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イーサネット・スイッチ

Why can my camera only operate at 10Mbps in half duplex mode after extended mode in 250m PoE switch is enabled?
There is voltage reduction due to line impedance in 250 meter cable for PoE. What should I do?
What does the "Link Up" or "Link Down" SNMP Trap monitor? How do I initiate it?
How does the power fault alarm relay operate?
How to make a root switch of STP/RSTP network manually?
Does the SMTP Server field support any other address format other than IPv4 addressing as shown in Figure-1? What kind of events will be generated and sent out through the email notifications?
How to stop a client receiving the IPv4 multicasts generated by a server based on the following network scenario?
What causes the Alpha-Ring to generate a topology change notification?

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