Folks:

Thanks for the spirited discussion of how you use various kinds of subnets. It's
helpful to hear all this so that InterMapper can "do the right thing" for our
customers. 

In pursuit of this goal, I'd like to expand the discussion so that we can
understand all the possibilities. 

1)      /31 subnets. It seems as if there are proponents of both sides: people 
who
never intend to deploy a /31 subnet, (and want a facility to warn them if
they've done so); and people who regularly use them on point-to-point links as
described in RFC 3021. 

2)      What about /32 subnets? Is anyone using them?  (see the links below that
discuss how they're used...)

3)      Are there other unusual subnets/related network configurations that we 
should
take into account?

My question to the group:

What should/could *InterMapper* do when presented with equipment that uses any
of these configurations? I've googled around and come up with a few citations on
the subject. See the links at the bottom of this message. 

Many thanks!

Rich Brown                    [EMAIL PROTECTED]
Dartware, LLC                 http://www.dartware.com
10 Buck Road, PO Box 130      Telephone: 603-643-9600
Hanover, NH 03755-0130 USA    Fax: 603-643-2289

--------- Sources of info -----------

/31 subnets:

RFC 3021 (31-bit prefixes): http://www.faqs.org/rfcs/rfc3021.html

Cisco's "Using 31-bit prefixes..." note:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122newft/122t/12
2t2/ft31addr.htm

/32 subnets: 

Subnet Zero and All-ones Subnet: http://www.cisco.com/warp/public/105/40.html

Stanford's Experience:
http://rescomp.stanford.edu/staff/manual/studevelop/projects/iprequest/network_c
onfiguration.html
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