Symmetricom TimeProvider 5000 User Manual

488 TimeProvider 5000 User’s Guide 098-00028-000 Revision F – May, 2012
Appendix D Redundant IOC Cards
Setting the Active IOC Card at Power Up
Figure D-4. IOC Condition at Power Up
IOC States
The possible states for an IOC card are Active, Standby, Active Warmup, Standby
Warmup, Fail, Non-existent, and Disabled.
The TP5000’s IOC state machine uses proprietary algorithms to determine the
proper state for an IOC card. Table D-1 describes aspects of the state machine,
such as possible IOC states, the next possible state, and the conditions required for
the next state transition.
Table D-1. IOC States and Related Conditions
IOC
STATE
Description Possible
Next
State
Conditions Required For
Next State Transition
Allowed State
of Other IOC
Initial
(Not an
actual
state)
The IOC has powered
up or rebooted and is
ready to decide its
first state.
Active
Warmup
The IOC State of other IOC
card is:
 Standby Warmup
 Standby
 Fail
 Non-existent
-------------
Standby
Warmup
The IOC State of other IOC
card is:
 Active Warmup
 Active

Symmetricom TimeProvider 5000 Specifications

General

Brand	Symmetricom
Model	TimeProvider 5000
Category	Server
Language	English