You are setting up an ACI spine-leaf architecture and interconnecting the spine switches with the leaf switches.
Which description of what happens after initial setup to activate these interlinks is true?
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A. B. C. D.A.
ACI (Application Centric Infrastructure) is a software-defined networking (SDN) architecture that provides a centralized policy-driven approach to managing network infrastructure. In an ACI spine-leaf architecture, the spine switches provide the connectivity between the leaf switches, which in turn connect to the endpoints (servers, storage, etc.). When setting up the interlinks between the spine and leaf switches, it is important to ensure that the links are properly configured to provide optimal performance and reliability.
Answer A: An overlay is created automatically, which creates a setup where the uplinks do not need to be managed manually.
This answer is incorrect. While ACI does use overlays to provide network connectivity, the creation of an overlay does not happen automatically when setting up interlinks between spine and leaf switches. Additionally, uplinks still need to be managed manually, regardless of whether an overlay is in use or not.
Answer B: The links are creating a Layer 3 network, and all links must be configured as point-to-point links.
This answer is also incorrect. While it is true that ACI uses a Layer 3 fabric to provide network connectivity, the interlinks between the spine and leaf switches are Layer 2 connections. Additionally, while it is best practice to configure interlinks as point-to-point links, this is not a strict requirement.
Answer C: The interlinks are Layer 2 connections and only the allowed VLAN list must be added.
This answer is partially correct. The interlinks between spine and leaf switches are indeed Layer 2 connections, and it is important to configure the allowed VLAN list to ensure that only the appropriate traffic is forwarded between switches.
Answer D: Fabric Path must be configured on the interlinks.
This answer is incorrect. Fabric Path is a proprietary protocol developed by Cisco that is used to provide Layer 2 connectivity over a Layer 3 fabric. While Fabric Path can be used in an ACI environment, it is not a strict requirement for configuring interlinks between spine and leaf switches.
In summary, the correct answer is C: The interlinks are Layer 2 connections and only the allowed VLAN list must be added. It is important to configure the allowed VLAN list on interlinks to ensure that only the appropriate traffic is forwarded between switches. While configuring interlinks as point-to-point links is best practice, it is not a strict requirement.