This read-create Integer32 (1-255) sets the administrative preference of a static multicast route entry, used to arbitrate between multiple candidate RPF routes to the same source. Admins lower this value to make a particular static multicast route more preferred than others (including dynamically learned RPF information) for the same source. Setting agentIpStaticMRoutePreference to 1 on a static route ensures it wins over a less-preferred dynamically derived RPF path to the same multicast source.