[apops] The Cidr Report
This is an auto-generated mail on Fri Nov 3 12:00:00 PST 2000
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A summary of the last weeks changes in terms of withdrawn and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 03Nov00
0) General Status
Table History
-------------
Date Prefixes
281000 89474
291000 89460
291000 89478
301000 89458
311000 89649
011100 90189
021100 91627
031100 90444
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: 8951
Number of ASes announcing only one prefix: 5138 (2860 cidr, 2278 classful)
Largest number of cidr routes: 921 announced by AS701
Largest number of classful routes: 1178 announced by AS701
1) Gains by aggregating at the origin AS level
--- 03Nov00 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS271 431 150 281 65.2% BCnet Backbone
AS1221 604 450 154 25.5% TELSTRA-AS
AS2609 128 8 120 93.8% EUnet-TN
AS4755 201 101 100 49.8% Videsh Sanchar Nigam Ltd. India
AS174 538 453 85 15.8% Performance Systems International
AS4293 340 258 82 24.1% Internal ASN for C&W
AS13999 91 9 82 90.1% UNKNOWN
AS3908 252 173 79 31.3% Supernet, Inc.
AS577 244 174 70 28.7% Bell Backbone
AS5106 101 37 64 63.4% AADS-COLUMBUS
AS3749 119 58 61 51.3% TECNET
AS226 167 106 61 36.5% USC/Information Sciences Institut
AS16758 63 6 57 90.5% UNKNOWN
AS376 132 76 56 42.4% RISQ
AS1727 135 82 53 39.3% MRMS-WEST
AS11252 90 37 53 58.9% Idaho State University
AS3602 294 242 52 17.7% Sprint Canada Inc.
AS5102 74 24 50 67.6% AADS-CHAMPAIGN
AS4740 312 262 50 16.0% Ozemail Pty Ltd (ASN-OZEMAIL)
AS6429 149 101 48 32.2% FirstCom Internet
AS1 631 583 48 7.6% GTE Internetworking
AS209 272 227 45 16.5% Qwest Communications
AS549 192 148 44 22.9% ONet Backbone
AS1239 483 441 42 8.7% SprintLink Backbone
AS6082 145 105 40 27.6% HarvardNet, Inc
AS4151 89 50 39 43.8% USDA Internet Access Network
AS12235 43 4 39 90.7% Cove Software Systems Inc
AS1267 60 23 37 61.7% Infostrada S.p.A.
AS14 50 14 36 72.0% Columbia University in the City o
AS637 55 20 35 63.6% PENS-NET-AS
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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