On Fri, Mar 18, 2022 at 11:38 AM Galen Seitz <gal...@seitzassoc.com> wrote:
> Hi, > > For a project I'm working on we have a need for a switch with PoE+ that > will power the ports quickly, say less than 15 seconds after power up. > The switch that is currently specified is a Cisco cbs250-16P-2g. This > switch takes at least a minute, if not more, to enable power to the > ports. With a bit of searching I discovered that some Cisco switches > have a pair of features called Perpetual PoE and Fast Boot PoE. We > don't have a need for Perpetual PoE, but Fast Boot PoE seems to fit our > needs. Some other vendors have a similar sounding feature. So far I > have only seen this offered on higher end switches(Cisco, Juniper, > etc.). Does anyone know of any switches that are more in the SOHO class > that have this type of feature? > > Note that we need some management features available via telnet, so this > precludes using an unmanaged switch. > > thanks, > galen > -- > Galen Seitz > gal...@seitzassoc.com > >From your request, I am suspecting you have some devices powered by PoE that you need active on the network as soon as possible, like maybe a radio or something. How about using whatever favorite switch works for you otherwise, and putting a PoE injector in the line going to your devices needing immediate power? They would then actually be powered all the time, regardless of the switch status. You may need to turn PoE off on the switch ports you have an external injector on. Sure, it adds a little hardware complexity, but I think it will provide the functionality you are looking for. Michael
