Configuring Switching
184
S3300 Smart Managed Pro Switch
MVR Configuration
IGMP snooping helps limit multicast traffic when member ports are in the same VLAN;
however, when ports belong to different VLANs, a copy of the multicast stream is sent to each
VLAN that has member ports in the multicast group. MVR eliminates the need to duplicate
the multicast traffic when multicast group member ports belong to different VLANs.
MVR uses a dedicated multicast VLAN to forward multicast traffic over the L2 network. Only
one MVLAN can be configured per switch, and it is used only for certain multicast traffic, such
as traffic from an IPTV application, to avoid duplication of multicast streams for clients in
different VLANs. Clients can dynamically join or leave the multicast VLAN without interfering
with their membership in other VLANs.
MVR, like IGMP snooping, allows a layer 2 switch to listen to IGMP messages to learn about
multicast group membership.
From the MVR configuration menu, you can access the following links:
• MVR Configuration on page 185
• MVR Group Configuration on page 186
• MVR Interface Configuration on page 187
• MVR Group Membership on page 187
• MVR Statistics on page 188
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