3Com 32x Network Router User Manual


 
1-10 CHAPTER 1: INSTALLING THE HARDWARE
Attaching a
Redundant Power
System
You can attach your SuperStack II bridge/router to a SuperStack II
Redundant Power System (RPS). You will need to order the connecting
cable (part number 3C8101) from 3Com. The following figure shows
where to attach this cable.
For full power supply redundancy, attach one end of the RPS cable to
the rear panel on the bridge/router and the other end to the RPS. Then
attach one end of the power cord to the rear panel on the
bridge/router and the other end to a power outlet.
In this configuration, the internal supply provides power. If the internal
supply fails or is switched off, or if there is a power failure, the RPS is
activated and the bridge/router reboots.
To reset a bridge/router in this configuration, turn the power off, wait 5
seconds and turn it back on. The bridge/router switches to the RPS,
then switches back to the internal supply to reboot.
CAUTION: For system susceptibility protection, always leave the AC
cord attached to the bridge/router hardware and to a power outlet.
Internal power supply failure is rare. If it occurs, the power switch on
your bridge/router will not operate. To reboot you will need to unplug
the RPS cable and then plug it back in. Replace your bridge/router with
another bridge/router that has a functioning internal power supply as
soon as possible. Contact your 3Com representative to replace your
bridge/router.
Rear panel of unit
Attach RPS cable here
SS2TRHWBook Page 10 Monday, May 5, 1997 3:11 PM