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From: mep@aqua.whoi.edu (Michael E. Pare)
Newsgroups: comp.protocols.tcp-ip
Subject: Re:  IP routers
Message-ID: <9002282113.AA06228@aqua.whoi.edu>
Date: 28 Feb 90 21:13:15 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 6

The key to all this is how much!!  The routers (item 3) are good but are
expensive.  If your traffic will be light and you only have the one network
this may be overkill.  A PC running router software may be a better cost
implementation.

You'll have to make the cost justification.  Bon chance!!