Reliability Systems: A Maintenance Aid
555-233-123
6-24 Issue 4 May 2002
However, if the defect in the Duplication Interface circuit pack did not sever
the Memory Shadowing Link, the SPE-interchange results in the new
Active SPE performing a Warm Start instead.
4. After the SPE-interchange is complete, log into the terminal. Follow the
‘‘Circuit Pack Replacement Procedure’’ for each circuit pack to be replaced
in the new Standby SPE.
Upgrading SPE Circuit Packs
Determine which SPE is the Standby SPE by issuing the status system
command. Look at the SPE and MODE fields in the upper left corner of the form.
The Active SPE; it is labeled as “active.” The other SPE is the Standby SPE and is
labeled as either “standby,” “maint,” or “down.”
Follow the ‘‘Circuit Pack Replacement Procedure’’ for each Standby SPE circuit
pack to be upgraded.
When all Standby SPE circuit packs have been upgraded, force the Active SPE to
become the Standby SPE as follows:
1. Issue the status system command from the terminal. Look at the SPE and
MODE fields in the upper left corner of the form to determine the status of
the Standby SPE. Recall that the Standby SPE is labeled as either
“standby,” “maint,” or “down.”
2. If the Standby SPE is labeled as “maint,” continue issuing the refresh
spe-standby command followed by the status system command until the
Standby SPE is labeled “standby.”
NOTE:
It may be necessary to issue the refresh spe-standby command
multiple times to preempt all Standby SPE maintenance activity. If the
refresh spe-standby command successfully completes five times
without the Standby SPE becoming labeled “standby” on the status
system form, wait 20 minutes. Issue the refresh spe-standby
command once more.
3. If the Standby SPE is labeled “standby,” issue the reset system
interchange command from the G3MT. After the SPE-interchange is
complete, log into the terminal, issue the status system command, and
verify that the SPEs have reversed roles.
4. Follow the “Circuit Pack Replacement Procedure” for each circuit pack to
be upgraded in the new Standby SPE.
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