Proxmox does not see the network

[Bush_Kape]

Good day, there is not a large data center of two nodes (dell r440 and dell r740). After not much downtime, proxmox on the dell r440 stopped seeing the network, idrac works stably. Ports changed, cords changed. Everything is fine with r740. Proxmox version is 5.4.144-1-pve. Thanks in advance!

auto lo
iface lo inet loopback

iface ens2f1 inet manual

auto vmbr0
iface vmbr0 inet static
        address ***.**.10.22
        netmask 255.255.255.0
        gateway ***.**.10.1
        bridge_ports ens2f1
        bridge_stp off
        bridge_fd 0

iface eno1 inet manual

iface eno2 inet manual

iface ens2f0 inet manual

 

[VictorSTS]

ip link clearly shows that there is "NO-CARRIER", which means there is no physical network link. Triple check the nic, cabling and switch confguration.

Maybe the nic or the port ens2f1 is faulty. Have you tried the other port on that nic and reconfiguring the vmbr0 network in Proxmox to use ens2f0 instead of ens2f1? Maybe the cable is connected in the wrong port of the nic?

 

[Bush_Kape]

network card decided to die, problem sloved