[4763] in North American Network Operators' Group
Cidr Report in parts - part 1
daemon@ATHENA.MIT.EDU (Tony Bates)
Fri Sep 27 21:47:51 1996
To: nanog@merit.edu
From: Tony Bates <tbates@cisco.com>
Date: Fri, 27 Sep 1996 18:43:42 -0700
Due to what I'm guessing is a problem with the merit mailer it seems
to eat my mail message containing the full report so I going to break
it up in part to see how that works.
--Tony
This is an auto-generated mail on Fri Sep 27 12:01:14 PDT 1996
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A summary of the last weeks changes in terms of withdrawn and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.
In the future I hope to put some (or most) of this report up on the
web.
------------------------------------------------------------------------------
CIDR REPORT for 27Sep96
0) General Status
Table History
-------------
Date Prefixes
210996 43100
220996 42436
230996 42636
240996 42498
250996 41621
260996 42422
270996 42323
Possible Bogus Routes
---------------------
*** Bogus 211.199.11.0 from AS6176
AS Summary
----------
Number of ASes in routing system: 1630
Number of ASes announcing only one prefix: 644 (330 cidr, 314 classful)
Largest number of cidr routes: 493 announced by AS3561
Largest number of classful routes: 1268 announced by AS174
