This object define the relative set-up priority of the VC
in a lowest-to-highest fashion, where 0 is the highest
priority. VCs with the same priority are treated with
equal priority. Dropped VC will be set 'dormant' (as
indicated in cpwVcOperStatus).
This value is significant if there are competing resources
between VCs and the implementation support this feature.
If not supported or not relevant, the value of zero MUST
be used.