The table lists the Data Multicast Tunnel(MT) interfaces.
An MT can be thought of as a connector between a set of PE routers
forming a Multicast Domain. From the perspective of a VPN-specific
PIM instance, an MT is a single multi-access interface.
An MT interface is created whenever the threshold of a C-(S,G)
exceeds the configured threshold value specified by
vRtrPimNgDataMtThd. If the data-threshold goes below the value
specified by vRtrPimNgDataMtThd, the MT interface is automatically
deleted. vRtrPimNgDataMtThd is present in another table
vRtrPimNgDataMtThdTable.