In Multicast VPN (MVPN) implementations, which two of the following statements are regarding the Default MDT Group? (Choose two.)

Question

Options

• AIt is used for PIM control traffic.
• BIt is optionally configured for a high bandwidth multicast source to reduce multicast traffic replication
• CWithin the VPF configuration in the PE router, multiple Default MDT groups are configured so each
• DThere is a reduced multicast state in the MPLS core P routers.
• EWhen multicast traffic exceeds a certain configured threshold, traffic from the Data MDT is switched

• A
  76% (39)
• B
  2% (1)
• C
  16% (8)
• E
  6% (3)

Explanation

MVPN supports two MDT types: -Default MDT-The default MDT is a permanent channel for PIM control messages and streams between all PE routers in a particular multicast domain. All multicast traffic in the default MDT is replicated to every other PE router in the domain. Each PE router is logically seen as a PIM neighbor (one hop away) from every other PE router in the domain. -Data MDT-Data MDTs are optional. If enabled, they are dynamically created to provide optimal paths for high-bandwidth transmissions, such as full-motion video, that do not need to be sent to every PE router. This allows for on-demand forwarding of high-bandwidth traffic between PE routers, so as to avoid flooding every PE router with every high-bandwidth stream that might be

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