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CX11x, CX31x, CX710 (Earlier Than V6.03), and CX91x Series Switch Modules V100R001C10 Configuration Guide 12

The documents describe the configuration of various services supported by the CX11x&CX31x&CX91x series switch modules The description covers configuration examples and function configurations.
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Applications

Applications

This section describes the applicable scenario of IGMP Snooping.

IGMP Snooping Application

Networking Description

As shown in Figure 8-110, multiple multicast sources such as Source1 and Source2 exist on a PIM network. The sources provide multicast video services for users on the LAN. Some users such as HostA and HostC on the LAN want to receive video data in multicast mode. To prevent multicast data from being broadcast on the LAN, configure IGMP snooping on Layer 2 multicast device to accurately forward multicast data on the Layer 2 network, which prevents bandwidth waste and network information leakage.

Figure 8-110 IGMP snooping networking

Deployed Features

You can deploy the following features to accurately forward multicast data on the network shown in Figure 8-110:

  • PIM and IGMP on the Layer 3 multicast device Router to route multicast data to user segments.
  • IGMP snooping on the Layer 2 device Switch so that Switch can set up and maintain a Layer 2 multicast forwarding table to forward multicast data to specified users.
  • IGMP snooping proxy after configuring IGMP snooping on Switch to release Router from processing a large number of IGMP messages.
  • IGMP snooping SSM mapping on Switch when receiver hosts running IGMPv1 or IGMPv2 want to use SSM.
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Updated: 2019-08-09

Document ID: EDOC1000041694

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