The value of vLdpServFec129NumOutLabels gives the number of
labels that have been received from the peer associated with this
FEC. This value also indicates whether vLdpServFec129OutLabel1
entry contain valid information i.e. if the value of
vLdpServFec129NumOutLabels is 1, then vLdpServFec129OutLabel1
will contain valid label information.