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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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Principles

Principles

This section describes the implementation of multicast VLAN replication.

Multicast VLAN Replication Based on User VLANs

Switches support the binding between user VLANs and the multicast VLAN to implement multicast packet replication in different user VLANs. Multicast VLAN replication based on user VLANs is the core of the multicast VLAN replication function. As shown in Figure 8-119, the upstream device only needs to send one copy of the multicast data to the switch configured with multicast VLAN replication. The switch then copies multicast data and sends the data to different user VLANs. This reduces bandwidth consumption between the upper-layer device and the switch.
Figure 8-119 VLAN-based multicast VLAN replication

Interface-based Multicast VLAN Replication

Switches support the binding between the user VLAN and multicast VLAN on user-side interfaces. This allows multicast data to be replicated for different user VLANs and implements interface-based multicast service isolation.

As shown in Figure 8-120, ISP1 and ISP2 provide multicast services on the network. HostA and HostB obtain the multicast services from ISP1, and HostC and HostD obtain the multicast services from ISP2. To prevent multicast data from being sent to all hosts, configure MVLAN1 and MVLAN2 for ISP1 and ISP2 respectively. Bind UVLAN to MVLAN1 on inbound interfaces of HostA and HostB. Bind UVLAN to MVLAN2 on inbound interfaces of HostC and HostD. Multicast data provided by ISP1 is sent to HostA and HostB, and that provided by ISP2 is sent to HostC and HostD.

Figure 8-120 Interface-based multicast VLAN replication

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Updated: 2019-08-09

Document ID: EDOC1000041694

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