User`s guide

Prestige 128+ ISDN Router
6-2 IPX Configuration
6.1.2 Frame Types
IPX can run on top of four different frame types on the Ethernet. These frame
types are 802.2, 802.3, Ethernet II (DIX), and SNAP (Sub-Network Access
Protocol). Each frame type is a separate logical network, even though they exist
on one physical cable ( see the following diagram).
Although there are four frame types available on the Ethernet, you should
configure as few frame types as possible on your NetWare server and use
automatic frame detection on the clients to simplify management and to reduce
network overhead.
Figure 6-1 NetWare Server
6.1.3 External Network Number
Each of the four logical networks (based on frame type) has its own external
network number.