5412 and two j8713A Power Supplies

[KJohnsonCDA]

We were recently changing out UPS's for one of our 5412zl switches with dual 1500 watt power supplies. On unplugging one of the power supplies, the linecard in slot G shut down and would not come back up without pulling the card and reseating it.

All bays A-G are all filled with the 24 Port 10/100/1000 POE linecards (J8702A).

Bays H-L are empty.

POE power across the linecards is only showing 241 watts total across all the cards.

Is this normal for a single J8713A to only be able to power half the bays on a 5412?

We waited until after hours to move the other power supply to the new UPS. Unplugging it resulted in the same behavior. Slot G dropped and had to be re-inserted to bring it back up.

Thanks for any input.

Kirk.

[Ralf Krause · Accepted solution]

Hi Kirk,

yes, that's normal behavior.
The 12-slot 5400zl (as well as the 8212zl) requires two PS to run. To achieve power redundancy, you will need at least a third PS.

Running on one PS only shuts down the bottom half of available modules (as you experirienced).

Ralf

[KJohnsonCDA]

Answered in second post