Figure 19: Topology Check - Optical Systems OSD2251P SERIES Operator's Manual

In the example below there are four OSD2251P connected in a ring configuration.
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 3 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 4 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.
PAGE 24
OPTICAL SYSTEMS DESIGN

FIGURE 19: TOPOLOGY CHECK

OSD2251P OPERATOR MANUAL
DOC ID: 10115303