When configured for port mirroring, the BMENOC0301/11 module can monitor the functionality of network links depending on which links are connected to the network.
Enable Service Port configuration:
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Step
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Action
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1
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Enable the Service Port on the Services page. |
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2
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Select Service Port in the navigation tree.
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3
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In the Service Port Mode pull-down menu, select Access Port (default) or Port Mirroring mode. (These modes are discussed in detail below.)
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4
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Press a button to finish:
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In Access Port mode, the ETH 1 port is always set to Enabled and cannot be edited. Connect these types of devices to port ETH 1 in this mode:
You can communicate with the CPU/ or the BMENOC0301/11 module itself. You can also access other devices that are connected to the network.
Select the Port Mirroring mode to configure the port to monitor and capture traffic to support a network analyzer (like Wireshark). In this mode, the SERVICE port is a read-only port. That is, you cannot communicate with Ethernet devices through the SERVICE port.
On the Port Mirroring page, use the Source Port property to enable specific ports:
The SERVICE port monitors traffic to the enabled ports:
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Source Port
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Description
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Internal Port
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Monitor Ethernet traffic to and from the module via the SERVICE port.
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ETH 2
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Ethernet traffic to and from port ETH 2 is sent to the SERVICE Port.
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ETH 3
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Ethernet traffic to and from port ETH 3 is sent to the SERVICE Port.
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Backplane Port
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Ethernet traffic to and from the backplane port is sent to the SERVICE Port.
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NOTE: If a device that is connected to the SERVICE port is configured for a speed that exceeds 100 Mbps, the Ethernet link may not be established between the device and the module through the SERVICE port.
Hot Standby Configuration
In an M580 Hot Standby configuration, some topologies may unintentionally create a loop that interferes with network communication. These topologies are essentially related to the management of flat networks, i.e., topologies in which the control network, remote I/O network, and/or the device network belong to the same subnet.
To help avoid creating an unintentional loop caused by connection to the service port, select the Automatic blocking of service port on Standby NOC check box that appears in the ServicePort tab of the configuration dialog. This check box is available only in Control Expert 14.0 or later.
No loop condition can exist on the Ethernet backplane connection by connecting one or more BMENOC0301.4 (or later) modules to the Ethernet backplane of an M580 Hot Standby configuration. A BMENOC0301.4 (or later) module automatically blocks its backplane port on the standby local rack.
To configure, select Services → Service Port in the BMENOC0301 Communication DTM.
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Select the Automatic blocking of service port on Standby NOC check box so that the service port of the standby BMENOC0301.4 module is automatically blocked.
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Deselect the check box so that the service port is not automatically blocked.
The check box is deselected by default.
NOTE: These features are implemented in a Hot Standby system using a CPU with firmware version 2.7 or later and a BMENOC0301.4 or later module.
Configure the SERVICE port online with Control Expert using
CIP explicit messaging, but this configuration may be lost when the BMENOC0301/11 Ethernet communications module is reset.
Configure the SERVICE port online with Control Expert using CIP explicit messaging. Refer to the description of the
service port control object The CIP object configuration is stored in RAM. When the BMENOC0301/11 Ethernet communications module is reset it reverts to the SERVICE port configuration in the DTM (above)
