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The Cidr Report
This is an auto-generated mail on Fri Dec 28 23:00:01 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.
Check http://www.employees.org/~tbates/cidr-report.html for a daily
update of this report.
NEW: Check http://www.employees.org/~tbates/cidr-report-region.html for
the regional version of this report.
NEW: Check http://www.employees.org/~tbates/autnums.html for a complete
list of autonomous system number to name mappings as used by the CIDR-Report.
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A summary of the last weeks changes in terms of withdrawn and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 GX Networks for giving me access to their routing tables once a
day.
Please send any comments about this report directly to CIDR Report <cidr-report at cisco.com>.
------------------------------------------------------------------------------
CIDR REPORT for 28Dec01
0) General Status
Table History
-------------
Date Prefixes
211201 104932
221201 104791
231201 104801
241201 104769
251201 104805
261201 104705
271201 104655
281201 104604
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: 12178
Number of ASes announcing only one prefix: 7353 (4159 cidr, 3194 classful)
Largest number of cidr routes: 768 announced by AS701
Largest number of classful routes: 1362 announced by AS701
1) Gains by aggregating at the origin AS level
--- 28Dec01 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS1221 1178 908 270 22.9% Telstra Pty Ltd
AS701 1362 1132 230 16.9% UUNET Technologies, Inc.
AS4151 292 158 134 45.9% USDA
AS577 319 195 124 38.9% Bell Advanced Communications Inc.
AS16473 198 77 121 61.1% Bell South
AS7018 812 696 116 14.3% AT&T
AS705 284 181 103 36.3% UUNET Technologies, Inc.
AS852 410 312 98 23.9% Telus Advanced Communications
AS6595 147 50 97 66.0% DoD Education Activity Network As
AS17557 169 82 87 51.5% Pakistan Telecom
AS7046 308 222 86 27.9% UUNET Technologies, Inc.
AS19632 93 10 83 89.2% Metropolis Intercom S.A.
AS8010 120 38 82 68.3% PublicNet Communications, Inc.
AS4755 216 136 80 37.0% Videsh Sanchar Nigam Ltd. Autonom
AS1239 486 407 79 16.3% Sprint
AS2048 182 106 76 41.8% State of Louisiana
AS12302 109 33 76 69.7% MobiFon S.A.
AS724 231 166 65 28.1% DLA Systems Automation Center
AS703 283 221 62 21.9% UUNET Technologies, Inc.
AS3464 155 97 58 37.4% Alabama SuperComputer Network
AS16758 63 6 57 90.5% IKON Office Solutions
AS3908 321 265 56 17.4% Supernet, Inc.
AS13999 70 14 56 80.0% Mega Cable S.A. de C.V.
AS6471 121 66 55 45.5% ENTEL CHILE S.A.
AS19834 63 8 55 87.3% NetForce, Inc.
AS1 509 454 55 10.8% BBN Planet
AS4323 366 312 54 14.8% Time Warner Communications, Inc.
AS2149 323 270 53 16.4% Performance Systems, Inc.
AS4200 103 51 52 50.5% Apex Global Information Services,
AS209 297 246 51 17.2% Qwest
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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