NS0-158 · Question #71
How many ISL ports are required between the cluster interconnect switches when using Cisco switches?
The correct answer is D. 8. When deploying NetApp ONTAP with Cisco switches for the cluster interconnect, 8 ISL (Inter-Switch Link) ports are typically required between the two switches to form a robust port channel for optimal bandwidth and redundancy.
Question
How many ISL ports are required between the cluster interconnect switches when using Cisco switches?
Options
- A2
- B4
- C6
- D8
- ENone; No ISLs are required
How the community answered
(45 responses)- A4% (2)
- C2% (1)
- D91% (41)
- E2% (1)
Why each option
When deploying NetApp ONTAP with Cisco switches for the cluster interconnect, 8 ISL (Inter-Switch Link) ports are typically required between the two switches to form a robust port channel for optimal bandwidth and redundancy.
Two ISL ports would not provide adequate bandwidth or redundancy for a critical NetApp ONTAP cluster interconnect.
Four ISL ports might be sufficient for smaller or less demanding clusters but is typically less than the recommended maximum for robust NetApp ONTAP deployments with Cisco switches.
Six ISL ports are not the standard recommendation for Cisco cluster interconnect switches in NetApp ONTAP environments.
For a NetApp ONTAP cluster utilizing Cisco Nexus switches as the cluster interconnect, 8 ISL ports are commonly recommended or required to form a port channel, ensuring sufficient bandwidth and redundancy between the two switches for critical cluster traffic.
ISL ports are essential for interconnecting the two cluster switches to provide redundancy and ensure full connectivity within the cluster, making 'None' an incorrect option.
Concept tested: NetApp ONTAP cluster interconnect ISL requirements
Source: https://docs.netapp.com/us-en/ontap/get-started/install-cluster-interconnect-switches-task.html
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