Specifications

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Cisco ONS 15454 Installation and Operations Guide, R3.2
March 2002
Chapter 8 Performance Monitoring
Changing Thresholds
• All interfaces on port x: Clearing all interfaces on port x erases from the card and the screen display
all PM counts associated with all combinations of the radio buttons on the selected port. This means
the 15-minute near-end and far-end counts are cleared, and 24-hour near-end and far-end counts are
cleared from the card and the screen display.
• All interfaces on card: Clearing all interfaces on the card erases from the card and the screen
display all PM counts for data and ports on all interfaces.
Step 5 From the Zero Data menu, click Yes to clear the selected statistics.
Note The Ethernet cards are the only cards without the Clear button option.
8.2 Changing Thresholds
Thresholds are used to set error levels for PMs. During the accumulation cycle, if the current value of a
performance monitoring parameter reaches or exceeds its corresponding threshold value, a threshold
crossing alert (TCA) is generated by the node and sent to CTC. TCAs provide early detection of
performance degradation. When a threshold is crossed, the node continues to count the errors during a
given accumulation period.
You can program PM threshold ranges from the Provisioning > Threshold tabs on the card view. To
provision card thresholds, such as line, path, and SONET thresholds, see Chapter 7, “Card
Provisioning.” Figure 8-7 shows the Provisioning > Threshold tabs for an OC-48 card.
Figure 8-7 Threshold tab for setting threshold values
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Threshold tab Provisioning tab Card view