Cisco ONS 15310-MA SDH Procedure Manual page 414

Table 17-3
Variable
gfpStatsRxCIDInvalid
gfpStatsCSFRaised
ifInPayloadCRCErrors
ifOutPayloadCRCErrors
ifOutDiscards
gfpStatsRxFrame
gfpStatsTxOctets
Step 7 From the Alarm Type drop-down list, indicate whether the event will be triggered by the rising threshold,
falling threshold, or both the rising and falling thresholds.
Step 8 From the Sample Type drop-down list, choose Relative or Absolute. Relative restricts the threshold to
use the number of occurrences in the user-set sample period. Absolute sets the threshold to use the total
number of occurrences, regardless of time period.
Enter an appropriate number of seconds for the Sample Period.
Step 9
Enter the appropriate number of occurrences for the Rising Threshold.
Step 10
Note
Enter the appropriate number of occurrences in the Falling Threshold field. In most cases a falling
Step 11
threshold is set lower than the rising threshold.
Note
Click OK to complete the procedure.
Step 12
Step 13 Return to your originating procedure (NTP).
Cisco ONS 15310-MA SDH Procedure Guide, Release 9.1 and Release 9.2
17-8
POS Threshold Variables for GFP-F Mode (MIBs) (continued)
For a rising type of alarm, the measured value must move from below the falling threshold to
above the rising threshold. For example, if a network is running below a rising threshold of
1000 collisions every 15 seconds and a problem causes 1001 collisions in 15 seconds, the excess
occurrences trigger an alarm.
A falling threshold is the counterpart to a rising threshold. When the number of occurrences is
above the rising threshold and then drops below a falling threshold, it resets the rising threshold.
For example, when the network problem that caused 1001 collisions in 15 seconds subsides and
creates only 799 collisions in 15 seconds, occurrences fall below a falling threshold of
800 collisions. This resets the rising threshold so that if network collisions again spike over a
1000 per 15-second period, an event again triggers when the rising threshold is crossed. An event
is triggered only the first time a rising threshold is exceeded (otherwise, a single network
problem might cause a rising threshold to be exceeded multiple times and cause a flood of
events).
Definition
Receive frames with Invalid CID
Number of receive (Rx) client management frames with Client
Signal Fail indication
The number of receive data frames with payload CRC errors
The number of transmit data frames with payload CRC errors
Chapter 17 DLPs H100 to H199
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