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

[Hakan Lindholm]

Aaah, thanks for freshing my mind up.  We do use something like APC 
AP7722 "Automatic Transfer Switch".

Dual input, single output.  But they may also make the connected equipment 
reload, if they are too slow.  I think the default behaviour was too slow 
for us, or gave some spikes or something.  After tuning them, they are 
working as expected :)

/H


On Sat, 30 Jul 2005, Wojtek Zlobicki wrote:

> One other power redundancy solution is a FAS [Fast Acting Switch].
> While still susceptible to the 3550's power supply failing, you do get
> power redundancy.  You plug the FAS into two diverse power feeds, and
> if one dies
>
> On 7/30/05, Mark Boolootian <booloo at ucsc.edu> wrote:
>>
>>> In my lab of 2950's and RPS300's, the first switch didn't reload, the
>>> second one did.  And the next three switches also did reload.  Cisco TAC
>>> confirmed that they might reload.
>>
>> We use 3550s all over campus.  Our experience has been that they always
>> reload when switching from RPS power to internal power.
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