Link not detected - Red Hat Linux HP Blade DL380p Gen8

Hi Admins

One one of the RHEL 6 server, I am not able to detect 10G fiber link. ethtool is showing link not detected.

Settings for eth4:
        Supported ports: [ FIBRE ]
        Supported link modes:   1000baseT/Full
                                10000baseT/Full
        Supported pause frame use: Symmetric Receive-only
        Supports auto-negotiation: No
        Advertised link modes:  10000baseT/Full
        Advertised pause frame use: No
        Advertised auto-negotiation: No
        Speed: Unknown!
        Duplex: Unknown! (255)
        Port: FIBRE
        PHYAD: 1
        Transceiver: internal
        Auto-negotiation: off
        Supports Wake-on: d
        Wake-on: d
        Current message level: 0x00000000 (0)

        Link detected: no

Also

cat /sys/class/net/eth4/carrier
0

Cabling guys has plugged in the cables , but not seeing the blinks as well.

What could be the reason. I have tried to bring it up, no luck...

No LEDs lighted nor blinking sound like a hardware problem. Is the receiving port on the other end (switch, hub, ...) OK?

Thanks...

Its fixed. Something was wrong at the switch end. I had to setup the speed manually to 1G and it detected "yes".

thanks again.