Sierra Video Ponderosa 3G Series Routing Switcher - Manual (Page 26)

SIERRA VIDEO
20
Redundant Processors
Introduction
The Ponderosa Family supports the use of redundant processors. A system with this option has
two different control processors. At any given time, one of the processors is the master and the
other is the standby processor. The master processor is the one that controls the system. The
standby processor simply monitors the activity of the master processor, keeping track of the same
routing switcher status information as the master, and takes over the job of master if it detects
that the master processor has failed.
To enable redundant processors, DIP switch S1-7 must be ON on both processors. If it is off, the
processor will ignore the presence of another processor and will start up as master processor and
control the entire system. It will not flash the LED that indicates that the other processor has a
problem.
The two processors always monitor each other and present status information on the processor
LEDs to indicate the processor health.