Extreme Networks

I need tips on how to approach such a configuration as in the diagram. (vans affected by the problem marked in red) Switch Extreme X690, port 5 comes QinQ communication from the third operator, collectively from many locations. In each such transmi...

X690-48x-2q-4c ExtremeXOS version 22.6.1.4 Exactly every 15 minutes timeout appears on the mgmt (ethernet) port. No ping response, hangs up the connection. The switch to which the mgmt port is connected does not report breaks or problems with packets...