin AS level
--- 21Jan00 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS271 384 142 242 63.0% BCnet Backbone
AS7046 410 267 143 34.9% UUNET-CUSTOMER
AS9269 135 25 110 81.5% Hong Kong CTI
AS2609 125 16 109 87.2% EUnet-TN
AS1221 623 516 107 17.2% TELSTRA-AS
AS7657 285 185 100 35.1% The Internet Group Limited
AS7545 153 60 93 60.8% TPG Internet Pty Ltd
AS6429 206 114 92 44.7% RDC-INTERNET
AS4293 256 164 92 35.9% Internal ASN for C&W
AS2715 156 65 91 58.3% REDERIO-AS
AS174 563 479 84 14.9% Performance Systems International
AS7496 119 39 80 67.2% Power Up
AS705 270 193 77 28.5% ALTERNET-AS
AS577 253 177 76 30.0% Bell Nexxia Backbone
AS3749 135 61 74 54.8% TECNET
AS9304 94 23 71 75.5% Hutchcity
AS3602 315 249 66 21.0% Sprint Canada Inc.
AS4200 170 105 65 38.2% AGIS (Apex Global Information Ser
AS1727 138 76 62 44.9% MRMS-WEST
AS816 244 185 59 24.2% UUNET Canada (ASN-UUNETCA-AS4)
AS4740 343 285 58 16.9% Ozemail Pty Ltd (ASN-OZEMAIL)
AS7260 103 46 57 55.3% NORLIGHT
AS209 377 325 52 13.8% Qwest Communications
AS4151 94 48 46 48.9% USDA Internet Access Network
AS684 89 44 45 50.6% Manitoba Regional Network Backbon
AS4755 120 77 43 35.8% Videsh Sanchar Nigam Ltd. India
AS701 984 942 42 4.3% Alternet
AS7568 56 16 40 71.4% C.S. Communications Co., Ltd.
AS3549 154 115 39 25.3% Frontier GlobalCenter
AS11127 124 85 39 31.5% UNKNOWN
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
