I am facing a very strange problem in the gigabit ethernet card of router.
Even if we physically disconnet the router ethernet cable the line protocol shows up only.
If we check show int gig0/1
it shows protocol up !!
Can it be IOs problem.
Due to this some other functions are hampering like interface tracking.
Any experience please share.
Is it possible that the interface has been configured with "no keepalive"? Configuring the interface this way will produce exactly the symtpoms that you describe in keeping the interface line protocol up even when the interface is not connected. If that is not the issue then please post the complete interface configuration, the output of show interface for the interface, and the output of show version.