Precautions - Mitsubishi Electric GOT2000 Series User Manual

2.4.4

Precautions

■1. IP address setting
Set an IP address for each interface to access a different network.
■2. When the GOT connects to the network on which a device with the same IP address
resides
The GOT goes into an offline state, and displays the following dialog.
Example) For GT27
[Ethernet port1]: [Ethernet standard port] tab
[Ethernet port2]: [Ethernet extension port] tab
Change the IP address of the GOT or the device.
• When changing the IP address of the device
Specify a new IP address for the device, and touch the [Reboot GOT] button to restart the GOT.
• When changing the IP address of the GOT
Touch the [Clear IP Address] button to clear the GOT IP address.
Then, touch the [Reboot GOT] button to restart the GOT, and specify a new IP address for the GOT.
■3. Selection for [Behavior of duplicate IPs]
When [Do not maintain a network connection] is selected for [Behavior of duplicate IPs], if a device with the same IP
address as the GOT connects to the same network, the GOT becomes disconnected from the network.
Thus, incorrect setting of IP addresses or any malicious action may disable the relevant GOT to communicate,
affecting the system control.
Make sure to consider the necessity to change the selection for [Behavior of duplicate IPs] before doing so.
■4. Using a switching hub compatible with the Spanning Tree Protocol
For the switching hub port connected with the GOT, configure the setting (PortFast or others) that makes the GOT be
ready for communications (forwarding state). Thus, the Spanning Tree Protocol does not cause a delay upon
connection.
Without the setting, the Ethernet IP address duplication is detected incorrectly.
Additionally, the GOT may not connect to the Ethernet network correctly.
For the setting that makes the GOT be ready for communications (forwarding state), refer to the user's manual for the
switching hub used.
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2.4 IP Address