The AI assistant agrees with the suggested answer of DE.
Reasoning: Deploying a new Cisco ACI Multi-Pod setup requires careful consideration of the Inter-Pod Network (IPN) configuration to ensure seamless communication between the pods. Let's analyze each option:

Option A: Configure MP-BGP on IPN routers that face the Cisco ACI spines. While MP-BGP is crucial for inter-pod control plane communication, it is generally configured automatically during the Multi-Pod setup using the Multi-Pod wizard. You might need to verify the configuration but it is not a direct action to initially *deploy* the Multi-Pod.
Option B: Connect all spines to the IPN. This is a necessary action because spine switches need IP reachability across the IPN to communicate with spines in other pods.
Option C: Configure anycast RP for the underlying multicast protocol. Anycast RP is typically used for multicast routing in the IPN but it is usually set up when multicast is specifically required between pods, or if you need PIM enabled, which is not necessarily a pre-requisite for a basic Multi-Pod deployment.
Option D: Configure the TEP pool of the new pod to be routable across the IPN. This is a crucial step because the Tunnel Endpoints (TEPs) in different pods need to communicate with each other over the IPN. The TEP pool assigned to the new pod must be routable across the IPN to ensure VXLAN traffic can flow between the pods.
Option E: Increase interface MTU for all IPN routers to support VXLAN traffic. This is another essential configuration step. VXLAN adds an overhead to the original Ethernet frame, so the MTU of the IPN routers must be increased to accommodate the larger packet size. Failure to do so can result in fragmentation and performance issues.

Therefore, the two most important and direct actions for deploying a new Cisco ACI Multi-Pod setup are configuring the TEP pool to be routable across the IPN (Option D) and increasing the interface MTU on the IPN routers to support VXLAN (Option E).

Reasons for not choosing the other answers:

Option A is generally configured automatically during the Multi-Pod setup.
Option B is necessary but not listed as one of the two correct options.
Option C is not always a pre-requisite for initial Multi-Pod setup, especially if multicast is not immediately required between pods.

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