User`s guide

8-4
Fast Ethernet Network Interface Cards
Dual Hubs with a Four-Port Quartet NIC
This example shows port redundancy, using Duralink Failover,
within a single four-port Quartet NIC. As shown in the illustration
below, ports 1 and 3 are used as the primary ports to each Ethernet
hub. Ports 2 and 4 are secondary ports connected to each hub.
Primary
Secondary
Ethernet Hub
Clients
Clients
Ethernet Hub
Server
Port1
Port2
Port3
Port4