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The Cidr Report
This is an auto-generated mail on Fri Nov 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.
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A summary of the last weeks changes in terms of withdrawn and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 16Nov01
0) General Status
Table History
-------------
Date Prefixes
091101 105100
101101 105013
111101 104996
121101 104919
131101 105175
141101 105033
151101 105133
161101 105107
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: 8932
Number of ASes announcing only one prefix: 4062 (4062 cidr, 0 classful)
Largest number of cidr routes: 798 announced by AS701
Largest number of classful routes: 0 announced by
1) Gains by aggregating at the origin AS level
--- 16Nov01 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS1221 1209 929 280 23.2% Telstra Pty Ltd
AS4151 318 181 137 43.1% USDA
AS16473 202 77 125 61.9% Bell South
AS577 308 190 118 38.3% Bell Advanced Communications Inc.
AS4293 360 256 104 28.9% Cable & Wireless USA
AS4755 272 169 103 37.9% Videsh Sanchar Nigam Ltd. Autonom
AS2048 213 116 97 45.5% State of Louisiana
AS1239 482 406 76 15.8% Sprint
AS2149 387 318 69 17.8% Performance Systems, Inc.
AS17557 142 74 68 47.9% Pakistan Telecom
AS19632 75 8 67 89.3% Metropolis Intercom S.A.
AS12302 105 38 67 63.8% MobiFon S.A.
AS6471 133 67 66 49.6% ENTEL CHILE S.A.
AS4200 126 61 65 51.6% Apex Global Information Services,
AS3464 160 96 64 40.0% Alabama SuperComputer Network
AS4323 338 276 62 18.3% Time Warner Communications, Inc.
AS16758 63 6 57 90.5% IKON Office Solutions
AS13999 70 14 56 80.0% Mega Cable S.A. de C.V.
AS3908 299 247 52 17.4% Supernet, Inc.
AS209 295 244 51 17.3% Qwest
AS17561 113 62 51 45.1% Internet service provision to Wes
AS376 124 74 50 40.3% Reseau Interordinateurs Scientiqu
AS16814 65 18 47 72.3% NSS, S.A.
AS10292 73 27 46 63.0% TELECOMMUNICATIONS OF JAMAICA
AS1 512 466 46 9.0% BBN Planet
AS11139 92 47 45 48.9% Cable & Wireless Dominica
AS10620 67 22 45 67.2% TVCABLE BOGOTA
AS15290 244 201 43 17.6% AT&T Canada IES
AS5416 51 9 42 82.4% BATELCO-BH
AS1267 68 26 42 61.8% Infostrada S.p.A.
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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