The human-readable name of the Multicast
Virtual Private Network (MVPN) routing/forwarding
instance (MVRF). When the 'mvrf' bit of
cseFlowMcastQueryMask object in the same row is on,
an appropriate value should be specified and only flows
with the specified MVRF name will be contained in the
result table. If the 'mvrf' bit in the associated
cseFlowMcastQueryMask is cleared, this object is ignored
during the query, and all the flows corresponding to the
default MVRF will be considered.