This variable is valid only for the remote
mirroring source or destination switch.
The value will be ignored otherwise. A
value of 0 means that the UDP port
is irrelevant for the tunnel type. If this
value is non-zero it must be duplicated
in the tunnelInetConfigID value (this
will ensure that a given UDP port can
only be associated once with a given
tunnelInetConfigAddressType,
tunnelInetConfigLocalAddress,
tunnelInetConfigRemoteAddress,
tunnelInetConfigEncapsMethod combination).