Hi we are running arround 115 linux servers on ESX4 datacenter, lately we started to experience random NICs link drop on guests when restarting network or rebooting VM Linux server.
When I restart network manualy (couple of restarts) link is detected again.
Thanks for any hints.
dmesg output
eth0: intr type 2, mode 0, 1 vectors allocated
eth0: NIC Link is Up 10000 Mbps
eth0: NIC Link is Down
eth1: intr type 2, mode 0, 1 vectors allocated
eth1: NIC Link is Up 10000 Mbps
eth1: NIC Link is Up 10000 Mbps
netstat -i
Kernel Interface table
Iface MTU Met RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP TX-OVR Flg
eth0 1500 0 5205 0 0 0 0 0 0 0 BMU
eth1 1500 0 1250 0 0 0 238 0 0 0 BMRU
ethtool eth0
Settings for eth0:
Supported ports:
Supported link modes: 1000baseT/Full
10000baseT/Full
Supports auto-negotiation: No
Advertised link modes: Not reported
Advertised auto-negotiation: No
Speed: Unknown!
Duplex: Unknown! (255)
Port: Twisted Pair
PHYAD: 0
Transceiver: internal
Auto-negotiation: off
Supports Wake-on: uag
Wake-on: d
Link detected: no
ethtool eth1
Settings for eth1:
Supported ports:
Supported link modes: 1000baseT/Full
10000baseT/Full
Supports auto-negotiation: No
Advertised link modes: Not reported
Advertised auto-negotiation: No
Speed: 10000Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 0
Transceiver: internal
Auto-negotiation: off
Supports Wake-on: uag
Wake-on: d
Link detected: yes
