Sparse Mode (PIM-SM): IGMP v1, v2, and v3: (Internet Group Management Protocol, Version 2) (Internet Group Management Protocol, Version 3) Multicast Listener Discovery (MLD v1 and v2): (Multicast Listener Discovery (MLD) for IPv6) (Multicast Listener Discovery Version 2 (MLDv2) for IPv6) Virtual Router Redundancy Protocol (VRRP v2): User interface XORP provides a command line interface for interactive configuration and operation monitoring. The interface is implemented as a distinct application called xorpsh, that may be invoked by multiple users simultaneously. It interacts via interprocess communication with the router core modules. The command line language is modelled after that of Juniper Networks's JunOS platform. See also List of open source routing platforms References External links Official website SourceForge website Release Notes Slashdot discussion Free routing software