HPE7-A08 · Question #45

Refer to the exhibit. Both switches, Core-1 and Core-2, are configured with default spanning-tree priorities. Both switches appear as primary root bridges. What must be done to have only one…

The correct answer is B. Create matching MST configuration on Core-2. For MSTP, switches belong to the same spanning-tree domain only when they share an identical MST region configuration, which includes: VLAN-to-instance mappings Core-1 and Core-2 have different MST config IDs, revisions, digests, and instance mappings, so each forms its own MST…

Implement and Troubleshoot HPE Aruba Networking CX Switch Solutions

Question

Refer to the exhibit. Both switches, Core-1 and Core-2, are configured with default spanning-tree priorities. Both switches appear as primary root bridges. What must be done to have only one spanning tree domain?

Exhibit

Options

ACreate MST instances 1 and 2 on Core-2.
BCreate matching MST configuration on Core-2.
CSet the spanning tree priority to 1 on Core-1.
DSet the spanning tree priority to 1 on Core-2.

How the community answered

(55 responses)

A
11% (6)
B
58% (32)
C
25% (14)
D
5% (3)

Explanation

For MSTP, switches belong to the same spanning-tree domain only when they share an identical MST region configuration, which includes: VLAN-to-instance mappings Core-1 and Core-2 have different MST config IDs, revisions, digests, and instance mappings, so each forms its own MST region and becomes a root bridge independently. By configuring Core-2 with the same MST region parameters as Core-1, both switches will join the same MST region, allowing a single spanning-tree domain with a single root bridge.

Topics

#MSTP#MST configuration#spanning tree domain#root bridge

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