10G network interface connections don't work anymore ...

Hi there,

my UnRAID install was running strong for about 1.5 years without a restart.

The machine is running a few dockers for local network use, an externally available Nextcloud-Docker and a big ZFS as a SMB share for a MacPro and my mobile MacBookPro.

It has a normal Gigabit onboard network interface which is under the 192.168.0.111 address and via this is connected to the internet with my router as a gateway.

Also I have configured a Dual 10Gigabit network interface which is running on 192.168.1.111 with a fixed IP and also connected to a different 10G switch and no gateway, so this is for internal network traffic only. The Macs also connect via their 10G ports to this switch.

Historically, I could connect to either the SMB shares and the GUI via both interfaces IP addresses.

Suddenly, the 10Gigabit one doesn't work anymore, so I can neither connect to SMB shares nor the Web GUI via the 192.168.1.111 address.

My main problem is: I'm remotely connected through my MacPro, so not on site, but I need to render a lot of stuff remotely and this is very slow with the Gigabit connection, only.

I can't ping the 10G network address from the MacPro, but I can't test if I can ping any other device on the 10G network, because the third device is with me on the road.

How can I check if the 10G interface is correctly connected to the network switch, or if the network switch is still responding? Is there any way to know?

Internally, the interface seems to respond to the normal commands, I can address it to ping outbound, but of course, nothing answers this way, either.

Thanks for any ideas,

Cheers,

M