The Cidr Report
Tony Bates
tbates at cisco.com
Sat Feb 17 07:00:02 UTC 2001
This is an auto-generated mail on Fri Feb 16 23:00:00 PST 2001
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A summary of the last weeks changes in terms of withdrawn and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 16Feb01
0) General Status
Table History
-------------
Date Prefixes
050201 96681
060201 96726
070201 96978
080201 97041
090201 97137
100201 96880
110201 96509
120201 96907
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: 6307
Number of ASes announcing only one prefix: 2489 (0 cidr, 2489 classful)
Largest number of cidr routes: 0 announced by
Largest number of classful routes: 1648 announced by AS701
1) Gains by aggregating at the origin AS level
--- 16Feb01 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS1221 1623 1207 416 25.6% Telstra Pty Ltd
AS701 1648 1453 195 11.8% UUNET Technologies, Inc.
AS271 283 130 153 54.1% University of British Columbia
AS8006 146 13 133 91.1% Systems & Software Consortium, In
AS7545 196 71 125 63.8% ASNBLK-APNIC-AS-2-BLOCK
AS9269 168 46 122 72.6% ASNBLK-APNIC-AS-3-BLOCK
AS6429 218 110 108 49.5% RdC Internet
AS6595 163 62 101 62.0% DoD Education Activity Network As
AS8013 435 338 97 22.3% PSINet Ltd. Canada
AS13999 107 10 97 90.7% Mega Cable S.A. de C.V.
AS4293 375 282 93 24.8% Cable & Wireless USA
AS7496 104 23 81 77.9% ASNBLK-APNIC-AS-2-BLOCK
AS4151 251 170 81 32.3% USDA
AS705 314 235 79 25.2% UUNET Technologies, Inc.
AS4755 206 134 72 35.0% ASN-APNIC-AS-BLOCK-ASNBLOCK
AS1942 137 65 72 52.6% FR-CICG-GRENOBLE
AS7046 325 255 70 21.5% UUNET Technologies, Inc.
AS7018 611 541 70 11.5% AT&T
AS577 236 167 69 29.2% Bell Advanced Communications Inc.
AS174 500 432 68 13.6% PSINet Inc.
AS1727 161 93 68 42.2% Commander Naval Surface force US
AS9498 88 21 67 76.1% BHARTI BT INTERNET LTD.
AS724 219 152 67 30.6% DLA Systems Automation Center
AS5106 101 37 64 63.4% Ameritech Advanced Data Services,
AS3464 153 92 61 39.9% Alabama SuperComputer Network
AS226 155 95 60 38.7% Los Nettos
AS7657 184 126 58 31.5% ASNBLK-APNIC-AS-2-BLOCK
AS3749 115 57 58 50.4% Tennessee Board of Regents
AS16758 63 6 57 90.5% IKON Office Solutions
AS6413 67 11 56 83.6% Southern Online Systems, 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
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