OT:Optical Splitters

["Martin, Christian" <cmartin () gnilink net>]

Folks,

Sorry for the slightly off-topic post.  Is anyone familiar with optical
splitters that can run in a primary-backup mode in a passive way?  The
intent is to provide GigE redundancy between a host and a pair of switches.
It needs to be able to switch over on a loss-of-link condition, and
preferably switch back once the primary comes online.  Does such a thing
exist that runs without power?  If not, is there a manageable, rackmount
solution with telco-grade reliability?

TIA,
chris