How do I examine a link in the Troubleshooting Summary dashboard?
Link troubleshooting
The link Troubleshooting Summary dashboard consists of a selection of dashlets intended to show an overall picture of a link, providing the necessary information to troubleshoot it. On alarm dashlets, you can click on an alarm KPI to open the related alarms in a list view. Cross-launch to an alternate view via links or alarm circles is not possible if the related object is not part of a resource group.
The Link Summary dashboard provides information in a series of dashlets:
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Link Endpoints Overview - port and address information for the selected link
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Current Health Summary - overall operational status of the selected link
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Alarm Summary - Endpoints - alarm counts for the selected link endpoints
If you need to refer back to an object you had previously opened in the Object Troubleshooting dashboard, click 
Target History and select an object from the drop-down list.
Troubleshooting workflow
Use the following dashboard features to troubleshoot a link:
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View all alarms for a link KPI in the Alarms list; see How do I check alarms for a KPI?.
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View all alarms for the link; in the Alarm Summary dashlet, click View In Current Alarms.
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Open the link in IP Optical Coordination; see How do I open a link in IP Optical Coordination?
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Plot utilization or error statistics for the link; see How do I plot performance statistics for an object?