Which minimal configurations must becompleted for MSTP to work correctly? (Select two.)
A.
MSTPregion
B.
bridge priority number
C.
revision number
D.
MSTP enabled interfaces
E.
creating MSTP instances
The Answer Is:
A, C
This question includes an explanation.
Explanation:
The question asks for the minimal configurations required for Multiple Spanning Tree Protocol (MSTP) to work correctly on AOS-CX switches.
Analysis of Options:
Option A:Correct. The MSTP region name must be configured to define the MSTP region and ensure switches belong to the same region.
Option B:Incorrect. Bridge priority is optional and defaults to 32768; it’s not mandatory for MSTP functionality.
Option C:Correct. The MSTP revision number is required to ensure consistency across switches in the same region.
Option D:Incorrect. Enabling MSTP on interfaces is automatic for VLAN-enabled ports; explicit configuration is not mandatory.
Option E:Incorrect. Creating MSTP instances is optional and only needed for specific VLAN-to-instance mappings.
Why A and C are Correct:MSTP requires a consistent region configuration across all switches to function correctly. The minimal configuration includes:
MSTP region name:Defines the region (e.g., spanning-tree config-name REGION1) to group switches.
Revision number:Ensures region consistency (e.g., spanning-tree config-revision 1).
These settings ensure switches form a single MSTP region, allowing VLAN-to-instance mappings (default instance 0 if not specified) and loop prevention. Other settings, like bridge priority or explicit instance creation, are optional and not strictly required for basic MSTP operation.
Relevance to Certification Objectives:
Network Resiliency and Virtualization (8%):Designing and troubleshooting MSTP for redundancy and fault tolerance.
Switching (19%):Implementing Layer 2 technologies like MSTP for loop prevention.
[References:, HPE Aruba Networking AOS-CX Configuration Guide: MSTP Configuration, detailing region and revision requirements., HPE7-A06Study Guide: Covers MSTP setup and best practices., HPE Aruba Networking Technical Documentation: Spanning Tree Protocols for AOS-CX., ]
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