This object identifies an outgoing branch from this LSR
for this tunnel. Its value is unique within the context of
the tunnel.
If MPLS-LSR-STD-MIB is implemented, this object should
contain an index into mplsOutSegmentTable.
Under all circumstances, this object should contain
the same value as cmplsTeP2mpTunnelDestBranchOutSegment for
destinations reached on this branch.