Mellanox MT27500 Link to Port 1 is Down

I have Mellanox MT27500 dual port card which is installed on HP SL250s. Ubuntu 14.04.5 with 3.13.0-24-generic kernel is running on the server. Both port1 type and port 2 type are defined as eth. I have connected port 1 and port 2 to switch with same type of cable but only port 2 seems linked. Led belongs to port 1 is off.

Do you have any idea to use both ports?

$ sudo lspci | grep Mellanox
07:00.0 Network controller: Mellanox Technologies MT27500 Family [ConnectX-3]

$ cat /sys/bus/pci/devices/0000\:07\:00.0/mlx4_port1
eth
$ cat /sys/bus/pci/devices/0000\:07\:00.0/mlx4_port2
eth

$ sudo ethtool eth0
Settings for eth0:
  Supported ports: [ TP ]
  Supported link modes:   10000baseT/Full
  Supported pause frame use: No
  Supports auto-negotiation: No
  Advertised link modes:  10000baseT/Full
  Advertised pause frame use: No
  Advertised auto-negotiation: No
  Speed: Unknown!
  Duplex: Unknown! (255)
  Port: Twisted Pair
  PHYAD: 0
  Transceiver: internal
  Auto-negotiation: off
  MDI-X: Unknown
  Supports Wake-on: d
  Wake-on: d
  Current message level: 0x00000014 (20)
        link ifdown
  Link detected: no

$ sudo ethtool eth1
Settings for eth1:
  Supported ports: [ TP ]
  Supported link modes:   10000baseT/Full
  Supported pause frame use: No
  Supports auto-negotiation: No
  Advertised link modes:  10000baseT/Full
  Advertised pause frame use: No
  Advertised auto-negotiation: No
  Speed: Unknown!
  Duplex: Unknown! (255)
  Port: Twisted Pair
  PHYAD: 0
  Transceiver: internal
  Auto-negotiation: off
  MDI-X: Unknown
  Supports Wake-on: g
  Wake-on: g
  Current message level: 0x00000014 (20)
        link ifdown
  Link detected: no

$ sudo ip link set dev eth0 up
$ sudo ip link set dev eth1 up

$ ip link show eth0
12: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state   DOWN mode DEFAULT group default qlen 1000
    link/ether 00:02:c9:fc:25:a0 brd ff:ff:ff:ff:ff:ff
$ ip link show eth1
13: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT group default qlen 1000
    link/ether 00:02:c9:fc:25:a1 brd ff:ff:ff:ff:ff:ff