Avaya 03-300430 User Manual

The Inter-PN Index screen 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 2-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.
The Inter-PN Index contains four fields (XX.XX.XX.XX).  The Inter-PN Index reports faults in 
connectivity between PNs.

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The meaning of each fault class field is given in 

on page 591.

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A zero entry indicates that there are no faults reported.

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Higher numbers indicate increasing number of faults.

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All zeros indicate a perfect state of health.

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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 performs 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 do not agree with the current alarm status during 
this period.

FC_EAL

1

Number of PNs with EALs down

EXP-PN

FC_PACL

2

Number of PNs with LINL, RINL, or EI-SNI neighbor link 

faults

EXP-PN 

FC_BFD

3

Number of PNs with BFDL (Bearer Fault Detection Link) 

faults

SYS-LINK

FC_HW

4

Number of PNs affected by hardware faults in a link having 

an EI as an endpoint.  Use list atm pnc to see endpoint 

designations.

ATM-EI