Switch User Manual

D ESCRIPTION OF H ARDWARE
1-7
Optional Redundant Power Unit
SMC supports an optional Redundant Power Unit (RPU), that can supply
power to the switch in the event of failure of the internal power supply.
Power Supply Sockets
There are two power sockets on the rear panel of each switch. The
standard power socket is for the AC power cord. The socket labeled
“RPU” is for the optional Redundant Power Unit (RPU).
Figure 1-5 Power Supply Sockets
Stack
Link
Green Uplink and downlink operating normally.
Flashing Green Uplink has failed.
Flashing Amber Downlink has failed.
Off No stacking link present.
Module Green An expansion module is installed in the slot.
Flashing green An installed expansion module has been
disabled.
Off There is no module installed.
Stack ID 1-8 Indicates the switch stack ID.
The Master unit is numbered 1.
Slave units are numbered 2-8.
Off In standalone mode.
Table 1-2 System Status LEDs (Continued)
LED Condition Status
Power Socket
Redundant Power Socket