In the example below there are four OSD2254EP connected in a ring configuration.
FIGURE 22: TOPOLOGY CHECK
No: 4 – Four units connected
MAC_ADDRESS:– Displaying all the MAC addresses of the units connected on the ring/bus
TOPOLOGY: Ring – Displaying type of connection.
NODE_ROLE: MASTER – Displays if the unit is either the Master or Slave on the ring/bus.
Master is determined by the lowest MAC address
PORT3: U_port. Indicates the function of port 5 and its relation to the ring/bus. There are four
possibilities;
1. M_port – Master Port
2. S_port – Slave Port
3. B_Port – Backup Port
4. U_Port – Unconnected Port
PORT4: U_port. Indicates the function of port 6 and its relation to the ring/bus. There are four
possibilities;
1. M_port – Master Port
2. S_port – Slave Port
3. B_Port – Backup Port
4. U_Port – Unconnected Port
<-local: This points to the unit that the USB cable is plugged into on the ring/bus.
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