[c-nsp] forced up/up on a fiber link

[LM]

Hi all,

For copper ethernet port I know there is an option to force up/up with 
"no keepalive"

But, what about a fiber link?
I have here a 7606 with...
"Cisco 7600 Series SPA Interface Processor-400 Rev. 2.5"
"5-port Gigabit Ethernet Shared Port Adapter"


"no keepalive" command available under gi3/2/2, which it is a fiber port 
on the related cards I wrote before.

Now, I need to test a config, and I need to force up/up to one port 
without a fiber connected, is it possible? how?
I am still doing research but, not success so far.