NVIDIA AI Infrastructure NCP-AII Question # 14 Topic 2 Discussion
NCP-AII Exam Topic 2 Question 14 Discussion:
Question #: 14
Topic #: 2
A network engineer is tasked with configuring the management, storage, and compute networks for a new DGX BasePOD deployment. Which statement best describes the network segmentation required for optimal operation?
A.
A single VLAN for all types of network traffic.
B.
Two networks: one for management and one for compute.
C.
Four networks: compute, storage, out-of-band, and management.
NVIDIA DGX BasePOD and SuperPOD reference architectures mandate strict network segmentation to ensure performance, security, and manageability.
Compute Network: Typically InfiniBand (or high-speed Spectrum-X Ethernet), dedicated solely to GPU-to-GPU collective communications (NCCL).
Storage Network: A high-bandwidth Ethernet or InfiniBand fabric specifically for data ingestion and model checkpointing, often utilizing GPUDirect Storage (GDS).
Management Network: Used for standard cluster administration, SSH, and software orchestration (e.g., Bright Cluster Manager or Kubernetes control plane traffic).
Out-of-Band (OOB) Network: A physically isolated network connected to the BMC ports for low-level system monitoring, power control, and remote console access, even when the OS is down.
A single VLAN (Option A) would cause massive congestion during training, as storage and management traffic would compete with high-frequency compute packets. The four-network model ensures that a "storm" in the storage fabric does not prevent an administrator from accessing the system via the management or OOB networks, which is essential for maintaining an AI Factory at scale.
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