DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Maintenance Commands
8-189reset system interchange
8
■If Packet Interface link migration fails
■If a minor or major alarm is logged against the standby SPE’s SYSAM or
Packet Interface circuit p acks
■If the stand by SPE is busie d out
The destructiveness of an interchang e that fails depends on how far the
interchange proceed s before it fails. A non-destruct ive recovery should occ ur if
an interchange is aborted before link migration has started . If the interchange
fails after link migration has started , the system will perform a WARM restart to
recover.
The SPE-Sel ect s witch es loc ated on the Dupli cati on Inte rfac e circ uit p acks
overr ide an y dem and ma intena nce a ctivi ties. If the SPEs are loc ked b y mea ns of
these hardware switches, an interchang e cannot take place unt il the switches are
unlocked.
If a planned interchange aborts or fails, an error will be logg ed against SYSTEM,
signaling that the expec ted interchange has not oc curred. In this case, the reset
may be escalated b y software. This condition is describ ed in Failure of Planned
Interchange in Chapter 5, ‘‘Alarms, Errors, and Troubleshooting’’.
If reset system interchange override is specified while a PNC interchange is
occurring, a sp ontaneous (hard) SPE interchange will occur which results in a
Cold restart. After the restart, the active PNC will b e the one that was being
switched into before the restart.
If a requested SPE interchange fails, an error conveying additional information
about the failure will be logg ed against the SYSTEM maintenance object.