Several multicast protocols

PIM-DM intensive mode)
The PIM intensive mode is the preferred configuration in the multicast routing protocol. This Protocol is strongly supported by Cisco and provides easy configuration and troubleshooting methods. Similar to DVMRP, the PIM intensive mode does not have the characteristics of flooding or deleting. Therefore, it can still be used as an option for configuring short-term protocols for wide-area multi-point transfer. Meanwhile, the PIM Sparse Mode is a candidate for long-term backbone alternatives.
DVMRP
Remote vector multi-point transfer routing protocol (DVMRP), a branch of the RIP Protocol, is the first widely-configured multi-point transfer Routing Protocol and is developed to build an Internet multi-point transmission backbone (MBONE ).
As a research protocol, it has many features not available in other typical routing protocols. DVMRP encapsulates multi-point transmission routes and data packets in single-point transmission data packets, leading to the development of the "one-way" multi-point transmission IP address through the single-point transmission network. It also provides a bit rate limit "speed limit" for multi-point transmission communication for the routing Interface "), and "address locating" for the allocation Control of multi-point transmission of built-in Address information data packets established on the basis of the destination address "). DVMRP extends the application in the field of live time (TTL) in the IPv4 header to the fundamental Transmission Control "TTL limit" for multi-point transmission communication ).
MOSPF
The multi-point transfer extension of the Open Shortest Path First Protocol (MOSPF) is the data type and event that allows multi-point transfer groups and routing information contained in the OSPF structure. MOSPF is added with the data type and flag of the multicast group to indicate the multi-point transmission capability of the underlying network and the new router Function Based on OSPF. MOSPF allows only single-point transmission routers and multi-point transmission to allow mutual connection between routers, but does not include tunnel and Rate limiting functions.
Static multi-point transmission route
The static multi-point transmission routing technology is usually used at the branch of the multi-point transmission and single point transmission routing domain.