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NS0-157 · Question #4

A customer wants to retire a broadcast domain called bcast1 from the cluster. All network ports and data LIFs previously using bcast1 have been moved to another broadcast domain. When the…

The correct answer is A. The IP space, that the broadcast domain uses, still exists. In ONTAP, broadcast domains are contained within IP spaces, and an active IP space with unresolved dependencies blocks deletion of any broadcast domain it owns.

Network Configuration and Data Access

Question

A customer wants to retire a broadcast domain called bcast1 from the cluster. All network ports and data LIFs previously using bcast1 have been moved to another broadcast domain. When the administrator attempts to delete the broadcast domain, the deletion fails. What is causing the problem?

Options

  • AThe IP space, that the broadcast domain uses, still exists.
  • BThe cluster ports are using the bcast1 broadcast domain.
  • CThere are still subnets associated with the broadcast domain.
  • DThe SVM has not been deleted.

How the community answered

(23 responses)
  • A
    83% (19)
  • B
    4% (1)
  • C
    9% (2)
  • D
    4% (1)

Why each option

In ONTAP, broadcast domains are contained within IP spaces, and an active IP space with unresolved dependencies blocks deletion of any broadcast domain it owns.

AThe IP space, that the broadcast domain uses, still exists.Correct

ONTAP's networking hierarchy places IP spaces above broadcast domains; when the IP space that owns bcast1 still exists with active configuration, ONTAP prevents deletion of the broadcast domain as part of dependency enforcement. The administrator must first remove or reassign the IP space-level dependency before the broadcast domain can be deleted. This is a common oversight when retiring a broadcast domain because ports and LIFs can be moved while the parent IP space relationship remains intact.

BThe cluster ports are using the bcast1 broadcast domain.

The question explicitly states that all network ports have already been moved away from bcast1, so cluster ports are not the cause of the deletion failure.

CThere are still subnets associated with the broadcast domain.

Subnets associated with a broadcast domain would also block deletion, but the question does not indicate any subnets remain tied to bcast1.

DThe SVM has not been deleted.

Deleting an SVM is not a prerequisite for deleting a broadcast domain; SVMs and broadcast domains are independent administrative objects in ONTAP.

Concept tested: ONTAP broadcast domain and IP space dependency

Source: https://docs.netapp.com/us-en/ontap/networking/delete_a_broadcast_domain.html

Topics

#broadcast domain#IP space#subnet#network deletion

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