When the MA5600T configures the multicast service, which of the following options must be configured, otherwise the multicast program may not be able to be viewed?

Question

Options

• Aigmp user
• Bigmp program
• Cigmp profile
• DMulticast VLAN

• A
  82% (28)
• B
  12% (4)
• C
  6% (2)

Explanation

On the MA5600T, configuring igmp user (A) is mandatory because it registers the subscriber port as an IGMP-capable user on the system - without this, the device will not process IGMP join requests from that subscriber, and multicast streams cannot be delivered to them. Configuring a Multicast VLAN (D) is equally mandatory because it establishes the Layer 2 path over which multicast traffic travels from the upstream network to subscribers; without a multicast VLAN, the multicast frames have no forwarding domain and cannot reach end users.

igmp program (B) is used to define specific channel entries and apply access control policies, but the system can forward multicast traffic without explicitly listing every program, making it optional for basic functionality. igmp profile (C) is an optional policy object that controls behaviors like maximum group count or preview limits; it enhances control but is not required for multicast streams to be viewable.

Memory tip: Think of A and D as the two essentials - the "who" and the "where." The igmp user answers "who is allowed to watch," and the multicast VLAN answers "where does the content travel." Without either, the chain breaks and nothing plays.

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