The Cidr Report
Tony Bates
tbates at cisco.com
Sat Jun 9 06:00:06 UTC 2001
This is an auto-generated mail on Fri Jun 8 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A summary of the last weeks changes in terms of withdrawn and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.
------------------------------------------------------------------------------
CIDR REPORT for 08Jun01
0) General Status
Table History
-------------
Date Prefixes
010601 102687
020601 102235
030601 102123
040601 102282
050601 102182
060601 102174
070601 102400
080601 102522
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: 10948
Number of ASes announcing only one prefix: 6480 (3676 cidr, 2804 classful)
Largest number of cidr routes: 1185 announced by AS705
Largest number of classful routes: 1427 announced by AS701
1) Gains by aggregating at the origin AS level
--- 08Jun01 ---
ASnum NetsNow NetsCIDR NetGain % Gain Description
AS1221 1390 1031 359 25.8% TELSTRA-AS
AS1 599 540 59 9.8% GTE Internetworking
AS1239 458 401 57 12.4% SprintLink Backbone
AS13544 69 19 50 72.5% autonomous system number assigned
AS11774 73 27 46 63.0% AS 11774 Object
AS1267 68 26 42 61.8% Infostrada S.p.A.
AS1237 96 54 42 43.8% KISTI
AS12235 48 7 41 85.4% Cove Software Systems Inc
AS12302 67 28 39 58.2% MobiFon S.A.
AS10620 54 17 37 68.5% autonomous system number assigned
AS13345 66 33 33 50.0% autonomous system number assigned
AS11311 42 9 33 78.6% autonomous system number assigned
AS12064 34 2 32 94.1% autonomous system number assigned
AS11859 45 13 32 71.1% autonomous system number assigned
AS12497 32 1 31 96.9% SA*Net Network - AS
AS12067 32 1 31 96.9% autonomous system number assigned
AS12062 34 3 31 91.2% autonomous system number assigned
AS11606 43 12 31 72.1% autonomous system number assigned
AS11418 45 16 29 64.4% autonomous system number assigned
AS11371 75 47 28 37.3% Rhythms
AS10733 35 7 28 80.0% Matrix Internet
AS11507 80 53 27 33.8% TouchAmerica Montana
AS10722 58 31 27 46.6% Aluminum Co. of America
AS12709 32 6 26 81.2% Melita Cable Autonomous System
AS12564 31 5 26 83.9% Bulgarian Government Autonomous S
AS11781 31 5 26 83.9% autonomous system number assigned
AS11686 119 93 26 21.8% Education Networks of America
AS11367 31 5 26 83.9% autonomous system number assigned
AS11170 28 3 25 89.3% autonomous system number assigned
AS11139 70 45 25 35.7% Regional IP Network
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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