Setting The Active Ioc Card At Power Up - Symmetricom TimeProvider 5000 User Manual

Next, use the command
state.
Note:
redundant IOC configuration, two transient events will be generated in
the event log:
IOCx NOT PRESENT
IOCx TRANSITIONED TO ACTIVE STATE.
There will be no alarms.
Example:
If IOC2 is in a Standby state, the command to change it to an Active state is 
tp5000> set ioc-state ioc2 active
Rubidium "One-Time" Switchover
Another type of planned switchover can occur in a mixed-performance IOC TP5000,
where one IOC card has a Rb oscillator and the other IOC has an OCXO.
Symmetricom assumes that the user prefers the higher-performance Rb IOC to be
active in such a case. If a lower-performance IOC is Active when an Rb IOC card
first becomes capable of normal operation (whether from power-up or reboot), the
TP5000 will perform a one-time switchover to make the IOC with a Rb oscillator
become the Active card.

Setting the Active IOC Card at Power Up

If an IOC card is installed in the IOC1 slot of the TP5000 chassis, the TP5000 will
start the state machine for the IOC1 card to determine its appropriate state. If two
IOC cards are installed in a TP5000 at power-up, the TP5000 will start the start the
state machine for IOC2 one minute after starting the state machine IOC1, as shown
in Figure D-4. IOC1 will normally complete the warm-up process before IOC2,
barring any health issues with IOC1, which means that IOC1 will initially be the
Active card.
After the IOC2 card has completed the warm-up process, the TP5000 will select the
IOC with the Rb oscillator as the Active IOC. If IOC1 has the Rb oscillator, there will
be no switchover. If IOC2 has the Rb oscillator, rather than OCXO, the TP5000 will
initiate a switchover to make IOC2 the Active card.
098-00028-003 Revision A – June, 2011
set ioc-state to switch over the Standby card to an Active
If an Active IOC is physically removed from a TP5000 that has a
Appendix D Redundant IOC Cards
Setting the Active IOC Card at Power Up
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