No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

Configuration Guide - IP Multicast

CloudEngine 12800 and 12800E V200R005C10

This document describes the configurations of IP multicast, including IP multicast basics, IGMP, MLD, PIM (IPv4), PIM (IPv6), MSDP, multicast VPN, multicast route management (IPv4), multicast route management (IPv6), IGMP snooping, MLD snooping, static multicast MAC address, multicast VLAN, multicast network management.
Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Multicast Concept

Multicast Concept

Multicast transmits data from one source to multiple receivers. Figure 1-3 shows the multicast transmission model. HostA and HostC are interested in information sent from Source and request the information. The data sent from Source is received only by HostA and HostC.

Figure 1-3 Multicast transmission

Entities in an IP multicast model are:

  • Multicast group: a group of receivers identified by a multicast IP address. User hosts (or other receiver devices) that have joined a multicast group become members of the group and can identify and receive the IP packets destined for the multicast group address.
  • Multicast source: a sender of multicast data. "Source" in Figure 1-3 is a multicast source. A multicast source can simultaneously send data to multiple multicast groups. Multiple multicast sources can send data to a multicast group simultaneously. Generally, a multicast source does not need to join a multicast group.
  • Multicast group member: a host that has joined a multicast group. HostA and HostC in Figure 1-3 are multicast group members. Memberships of a multicast group change dynamically. Hosts can join or leave a multicast group at any time. Members of a multicast group can be located anywhere on a network.
  • Multicast router: a router or Layer 3 switch that supports IP multicast. The routers in Figure 1-3 are multicast routers. They provide multicast routing functions, and those connected to user network segments also provide multicast member management functions.

Table 1-1 provides an analogy to explain the concept of IP multicast.

Table 1-1 Analogy between TV broadcasting and multicast transmission

Sequence

TV Broadcasting

Multicast Transmission

1

A television station sends data to its channel.

A multicast source sends data to a multicast group.

2

Some audience members turn on their TV sets and select this channel.

Receivers join the multicast group.

3

TV sets play this channel.

Member hosts receive data sent to the multicast group.

4

Audience members switch to other channels or turn on/off their TV sets.

Member hosts dynamically join or leave multicast groups.

Translation
Download
Updated: 2019-04-20

Document ID: EDOC1100074724

Views: 45062

Downloads: 13

Average rating:
This Document Applies to these Products
Related Version
Related Documents
Share
Previous Next