I have a catalyst 2960 and its connected to a redundant power supply. I rebooted the catalyst and the switch is now running primarily off the rps instead of the house current. Is there a configurable command to change that to house current or do I have to reboot again and plug switch power and rps power in some sort of sequence.
I'm not aware of any way to prioritize power supplies with the 2960 model. I suggest leaving it plugged in to house current, unplug it from the rps, reboot the switch and then plug it back into the rps.
The 2960s do not have the "Automatic backoff" feature available in 3750E and 3560E devices therefore they won't go back to internal power by themselves. On those same "E" switches you can change the RPS port from active to standby via CLI but again is not going to help you since 2960s are not capable of same function.
Rich has described already how to get back to internal power supply, I'm afraid there is no other way around and you will have to schedule a downtime.
We are pleased to announce availability of Beta software for 16.6.3.
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