NCP-AII Question 36
Select 4You are deploying an AI workload that requires low-latency communication between compute nodes in a data center. The infrastructure uses InfiniBand as the interconnect and NVIDIA Spectrum-X™ for Ethernet switching. To optimize traffic flow, you need to configure routing tables on both InfiniBand and Spectrum-X. Which of the following steps are required to achieve this?
- A
Define proper SL (Service Levels) mappings in the InfiniBand subnet manager for traffic prioritization.
- B
Use NVIDIA UFM (Unified Fabric Manager) to configure and monitor routes on the InfiniBand fabric.
- C
Configure ECMP (Equal-Cost Multi-Path) routing on Spectrum-X switches for optimal load balancing.
- D
Set up VLANs on InfiniBand to segment traffic and improve network isolation.
- E
Verify routing table configurations on Spectrum-X using the NetQ management tool.
Show answer and explanation
Correct answers: A, B, C, E
Explanation
Configuring routing tables on InfiniBand and NVIDIA Spectrum-X networks requires proper setup of traffic prioritization, route management, and load balancing. InfiniBand relies on SL mappings and tools like UFM to manage its routes, while Spectrum-X benefits from ECMP for load balancing and tools like NetQ for troubleshooting. VLANs are not applicable to InfiniBand networks, which use partitioning instead.
- A. Correct.
Defining SL mappings in the InfiniBand subnet manager is essential for prioritizing traffic and ensuring quality of service (QoS) in the InfiniBand fabric.
- B. Correct.
NVIDIA UFM is the recommended tool for configuring, monitoring, and managing routes on an InfiniBand fabric, ensuring efficient communication between nodes.
- C. Correct.
Configuring ECMP on Spectrum-X switches improves load balancing and supports optimal traffic flow across the Ethernet fabric, which is crucial in high-performance AI workloads.
- D. Incorrect.
VLANs are not a feature of InfiniBand; they are specific to Ethernet networks. InfiniBand uses partitioning for segmentation, not VLANs.
- E. Correct.
NetQ is a powerful tool for verifying and troubleshooting routing table configurations on NVIDIA Spectrum-X switches, ensuring that the setup aligns with desired policies.