The value of vRtrMplsXCNotifyRednEndIndex indicates which
vRtrMplsXCIndex is represented by the last bit in
vRtrMplsXCNotifRednIndicesBitMap.
The value vRtrMplsXCNotifyRednEndIndex can be useful for a sanity check
of vRtrMplsXCNotifyRednNumOfBitsSet.
vRtrMplsXCNotifyRednNumOfBitsSet. = (vRtrMplsXCNotifyRednEndIndex -
vRtrMplsXCNotifyRednStartIndex + 1).