So it appears that the issue is happening on multiple ports. Could you provide the following information:
1. It is the same ports affected each time?
2. Are the ports part of a Link Aggregation Group?
3. How frequent the issue is occurring?
4. The version of EXOS installed
More information on the fault detection process can be found in the following article:
https://gtacknowledge.extremenetworks.com/articles/Q_A/what-is-the-difference-between-local-fault-an...
Isolating the issue and ruling out any layer 1 issue is generally a first step in troubleshooting. If multiple ports are affected, please isolate the issue by moving one of the problematic links to another port to see whether the problem follows. Also check for any errors on the port using the command show port
rx errors and show port tx errors.