[84702] in North American Network Operators' Group
Re: [afnog] ARIN to allocate from 74/8 & 75/8
daemon@ATHENA.MIT.EDU (Randy Bush)
Tue Sep 20 23:04:10 2005
From: Randy Bush <randy@psg.com>
Date: Tue, 20 Sep 2005 17:01:10 -1000
To: "Steven M. Bellovin" <smb@cs.columbia.edu>
Cc: Todd Underwood <todd@renesys.com>, nanog@merit.edu
Errors-To: owner-nanog@merit.edu
>> this has probably already been thought-out, but outbound reachability
>> testing *from* the address block to a representative spread of
>> addressing makes much more sense and would be much more indicative of
>> forwarding (versus routing) problems, and would do so with some method
>> and statistical reliability. presumably that is coming and just
>> hasn't been discussed or carried out yet.
> It's a good idea, but of course that requires someone in the allocated
> block to have a list of addresses to ping, all over the net.
as i said privately to someone, a few problems
o the scale of destinations is far to large.
o how are you to know what is an important host inside of a
complex enterprise? the granularity of routing/filtering
within sites is not externally visible.
o many of a large complex enterprise's sources from which it may
be desirable to test may be in 1918 space.
o the pingees may not like being pinged.
the goal here was for isps and enterprises who want to be good
citizens to be able to test.
randy
