vRtrPimNgDataMtCGrpSrcState
1.3.6.1.4.1.6527.3.1.2.50.2.8.1.5
The value of vRtrPimNgDataMtCGrpSrcState indicates the state of this
Multicast Tunnel(MT) (S,G).
If the data-mdt is bound to a (C-S,G) on the ingress PE and if the PE
has sent out a MDT Join TLV, the state will be txJoinPending. The
state will change to txJoined when the (C-S,G) traffic is switched over
to the new data mdt.
If the data-mdt is not bound to a (C-S,G) on the egress PE,
the state will be rxNotJoined. The state will be rxJoined if the
(C-S,G) has bound to the data-mdt.