The value of vRtrMvpnIpmsiBfdRootMult specifies the number of
consecutive BFD messages that must be missed from the peer before
the BFD session state is changed to down and the upper level
protocols (OSPF, IS-IS or PIM) are notified of the fault.
The value of this object is only applicable when vRtrMvpnIpmsiType is
set to 'rsvp'.
An 'inconsistentValue' error is returned if an attempt is made to modify
the value of this object when vRtrMvpnIpmsiEnableBfdRoot is set to false.