Represents the logging-in device.
If the value of the corresponding instance of
cdpvmLoginDevType is 'pwwn', then this object
contains a pWWN.
If the value of the corresponding instance of
cdpvmLoginDevType is 'nwwn', then this object
contains a nWWN.
This object MUST be set to a valid value
before or concurrently with setting the
corresponding instance of cdpvmRowStatus to
'active'.
The agent should not allow creation of 2 entries
in this table with same values for cdpvmLoginDev
and cdpvmLoginDevVsan.