My SA2500 drops off the network every 6-8hrs. When it happens I can not even ping the device although all the lights are on including NIC lights. I power cycle the device and everything works perfectly for another 6-8hrs.
The box was working fine for about 8 months and just started without any change I could think of.
I have tried upgrading the firmware, changed the switch ports and cables and played around with the duplex settings of the NIC.
I am only using the internal port of the device due to a simple small network.
I turned on logging but then found they were encripted so don't know what is happening once the device drops.