Redundant links best way?

[Sone]

Not done networking for a loooong time.

I have a small building about 50m away which has 2 cat5s coming across. Currently has 2 unmanaged switches and redundcy plan is basically for someone to swap out cables.

Other end has 1 unmanaged switch and a router.

If i wanted to do STP or similar do i need to swap out all 3 switches or could i get away with just the 2 in the remote building. Or am i looking at this wrong, is there a better way of doing this than STP?

Thanks in advance

 

[Sone]

thanks Skidilliplop.

It just a link for remote telemetry over satellite so don't need layer 3 (router is customers kit anyway) or any link aggregation just fail over.

 

[Sone]

its an industrial environment.

Its a second instrument kiosk they had to install. Need to do a site visit told its cat5e but normally would use armoured TP and a westermo DSL converter. Din rail 24v managed atex switchs are expensive so normally unmanaged are used. Also they have to be easily swapped by random C&I 'engineers' so simple is usually best.