When it comes to allocating ports to a VDC (Virtual Device Context),there is a lot of information on the web to help you out.
Now, lets just say that you want to remove a port from a VDC.
Until you know how to do it, it is not the normal Cisco way of doing a "no" in front of the command.
Usually you will just enter the non-default VDC:
#vdc servers
Now you can allocate ports, something like this:
allocate interface Ethernet1/2,Ethernet1/4,Ethernet1/6,Ethernet1/8
allocate interface Ethernet2/2,Ethernet2/4,Ethernet2/6,Ethernet2/8
In order to get these ports back to the default VDC, it makes sense once someone explains it.
Even if you are in the default VDC, you need to enter the "default" VDC
#vdc "name of default VDC"
Now once you are there, you just do the same thing to get them back.
#allocate interface Ethernet1/2,Ethernet1/4,Ethernet1/6,Ethernet1/8
Now the ports have no configuration and are ready to be re-used.
