Monitoring how often a port goes down
You can monitor the number of times a link is going up or down rapidly (that is, flapping) on a port. This action can be detrimental to network stability because it could trigger spanning tree and routing table recalculation. If the number exceeds a given boundary during a specified interval, the port is forced out of service.
To monitor a port:
- From the Device Manager menu bar, choose Edit > Diagnostics.
| The Diagnostics dialog box opens with the Test tab displayed. |
- Click the Link Flap tab.
To continue, go to:
