Huawei’s CloudFabric intelligent O&M solution, leveraging iMaster NCE-Fabric and FabricInsight,

uses the "1-3-5" principle (detect within 1 minute, locate within 3 minutes, rectify within 5 minutes)

to handle faults. This approach analyzes faults across multiple dimensions. Let’s evaluate each

option:

A . Device: This is supported. The solution monitors device-level metrics (e.g., CPU, memory) to

detect and locate faults. SUPPORTED.

B . Protocol: This is supported. Protocol issues (e.g., OSPF conflicts, BGP errors) are analyzed for fault

detection and resolution. SUPPORTED.

C . Service: This is supported. Service-level faults (e.g., tenant connectivity, VPC issues) are tracked

and addressed. SUPPORTED.

D . Application: This is not supported. The "1-3-5" troubleshooting focuses on network infrastructure

(devices, protocols, services, configurations), not application-layer issues, which are outside its

scope. NOT SUPPORTED.

E . Configuration: This is supported. Configuration errors (e.g., mismatched VNIs) are detected and

rectified as part of the process. SUPPORTED.

Thus, D (Application) is not a dimension supported by the "1-3-5" troubleshooting function.

Reference: Huawei CloudFabric Data Center Network Solution – Intelligent O&M; HCIP-Data Center

Network Training – Troubleshooting Dimensions.