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

[Skeeve Stevens]

I agree... A pain, but still it seems to be the ONLY option available for
those switch models.... It would be nice if they had a network card and like
a Masterswitch could log into it and turn it back to mains.


_______________________________________________________
Skeeve Stevens, RHCE     Email: skeeve at skeeve.org
Si vis pacem, para bellum


-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Adam Griffiths
Sent: Friday, 29 July 2005 6:04 PM
To: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] Power Redundancy in 3550 or 3750?

<rant>
 
I'd like to add that that the RPS675 "solution" requires somebody onsite to
actually press the button on the front of the RPS to swap from RPS to
internal supply.
 
This is not an ideal solution if you are using these switches in remote
locations, for instance in the basement of a building, or in a mobile hut a
100km out of a capital city.

</rant>


> On 7/29/05, Andrew Fort <afort at choqolat.org> wrote:
> > Jan Friedel wrote:
> > >   Check the RPS675 solution.
> >
> > <friday afternoon rant>
> > 'Solution' is a strong word for the RPS675. :-)
> >
> > Unfortunately, it's a bit of a joke.  You waste an additional 1RU 
> > per device you want redundant power for -- why?  Because the RPS is 
> > designed to protect against power supply unit failure, not power 
> > supply failure; i.e., if you plug in more than one device to the 
> > RPS, and lose mains power, only one of the devices attached to the 
> > (usually 5 or 6) power sockets will receive power.
> >
> > So, although it's the only solution to Skeeve's problem, it's a 
> > space eater when you really just want another power supply that you 
> > attach to UPS as opposed to raw power.
> >
> > Also, when you switch from RPS back to mains, the switch will power 
> > cycle; so power outages still require an outage, just that you get 
> > to choose when it'll be.  Rumor is that this is a design flaw.
> >
> > </friday afternoon rant>
> >
> > -andrew
> >
> > _______________________________________________
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> >
>

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