Macip; Aurp - Netopia Router PN Series Reference Manual

6-4 Reference Guide
A router has multiple communications ports and is capable of
forwarding information to other routers and devices on the internet.
The router performs packet forwarding, network and device address
maintenance, and other administrative functions required by the
AppleTalk protocols. The distinction between routers and bridges is
an important one:
A true bridge, like a router, is used to join two cable segments
and filter traffic between them. The result is still one expanded
network rather than an internet. Bridges do not assign network
numbers or zone names, nor do they maintain network maps.
A router maintains the separate identities of the networks it
connects; the result is an internet.

MacIP

When Macintosh computers encapsulate TCP/IP packets in
AppleTalk, either because they are on LocalTalk or because, for
administrative reasons, they must use the services of a MacIP
gateway. This gateway converts network traffic into the correct
format for AppleTalk or IP, depending on the traffic's destination.
Setting up MacIP involves enabling the feature and optionally setting
up a range of addresses to be static.
See Chapter 4, "IP Setup."
MacIP and other IP addressing schemes.

AURP

AppleTalk Update-Based Routing Protocol (AURP) allows AppleTalk
networks to communicate across an IP network. Your local AppleTalk
networks (connected to the Netopia Router) can exchange data with
remote AppleTalk networks that are also connected to an
AURP-capable router.
for more information on how to set up