DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-1494STBY-SPE (Standby SPE Maintenance)
9
Standby Availability
Various factors affect the availability of the standby SPE:
■ The condition of the individual hardware components of the standby SPE
■ Standby memory content
■ Standby State-of-Health (SOH)
■ Standby SPE-Down
■ System Time-of-Day
The health of both the active and standby is tracked as a State-of-Health (SOH)
value. State-of-Health is discussed fully in Chapter 1.
The SOH of the standby SPE can be determined with the "status spe" command.
A complete description of this command and its output appears in Chapter 8. For
the standby to be fully available, the fields (for the SPE with mode
standby
, where
applicable) should read as follows:
Any divergence from these conditions, except during system recovery or
technician-initiated maintenance, requires immediate investigation.
Locking the Active SPE
Duplication Interface hardware supports the ability to lock the active SPE into
active mode. On each Duplication Interface circuit pack is an SPE-SELECT
switch which can be set in three positions: A, B, Auto. These are normally set with
both switches on AUTO, allowing system software to govern which SPE is active.
When the SPE-SELECT switches on both SPE’s Duplication Interface circuit
packs are set to the position A, then the SPE in carrier A is locked active and the
B-carrier SPE is locked standby. Setting both to B locks the B carrier active. Any
other combination of settings results in AUTO mode.
In locked mode, the system
operates as if it is simplex:
Duplicated? yes
SPE Selected? auto (otherwise, the
SPE-Select switches will
prevent any interchange)
Standby Busied no
Standby Refreshed? yes
Standby Shadowing on
Standby Handshake? up
Recent Spontaneous
Interchange?
no
State-of-Health functional
