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NE20E-S V800R010C10SPC500 Feature Description - IP Multicast 01

This is NE20E-S V800R010C10SPC500 Feature Description - IP Multicast
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Basic Multicast Framework

Basic Multicast Framework

This section describes the basic multicast framework and key multicast techniques that transmit multicast data from a source to multiple receivers. Table 2-1 shows the key multicast techniques.

Table 2-1 Key multicast techniques

Multicast Technique


Host registration

Determines whether a receiver exists.

Multicast source discovery technology

Determines the multicast source.

Multicast addressing mechanism

Determines the multicast data destination.

Multicast routing

Forwards multicast data.

IP multicast is an end-to-end service. Figure 2-2 shows the four IP multicast functions from the lower protocol layer to the upper protocol layer.

Figure 2-2 IP multicast basic framework

The four functions operate as follows:

  • Addressing mechanism: transmits data to multicast groups based on multicast destination addresses.

  • Host registration: allows a host to dynamically join or leave a group, implementing group member management.

  • Multicast routing: sets up a distribution tree to transmit packets from a source to receivers.

  • Multicast application: To work together, multicast sources and receivers must support the same multicast application software, such as a video conferencing application. The TCP/IP protocol suite must support multicast data transmission and receipt.

Updated: 2019-01-03

Document ID: EDOC1100055119

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