H12-921_V1.0 Question #39: Real Exam Question with Answer & Explanation

Question

Options

• ABGP NG MVPN carries I-PMSI information for I-PMSI tunnel establishment
• BThere is no need to deploy multicast in the underlay
• CWhen deploying multicast using PIM-SM mode, separate RPs need to be deployed on both the
• DThe VXLAN tunnel can still be configured as headend replication without special configuration

Explanation

• The RP of the underlay multicast network needs to be configured in the VPN instance that carries the overlay multicast traffic for the overlay network RP of an overlay multicast network. That is, the RP of both the underlay and the overlay need to be configured in the same physical network (in the figure, Public VRF refers to the underlay). The network control plane is not a VPN entity that carries specific services Example). - Since the access location of the overlay service multicast source is uncertain, the underlay multicast uses the ASM service model. 稢onfigure PIM SM function enablement on all Layer 3 interfaces of Leaf and Spine interconnection, built on top of the PIM SM protocol Underlay multicast trees. ?From the perspectives of network architecture, stability, and alleviating the pressure on VTEP devices, it is recommended that Spine do RP and publish the RP address to Underlay Network. To alleviate the burden of a single RP, implement RP backup, optimize the multicast data forwarding path, and deploy Anycast RP on 2 Spines with dual-node redundancy.

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