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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical The Cidr Report
This is an auto-generated mail on Fri May 25 23:00:00 PDT 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.
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A summary of the last weeks changes in terms of withdrawn and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.
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CIDR REPORT for 25May01
0) General Status
Table History
-------------
Date Prefixes
040501 104512
050501 104646
060501 104816
070501 106340
080501 105979
230501 101875
240501 101755
250501 101869
Check http://www.employees.org/~tbates/cidr.plot.html for a plot
of the table history.
Possible Bogus Routes
---------------------
*** Bogus 80.9.0.0/18 from AS3215
*** Bogus 80.9.128.0/18 from AS3215
*** Bogus 80.64.0.0/20 from AS3246
*** Bogus 80.64.128.0/20 from AS20751
*** Bogus 80.64.224.0/20 from AS3259
*** Bogus 80.65.128.0/20 from AS9057
*** Bogus 80.65.224.0/20 from AS13193
*** Bogus 80.66.32.0/20 from AS702
*** Bogus 80.66.128.0/20 from AS1239
*** Bogus 80.67.0.0/20 from AS20750
*** Bogus 80.67.32.0/20 from AS20752
*** Bogus 218.2.0.0/15 from AS4134
*** Bogus 218.4.0.0/16 from AS4134
*** Bogus 218.6.128.0/17 from AS4134
AS Summary
----------
Number of ASes in routing system: 10851
Number of ASes announcing only one prefix: 6431 (3657 cidr, 2774 classful)
Largest number of cidr routes: 975 announced by AS701
Largest number of classful routes: 1409 announced by AS701
1) Gains by aggregating at the origin AS level
--- 25May01 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS1221 1391 1031 360 25.9% TELSTRA-AS
AS13999 103 11 92 89.3% autonomous system number assigned
AS11252 91 33 58 63.7% autonomous system number assigned
AS226 150 93 57 38.0% Los Nettos
AS16758 63 6 57 90.5% autonomous system number assigned
AS2149 320 265 55 17.2% PSINET-2
AS1 592 539 53 9.0% GTE Internetworking
AS11686 143 91 52 36.4% Education Networks of America
AS10692 66 14 52 78.8% DLS Internet Services AS10692
AS17561 111 60 51 45.9% UNKNOWN
AS13544 69 22 47 68.1% autonomous system number assigned
AS11774 74 28 46 62.2% AS 11774 Object
AS1267 67 25 42 62.7% Infostrada S.p.A.
AS1237 94 52 42 44.7% KISTI
AS1239 441 400 41 9.3% SprintLink Backbone
AS12235 48 7 41 85.4% Cove Software Systems Inc
AS2652 113 75 38 33.6% Government of Canada (GENet) back
AS209 263 226 37 14.1% Qwest Communications
AS19834 49 12 37 75.5% autonomous system number assigned
AS18447 46 9 37 80.4% autonomous system number assigned
AS13345 67 30 37 55.2% autonomous system number assigned
AS14 51 15 36 70.6% Columbia University in the City o
AS12302 63 28 35 55.6% MobiFon S.A.
AS2007 153 119 34 22.2% Infonet Services Corporation
AS11507 87 53 34 39.1% TouchAmerica Montana
AS10620 52 18 34 65.4% autonomous system number assigned
AS11311 42 9 33 78.6% autonomous system number assigned
AS10479 40 7 33 82.5% ITESM-Rectoria Zona Norte
AS1913 115 83 32 27.8% autonomous system number assigned
AS11859 45 13 32 71.1% autonomous system number assigned
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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