[780] in Commercialization & Privatization of the Internet

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Re: IETF questions -- Internet growth

daemon@ATHENA.MIT.EDU (Fred Baker)
Thu May 30 12:19:46 1991

Date: Thu, 30 May 91 09:10:09 PDT
From: fbaker@acc.com (Fred Baker)
To: smb@ulysses.att.com
Cc: art@acc.com, com-priv@uu.psi.com, dklein@pueblo.att.com, emv@ox.com,

Steve:

>> It appeared to us -- and I'd be happy to be corrected if I'm wrong --
>> that there's no way (today) to do multiple levels of subnetting.

Actually, there are several protocols that support it, RIP and OSPF
being standard ones.

I can't comment on hosts other than the ones I use; those have the
concepts of "the local subnet", and "the router", and for transparent
subnets require proxy ARP.  While implementation of the use of RFC
950's ICMP Address Mask Request/Reply on hosts, and a standard Router
Detection scheme (the One True Value of RIP...), would be useful to
obviate proxy ARP and the ICMP ReDirect, I don't see that the current
products and architecture leaves you unable to design networks with
layers of information hiding.

What do you need in addition?  What are we overlooking?

Fred

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