To connect power to the switch, refer to the Connecting to Power section in the Cisco IE 2000 Switch Hardware Installation Guide, available at https://www.cisco.com/c/en/us/td/docs/switches/lan/cisco_ie2000/hardware/installation/guide/ie2000_hig.pdf. The IE 2000 supports dual power supplies. Using the power supply specified in the Ring Manager IP Network System Catalog Page (LIT-1901096) , a single power supply is sufficient for normal operation. If a second power supply was previously configured, or if Cisco's Industrial Network Director (IND) is used to deploy the switch configuration, you can disable the status readback for the second supply. For more information, see Table 1. If the status LED is red, the second supply is not present. If the other power status LED is green, the switch is able to run normally.
When startup is complete, and the switch is operating normally, the system (SYS) and power (PSU) LED indicators are steady green. If the network is alive, the LED indicators for each Ethernet port appear steady green, or blinking green if there is an active device connected to the port.
When you configure two ports for MRP, you have the opportunity to note connection errors on the ring. If one LED indicator on one of the ports is steady green and the LED on the other port is blinking green, then the ring is closed and working correctly. If both LED indicators are blinking green, the ring is open and at least one device or cable is faulty.