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DEFINITY ECS Release 8.2 Maintenance for R8.2csi
555-233-119 Issue 1
April 2000
Maintenance Objects
3-201ATM PNC-DUP (ATM PNC Duplication)
3
PNC state of health
PNC-DUP software monitors the health of the two PNCs as determined by their
state of health (SOH) vectors, and initiates an interchange when the health of the
active falls below that of the standby (unless prevented from doing so by a PNC
lock, busyout, or antithrashing mechanism). Potentially service-disrupting faults
that occur in PNC components are reported to PNC-DUP and incorporated in the
state of health for the affected PNC. The SOHs of both PNCs are displayed on the
status pnc
screen, as shown in Figure 3-9
.
Figure 3-9. Status PNC screen with standby PNC fully In-Service
PNC state of health indexes
The Inter-PN Index form the state of health vector is used to track and compare
the states of health of both PNCs. The fields making up the indexes are two-digit
numbers separated by periods (.), with each field representing a different class
of faults. The fault class fields are arranged in order of decreasing importance
from left to right. In other words, each field in the index supersedes the following
fields in determining which PNC is healthiest. A fault class drives an interchange
only when all of the higher priority fault classes are equal. A zero entry indicates
no faults present for that class. Increasing numbers indicate increasingly higher
numbers of faults present in that class.
status pnc page 1 of 1
PORT NETWORK CONNECTIVITY
Duplicated? yes
Software Locked? no
Standby Busied? no
Standby Refreshed? yes
Interchange Disabled? no
A-PNC B-PNC
Mode: active Mode: standby
State of Health: functional State of Health: functional
Inter PN Index: 00.00.00 Inter PN Index: 00.00.00
Major Alarms: 0 Major Alarms: 0
Minor Alarms: 0 Minor Alarms: 0
Warning Alarms: 0 Warning Alarms: 0