Network Transparency via IP Forwarding Using Multiple BMENOP0300 Modules
Original instructions
IP Forwarding Example
You can enable IP forwarding in an M580 system with multiple BMENOP0300 modules.
Set a Static Route
The PC (host A) resides in network 1, and can communicate with each of the BMENOP0300 modules in the local rack via the module’s network 1 IP address. For the PC to communicate with devices in networks 2, 3, and 4, set the IP address of each respective BMENOP0300 module in each respective network (2, 3, and 4) as the route for traffic.
On each of networks 2, 3, and 4, each IED configures the direct connection to each BMENOP0300 module’s IP address as its gateway.
Network
NOP IP Address (ETH2/3)
IED IP Address
IED Gateway IP Address
2
192.168.2.1/24
192.168.2.2/24 – 192.168.2.254/24
192.168.2.1
3
192.168.3.1/24
192.168.3.2/24 – 192.168.2.254/24
192.168.3.1
4
192.168.4.1/24
192.168.4.2/24 – 192.168.2.254/24
192.168.4.1
1 
A BME•58•••• CPU connects the local rack to the main ring.
2 
A BMENOP0300 module is connected to: A) the control network (network 1) via port ETH1 and 6) network 2 via port ETH3.
3 
A BMENOP0300 module is connected to: A) the control network (network 1) via port ETH1 and 7) network 3 via port ETH3.
4 
A BMENOP0300 module is connected to: A) the control network (network 1) via port ETH1 and 8) network 4 via port ETH3.
5 
On network 1 (control network), with the network address of 192.168.1.0, a PC uses the IP address 192.168.1.0/24.
6 
network 2 with the address 192.168.2.0/24
7 
network 3 with the address 192.168.3.0/24
8 
network 4 with the address 192.168.4.0/24