NVIDIA NCP-AIN Exam - Topic 2 Question 17 Discussion

Actual exam question for NVIDIA's NCP-AIN exam

Question #: 17
Topic #: 2

[InfiniBand Troubleshooting]

You are troubleshooting an InfiniBand network issue and need to check the status of the InfiniBand interfaces. Which command should you use to display the state, physical state, and link layer of InfiniBand interfaces?

Aibv_devices -c mlx5_0

Bcat /proc/net/ib/device

Csudo ibnodes -C mlx5_0

Dibstat -d mlx5_X

Show Suggested Answer

Suggested Answer: D

The ibstat command is utilized to display the operational status of InfiniBand Host Channel Adapters (HCAs). It provides detailed information, including the state (e.g., Active, Down), physical state (e.g., LinkUp, Polling), and link layer (e.g., InfiniBand, Ethernet) of each port on the HCA. This information is crucial for diagnosing connectivity issues and ensuring that the InfiniBand interfaces are functioning correctly.

Reference Extracts from NVIDIA Documentation:

'The ibstat command displays the status of the host channel adapters (HCAs) in your InfiniBand fabric. The status includes the HCAs' state, physical state, and link layer.'

'For proper operation, you are looking for 'State: Active' and 'Physical State: LinkUp'.'

by Selma at Apr 10, 2026, 02:36 AM

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3 months ago

I think the command we need is related to checking the status of the interfaces, but I can't remember if it's ibstat or something else.

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