wfMTMStaticFwdPreference
1.3.6.1.4.1.18.3.5.3.2.6.12.1.7
If not 0, indicates this policy overwrites multicast protocols
otherwise it can be overwritten by multicast protocols.
If it overwrites protocols, then forwarding decision is made
purely according to the policy; if it can be
overwritten by protocols, then protocols have to be
consulted to make the decision.
For example, s policy 'overwritten_by_procotol' can be
used in the following situation:
Before a multicast protocol comes up on an incoming
circuit, forwarding decision is made according to
the policy. After the protocol comes up, the
protocol will make the decision