DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Commands
8-292status pnc
8
State of
Health
On a system with duplicated PNC, the state of health of each PNC. For
the standby PNC, service effects mentioned below are those that would
occur if that PNC were to become active via an interchange.
Functional: the indicated PNC has no service disrupting alarms against
it. The state of health vector is all zeros, and call setup on the standby
PNC matches that of the active.
Partially functional: the health of the PNC is less than perfect. The
source and severity of the problem is indicated by the state of health
vector (Inter-PN and Inter-SN Indexes). Whenever the standby’s state of
health is partially functional, duplicated call setup on the standby
probably does not match that on the active.
Not functional: Expansion Archangel Links to all EPNs are down on this
PNC. No service is possible to any EPNs via this PNC.
Inter PN
Index,
Inter SN
Index
The Inter-PN and Inter-SN Indexes form the state of health vector,
which 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. The Inter-PN
Index contains five fields (XX.XX.XX.XX.XX), and the Inter-SN Index has
two (XX.XX). The Inter-PN Index reports faults in connectivity between
port networks and supersedes the Inter-SN Index, which reports faults
in connectivity between switch nodes. (The Inter-SN Index is only
meaningful for systems with a center stage switch having 2 switch
nodes, each of which is duplicated).
The meaning of each fault class field is given in Table 8-14
below. A
zero entry indicates that there are no such faults reported. Higher
numbers indicate increasing number of faults. All zeros indicates
perfect state of health. Unless the PNCs are locked, the active PNC’s
state of health should always be equal to or better than the standby’s.
(Otherwise, the system would perform a spontaneous interchange.)
After a PNC-related alarm is cleared, the system performs a partial
refresh of the standby PNC. The corresponding fault class field is not
updated to reflect the improved state of health until the refresh is done.
The state of health indexes will not agree with the current alarm status
during this period.
