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NE40E V800R010C10SPC500 Configuration Guide - IP Multicast 01

This is NE40E V800R010C10SPC500 Configuration Guide - IP Multicast
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Overview of IGMP

Overview of IGMP

IGMP a signaling mechanism that sets up and maintains multicast member relationships between routers and their directly connected IP hosts.

IGMP implements the following functions on the host side and router side:
  • On the host side, IGMP allows hosts to dynamically join and leave multicast groups anytime and anywhere.

    NOTE:

    A host's operating system (OS) determines the IGMP version that the host supports.

  • On the router side, IGMP enables a router to determine whether multicast receivers of a specific group exist. Each host stores information about only the multicast groups it joins.

IGMP has three versions, as listed in Table 3-1:
Table 3-1 IGMP versions

IGMP Version

Model Supported

IGMPv1

Any-source multicast (ASM) and source-specific multicast (SSM)

To support SSM in IGMPv1, the SSM mapping technique is requried.

IGMPv2

ASM and SSM

To support SSM in IGMPv2, the SSM mapping technique is requried.

IGMPv3

ASM and SSM

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Updated: 2019-01-03

Document ID: EDOC1100055017

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