"No gateway" when static IP address

Dear people,

I am using openSuse 13.1 x86_64. I need to setup my wired network configuration as static IP, not via DHCP.

And I edited the IP, Mask, Gateway, DNS through NetworkManager, However, it always shows "No gateway".

But other computer (windows/ubuntu) with the same cable pluged works fine.

Does anyone have ideas about it?