This object allows the administrator to configure the mode of tunnel. The value unidirectional (0) indicates that the direction of the tunnel is only single direction. The value coroutedBidirectional (1) indicates a bidirectional LSP between LSR's A and B which consists of two unidirectional LSPs, one from A to B (forward LSP) and the other from B to A (reverse LSP). Both these LSP's are regarded as a pair providing a single logical bidirectional transport path. The forward and reverse LSP passes through same set of nodes (or LSR's). A single entry in mplsTunnelTable is enough to represent this type of tunnel which contains label binding association for both forward and reverse LSP. i.e., mplsTunnelTable points to a single entry in mplsXCTable which inturn contains both forward and reverse label bindings. The value associatedBidirectional (2) indicates a bidirectional LSP between LSR's A and B which consists of two unidirectional LSPs, one from A to B (forward LSP) and the other from B to A (reverse LSP). Both these LSP's are regarded as a pair providing a single logical bidirectional transport path. The forward and reverse LSP need not pass through same set of nodes (or LSR's). 2 entries should be created mplsTunnelTable to represent this type of tunnel which contains individual label binding association for forward and reverse LSP's. Association between forward and reverse LSP is achieved by configuring the objects fsMplsTpTunnelDestTunnelIndex and fsMplsTpTunnelDestTunnelLspNum in fsMplsTpTunnelTable.