Hello, I have a newly created datacenter in 3.2.1 with f18 host where ovirtmgmt is set as vlan. host is installed but after some minutes I get this messages: Host management02 moved to Non-Operational state because interfaces 'em1.311' are down but are needed by networks 'ovirtmgmt' in the current cluster from an operating system point of view it seems that all is ok on the host [root@management02 ~]# ip addr list 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo 2: em1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000 link/ether 00:15:17:b4:99:3c brd ff:ff:ff:ff:ff:ff 3: em2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000 link/ether 00:15:17:b4:99:3d brd ff:ff:ff:ff:ff:ff inet 213.205.41.202/26 brd 213.205.41.255 scope global em2 4: em1.311@em1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master ovirtmgmt state UP link/ether 00:15:17:b4:99:3c brd ff:ff:ff:ff:ff:ff 5: ovirtmgmt: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP link/ether 00:15:17:b4:99:3c brd ff:ff:ff:ff:ff:ff inet 10.39.71.12/26 brd 10.39.71.63 scope global ovirtmgmt 7: ;vdsmdummy;: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN link/ether 36:98:c3:39:5f:43 brd ff:ff:ff:ff:ff:ff 8: bond0: <BROADCAST,MULTICAST,MASTER> mtu 1500 qdisc noop state DOWN link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff 9: bond4: <BROADCAST,MULTICAST,MASTER> mtu 1500 qdisc noop state DOWN link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff 10: bond1: <BROADCAST,MULTICAST,MASTER> mtu 1500 qdisc noop state DOWN link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff 11: bond2: <BROADCAST,MULTICAST,MASTER> mtu 1500 qdisc noop state DOWN link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff 12: bond3: <BROADCAST,MULTICAST,MASTER> mtu 1500 qdisc noop state DOWN link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff [root@management02 ~]# ethtool em1 Settings for em1: Supported ports: [ FIBRE ] Supported link modes: 1000baseT/Full Supported pause frame use: No Supports auto-negotiation: Yes Advertised link modes: 1000baseT/Full Advertised pause frame use: Symmetric Advertised auto-negotiation: Yes Speed: 1000Mb/s Duplex: Full Port: FIBRE PHYAD: 0 Transceiver: internal Auto-negotiation: on Supports Wake-on: pumbg Wake-on: g Current message level: 0x00000007 (7) drv probe link Link detected: yes [root@management02 ~]# ethtool em1.311 Settings for em1.311: Supported ports: [ FIBRE ] Supported link modes: 1000baseT/Full Supported pause frame use: No Supports auto-negotiation: Yes Advertised link modes: 1000baseT/Full Advertised pause frame use: Symmetric Advertised auto-negotiation: Yes Speed: 1000Mb/s Duplex: Full Port: FIBRE PHYAD: 0 Transceiver: internal Auto-negotiation: on Link detected: yes On engine [root@management01 ~]# ip addr list 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo 2: em1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000 link/ether 00:15:17:b1:1f:e8 brd ff:ff:ff:ff:ff:ff 3: em2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000 link/ether 00:15:17:b1:1f:e9 brd ff:ff:ff:ff:ff:ff inet 213.205.41.201/26 brd 213.205.41.255 scope global em2 4: em1.192@em1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP link/ether 00:15:17:b1:1f:e8 brd ff:ff:ff:ff:ff:ff inet 192.168.230.1/24 brd 192.168.230.255 scope global em1.192 5: em1.311@em1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP link/ether 00:15:17:b1:1f:e8 brd ff:ff:ff:ff:ff:ff inet 10.39.71.11/26 brd 10.39.71.63 scope global em1.311 [root@management01 ~]# ethtool em1 Settings for em1: Supported ports: [ FIBRE ] Supported link modes: 1000baseT/Full Supported pause frame use: No Supports auto-negotiation: Yes Advertised link modes: 1000baseT/Full Advertised pause frame use: Symmetric Advertised auto-negotiation: Yes Speed: 1000Mb/s Duplex: Full Port: FIBRE PHYAD: 0 Transceiver: internal Auto-negotiation: on Supports Wake-on: pumbg Wake-on: g Current message level: 0x00000007 (7) drv probe link Link detected: yes [root@management01 ~]# ethtool em1.311 Settings for em1.311: Supported ports: [ FIBRE ] Supported link modes: 1000baseT/Full Supported pause frame use: No Supports auto-negotiation: Yes Advertised link modes: 1000baseT/Full Advertised pause frame use: Symmetric Advertised auto-negotiation: Yes Speed: 1000Mb/s Duplex: Full Port: FIBRE PHYAD: 0 Transceiver: internal Auto-negotiation: on Link detected: yes what can be the cause? what is the check that runs and move the host to non-operational? Thanks Gianluca