[c-nsp] Power Redundancy in 3550 or 3750?

[Michel Renfer]

> Do you mean they _do_ power cycle when switching back from 
> RPS, or _don't_ they?

The switch rebooted when switching back from rps power.

> And how many switches have you tested, and have Cisco confirmed 
> they should/shouldn't reload?

We tested it only with one 3560 internally. We didn't open a case
on this until now.

> "The AC power supply is FAULTY even after plugging
>   back in the AC power cable.  So when you push the
>   RPS button, the RPS would stop supplying the power
>   supply and the AC power supply would kick in but
>   it takes a short time for the AC power supply to
>   take over; but the little gap may reload the switch.
>   It is what the bug means.  The AC power supply need
>   redesign to kick in quicker."
> 
> "We suggest having the RPS and the switch be powered
>   from the same power supply."
> 
> "Both the AC and DC-to-DC converters are something
>   that we are buying from different vendors. All of
>   them are within the limits that we set."
> 
> So, we are not using any cisco RPS'es today.
> 
> Unfortunately, we don't have any other solution in place neither.
> But the internal AC power supplies are not dying either.

Interesting to hear your experience!

cheers,
michel