Description: An entry in this table represents an MPLS tunnel. An entry can be created by a network administrator or by an SNMP agent as instructed by an MPLS signalling protocol. Whenever a new entry is created with zxr10MplsTunnelIsIf set to true(1), then a corresponding entry is created in ifTable as well (see RFC 2863). The ifType of this entry is zxr10MplsTunnel(150). A tunnel entry needs to be uniquely identified across a MPLS network. Indices zxr10MplsTunnelIndex and zxr10MplsTunnelInstance uniquely identify a tunnel on the LSR originating the tunnel. To uniquely identify a tunnel across an MPLS network requires index zxr10MplsTunnelIngressLSRId. The last index zxr10MplsTunnelEgressLSRId is useful in identifying all instances of a tunnel that terminate on the same egress LSR.