Using a used Juniper EX4300-48p here which I needed to configure some multicast switching on to support some video streaming needs came across this "error", 'warning: requires 'ospf2' license'. Google-fu enabled me to discover that to use the following features on the EX4300 switches, you must install an EFL:
- IGMP (Internet Group Management Protocol) version 1 (IGMPv1), IGMPv2, and IGMPv3
- Multicast Source Discovery Protocol (MSDP)
- OSPFv2/v3
- Protocol Independent Multicast (PIM) dense mode, PIM source-specific mode, PIM sparse mode