Manual 26166V1 MicroNet Simplex & MicroNet Plus
Woodward 53
Chapter 6.
CPUs
6.1-Network Topologies
The information that follows pertains to both CPU P1020 and CPU5200.
6.1.1-Network Topology:
As a rule, the MicroNet CPU should not be directly connected to a workstation with a Teamed network setup. A
Teamed network, directly connected to MicroNet CPU appears to enhance communication instability with some
common industrial protolcols. The following discusses a simple Teamed NIC setup and offers an alternative topology.
Figure 6-1. Simple Teamed NIC Setup
The teamed workstation has a single IP address. NIC A and NIC B are the teamed adaptors sharing a
single IP address. Each NIC has a unique MAC address. There is a connection between the two networks
that allows the teaming software to know that the NIC connections are alive and handle the routing.
6.1.2-Suggested Topology:
Remove the network team from the computer. A backup IP address could be a assigned to the second
NIC and configured through the server interfaces (MBE server for Modbus TCP). Removing the team will
remove the two MAC addresses associated with a single IP address and force an assigning of an IP
address per NIC.
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