Configuring the IP Forwarding Service

Introduction

The 140NOC78100 head module uses an IP forwarding service to provide transparency between networks in a Quantum EIO system. Use Control Expert to configure the IP forwarding service, including configurable parameters for control network, fieldbus network, extended network, or default gateway.

Configure ports ETH 3 and ETH 4 (control network ports).

Configure port ETH 2 (interlink port).

Configure port ETH 1 (service/extend port).

Configure the default gateway, which is the IP address of the control network router. This router is not a Quantum EIO device; rather, it is a customer device that typically connects the control network to other networks higher up in the Ethernet infrastructure.

Displaying the IP Forwarding Service Parameters

To display the IP Forwarding page and access the parameters:

Step	Action
1	Click Services in the navigation tree in the left panel of the Device Editor. Result: The Services page opens.
2	In the Services page, set the IP Forwarding field to Enabled. Then click Apply. Result: IP Forwarding appears in the navigation tree.
3	Click IP Forwarding in the navigation tree.
4	Click Apply to save changes and leave the window open, or click OK to save changes and close the window.

NOTE: The control network and device network need to have unique IP addresses.

NOTE: To use the service port in Extended Network mode, disable the IP forwarding service feature first, then select the service port mode as Extended Network. Refer to Configuring the Service/Extend Port for more information.