The Cidr Report
CIDR Report
cidr-report at cisco.com
Sat Jul 6 06:00:03 UTC 2002
This is an auto-generated mail on Fri Jul 5 23:00:01 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A summary of the last weeks changes in terms of withdrawn and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 05Jul02
0) General Status
Table History
-------------
Date Prefixes
280602 111076
290602 111083
300602 111065
010702 111089
020702 111046
030702 110779
040702 110898
050702 110820
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: 13188
Number of ASes announcing only one prefix: 8046 (4527 cidr, 3519 classful)
Largest number of cidr routes: 613 announced by AS701
Largest number of classful routes: 1234 announced by AS701
1) Gains by aggregating at the origin AS level
--- 05Jul02 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS1221 1098 847 251 22.9% Telstra Pty Ltd
AS701 1234 987 247 20.0% UUNET Technologies, Inc.
AS17557 305 108 197 64.6% Pakistan Telecom
AS6595 210 58 152 72.4% DoD Education Activity Network As
AS852 482 352 130 27.0% Telus Advanced Communications
AS7018 804 675 129 16.0% AT&T
AS16473 194 76 118 60.8% Bell South
AS4151 237 142 95 40.1% USDA
AS19632 99 5 94 94.9% Metropolis Intercom S.A.
AS1239 520 426 94 18.1% Sprint
AS7303 157 69 88 56.1% Telecom Argentina Stet-France Tel
AS16814 105 20 85 81.0% NSS, S.A.
AS7046 313 230 83 26.5% UUNET Technologies, Inc.
AS226 171 88 83 48.5% Los Nettos
AS2048 180 103 77 42.8% State of Louisiana
AS4755 212 136 76 35.8% Videsh Sanchar Nigam Ltd. Autonom
AS577 262 190 72 27.5% Bell Advanced Communications Inc.
AS4323 407 338 69 17.0% Time Warner Communications, Inc.
AS724 229 161 68 29.7% DLA Systems Automation Center
AS3464 163 102 61 37.4% Alabama SuperComputer Network
AS19834 64 4 60 93.8% NetForce, Inc.
AS10620 83 23 60 72.3% TVCABLE BOGOTA
AS9498 84 27 57 67.9% BHARTI BT INTERNET LTD.
AS16758 63 6 57 90.5% IKON Office Solutions
AS1 441 384 57 12.9% GENUITY
AS9051 82 26 56 68.3% INCONET Autonomous System
AS3908 295 239 56 19.0% Supernet, Inc.
AS209 309 255 54 17.5% Qwest
AS6535 67 17 50 74.6% Chilesat Servicios Empresariales
AS702 519 473 46 8.9% UUNET Technologies, Inc.
Total 54644 42182 12462 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
More information about the NANOG
mailing list