Nortel Networks OPTera Metro 3500 - Manual (Page 141)

Operation, administration, and maintenance (OAM) features 2-103
Planning and Ordering Guide—Part 1 of 2 NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004
Threshold values
There are three performance monitoring threshold values:
• hard-coded default threshold values (facility type)
• default threshold values defined by the user (facility type)
• threshold values defined by the user (facility type)
Hard-coded default threshold values (facility type)
Each facility type has a set of hard-code default performance monitoring
threshold values. You cannot edit these values. You can, however, define your
own performance monitoring threshold values.
User defined default threshold values (facility type)
Each facility type has a set of default values that the user can define. The initial
default values are derived from the hard-coded factory default threshold
values. However, you can change these default values at any time.
User defined threshold values (facility)
You can set a facility slot or port to
• specific threshold values
• the default threshold values defined for that facility type
The threshold values for each specific facility are initially derived from the
default threshold values for the matching facility types.
If you delete a facility with customized threshold values and add the facility
again, the threshold values specific to the facility revert to the default threshold
values. When you replace threshold values that you program, the programmed
values stay with the network element.
If you replace a circuit pack other than the shelf processor, the threshold values
are recovered from the shelf processor.
If you replace the shelf processor, the threshold values are recovered from
other circuit packs in the network element.