In the computing scenario of Huawei CloudFabric Solution, which of the following services are optional for controller interconnection? (Select All that Apply)

In Huawei's CloudFabric Solution, the core components for a functional automated fabric in a computing scenario are the controller (iMaster NCE-Fabric) and its interconnection with the Virtual Machine Manager (VMM). Interconnection with FabricInsight (for advanced analytics) and eSight (for managing non-fabric or legacy devices) are value-added services that enhance O&M capabilities but are not mandatory for the fabric's basic operation. Therefore, they are considered optional interconnections.

B. Interconnection with an authentication server (e.g., RADIUS/HWTACACS) is a fundamental security requirement for controlling access to network devices and is not considered optional in a production environment.
D. Interconnection with the VMM (e.g., VMware vCenter, OpenStack) is essential in a computing scenario to enable the automated provisioning and management of network resources for virtual machines, which is a primary goal of the solution.

1. Huawei CloudFabric Data Center Network Solution Description, Section: "Solution Architecture". The architecture diagram clearly shows iMaster NCE-Fabric as the core controller, with VMM integration as a key element for virtualization scenarios. FabricInsight and eSight are depicted as optional, integrated O&M components.

2. Huawei iMaster NCE-Fabric Product Documentation, "Product Description", Section: "Application Scenarios". This section details how NCE-Fabric integrates with VMMs to automate network service provisioning for virtualized workloads, highlighting this as a core function. It also describes integration with FabricInsight as an enhancement for intelligent O&M.