Ignite keeps disabling network connection

[Thao Pham_1]

Hi everyone,
We are trying to restore an imagine from the Ignite Server (version C.7.5.142), but before we can do anything (just starts the GUI)the network card keeps being disabled. We had to call the network person in to re-enable the card many times. Ignite GUI fails to respond at the same place, we hadn't even chosen an image yet. At the point of failure we had just entered the name of the host and an IP address. The ethernet port is on the core IO card of an RX7620, the switch ports are configured to autonegotiate. This happens on a few switch ports we've tried.
Any ideas why?