H12-891_V1.0 Exam Dumps : HCIE-Datacom V1.0

Dynamic VLAN Authorization in Huawei CloudCampus

Dynamic VLAN assignmentallows users to be placed into specific VLANsbased on authentication methods, ensuring security and network segmentation.

Correct Explanations:

✅A. Wired users using 802.1X authentication receive VLAN assignments dynamically.

After authentication,the access control system (e.g., iMaster NCE-Campus)assigns VLANs dynamically.

✅C. Wireless users using 802.1X authentication also receive VLAN assignments.

Similar to wired users,wireless 802.1X authentication allows dynamic VLAN assignmentvia the RADIUS server.

✅D. Wired users using MAC authentication can receive VLAN assignments.

If a userdoes not support 802.1X, MAC authentication can still be used to assign VLANs dynamically.

Incorrect Statement Explanation:

❌B. When wireless users pass Portal authentication, they join the authorization VLANs delivered to edge nodes.

Wrong!InPortal authentication, VLAN assignmentis not dynamically deliveredbecausePortal authentication typically applies access policies, not VLAN changes.

Dynamic VLAN assignment is mainly used with 802.1X or MAC authentication.

Reference from Huawei HCIE-Datacom Documentation:

Huawei CloudCampus Configuration Guide – Dynamic VLAN Assignment and Authentication

HCIE-Datacom Training Material – VLAN Authorization in Virtualized Campus Networks

Comprehensive and Detailed In-Depth Explanation:

Thefree mobility functionin iMaster NCE-Campus allows users to maintain consistent security policies regardless of their physical location within the campus network. To correctly implement this function, the administrator must:

A. Define security groups:Group users and devices based on roles or functions.

B. Deliver the inter-group policy:Apply policies that define how different security groups interact.

C. Deploy a policy control matrix:Establish a matrix that specifies theaccess control policiesbetween security groups.

D. Select the policy enforcement point:Choose devices or interfaces where policies are enforced, such as switches or routers.

All four steps are crucial for achieving dynamic policy enforcement in a virtualized and mobility-oriented campus network.

Comprehensive and Detailed In-Depth Explanation:

AnNVE (Network Virtualization Edge) interfaceis responsible for connecting physical or virtual devices to a VXLAN network. It functions as theVTEP (VXLAN Tunnel Endpoint)and supportsencapsulation and decapsulation of VXLAN packets.

Layer 2 VXLAN gateway (D)is used for intra-subnet communication, but theNVE interfaceis the actual point where traffic enters the VXLAN network.

Layer 3 VXLAN gateway (A)is used for inter-subnet communication.

VLANIF interface (C)is used for VLAN-based communication, not directly for VXLAN.

Therefore, theNVE interface (B)is the correct answer as it serves as thetraffic ingress and egress point for the VXLAN network.