tmnxOamMplsEchoDownstreamMapTlv 1.3.6.1.4.1.6527.3.1.2.11.5.3

The value of tmnxOamMplsEchoDownstreamMapTlv specifies the system value for the type of downstream map TLV to be inserted when launching MPLS echo requests. The value of tmnxOamMplsEchoDownstreamMapTlv is used on three occasions: 1. When a background LDP tree trace test is started (using tmnxOamLTtraceAutoAdminState), the value of tmnxOamMplsEchoDownstreamMapTlv specifies the type of downstream map TLV used during the test. 2. When a test of type 'lspTraceRoute' is created, with no value specified for the test's tmnxOamLspTrCtlDownstreamMapTlv object, tmnxOamLspTrCtlDownstreamMapTlv is set to the value of tmnxOamMplsEchoDownstreamMapTlv. 3. When a test of type 'ldpTreeTrace' is created, with no value specified for the test's tmnxOamLTtraceCtlDownstreamMpTlv object, tmnxOamLTtraceCtlDownstreamMpTlv is set to the value of tmnxOamMplsEchoDownstreamMapTlv. Example usage, for the second and third cases: suppose every node in this node's network supports the MPLS Echo Request/Reply DDMAP TLV, and the network operator wishes to use the enhanced functionality offered by the DDMAP TLV. Then, setting tmnxOamMplsEchoDownstreamMapTlv to 'ddmap(2)' simplifies configuration. The simplification: the tmnxOamLspTrCtlDownstreamMapTlv and tmnxOamLTtraceCtlDownstreamMpTlv objects need not be set when creating tests.