The Cidr Report
CIDR Report
cidr-report at cisco.com
Sat Jul 13 06:00:02 UTC 2002
This is an auto-generated mail on Fri Jul 12 23:00:00 PDT 2002
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A summary of the last weeks changes in terms of withdrawn and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 amount 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 12Jul02
0) General Status
Table History
-------------
Date Prefixes
050702 110820
060702 111129
070702 111069
080702 111088
090702 111212
100702 111153
110702 111369
120702 111339
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: 13208
Number of ASes announcing only one prefix: 8040 (4516 cidr, 3524 classful)
Largest number of cidr routes: 615 announced by AS3908
Largest number of classful routes: 1230 announced by AS701
1) Gains by aggregating at the origin AS level
--- 12Jul02 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS1221 1089 840 249 22.9% Telstra Pty Ltd
AS701 1230 982 248 20.2% UUNET Technologies, Inc.
AS17557 304 107 197 64.8% Pakistan Telecom
AS6595 221 54 167 75.6% DoD Education Activity Network As
AS852 549 407 142 25.9% Telus Advanced Communications
AS7018 794 668 126 15.9% AT&T
AS16473 195 77 118 60.5% Bell South
AS7303 167 72 95 56.9% Telecom Argentina Stet-France Tel
AS4151 235 140 95 40.4% USDA
AS19632 99 5 94 94.9% Metropolis Intercom S.A.
AS1239 519 425 94 18.1% Sprint
AS12302 118 30 88 74.6% MobiFon S.A.
AS16814 105 20 85 81.0% NSS, S.A.
AS7046 315 231 84 26.7% UUNET Technologies, Inc.
AS2048 181 103 78 43.1% State of Louisiana
AS2149 367 294 73 19.9% Performance Systems, Inc.
AS577 262 190 72 27.5% Bell Advanced Communications Inc.
AS724 231 163 68 29.4% DLA Systems Automation Center
AS4323 402 334 68 16.9% Time Warner Communications, Inc.
AS3464 163 102 61 37.4% Alabama SuperComputer Network
AS19834 64 4 60 93.8% NetForce, Inc.
AS10620 84 24 60 71.4% TVCABLE BOGOTA
AS1 444 386 58 13.1% GENUITY
AS16758 63 6 57 90.5% IKON Office Solutions
AS3908 296 240 56 18.9% Supernet, Inc.
AS209 310 254 56 18.1% Qwest
AS9498 83 28 55 66.3% BHARTI BT INTERNET LTD.
AS9051 81 29 52 64.2% INCONET Autonomous System
AS6535 65 16 49 75.4% Chilesat Servicios Empresariales
AS703 271 225 46 17.0% UUNET Technologies, Inc.
Total 54793 42301 12492 22.8%
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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