Comprehensive and Detailed 200 to 250 words of Explanation From HCIP Datacom Campus Network documents knowledge without any URL or Links:

Authentication Header (AH) is one of the core IPsec security protocols and is designed to provideauthentication and integrity protectionfor IP packets. AH ensures that the received packet is from a legitimate sender and that the packet has not been altered during transmission.

AH supportsdata origin authenticationby verifying the identity of the sender using cryptographic algorithms. It also providesdata integrity checking, ensuring that packet contents are not modified in transit. Additionally, AH supportsanti-replay protectionby using sequence numbers to prevent attackers from capturing and retransmitting valid packets.

However, AHdoes not provide data encryption. All packet contents, including payload data, remain visible on the network. This limitation is inherent to the AH protocol design and is one of the main reasons ESP is more widely used in modern IPsec deployments.

According to HCIP Datacom Campus Network documentation, if confidentiality through encryption is required, ESP must be used instead of AH. Therefore, the function not supported by AH is data encryption, making option D the correct answer.

Comprehensive and Detailed 200 to 250 words of Explanation From HCIP Datacom Campus Network documents knowledge without any URL or Links:

In a VXLAN-based campus network,VBDIF interfacesserve as Layer 3 gateway interfaces for Bridge Domains (BDs) and provide routing capabilities. However, not all VXLAN gateways must maintain VBDIF interfaces. This makes statementA false.

ALayer 2 VXLAN gatewayoperates purely at Layer 2 and is responsible for VXLAN encapsulation and decapsulation, enabling intra-subnet communication within the same VXLAN network. It doesnot require a VBDIF interface, because no Layer 3 routing is involved. Therefore, claiming that both Layer 2 and Layer 3 VXLAN gateways must maintain VBDIF interfaces is incorrect.

Statement B is correct because a VBDIF interface is a logical Layer 3 interface bound to a BD and functions similarly to a VLANIF interface in traditional VLAN-based networks. Statement C is also correct, as aLayer 3 VXLAN gatewayenables inter-subnet routing between different VNIs and allows traffic to exit the VXLAN network toward non-VXLAN external networks. Statement D correctly describes the function of a Layer 2 VXLAN gateway.

According to HCIP Datacom Campus Network documentation, VBDIF interfaces are mandatory only for Layer 3 VXLAN gateways, not for Layer 2 VXLAN gateways.

Comprehensive and Detailed 200 to 250 words of Explanation From HCIP Datacom Campus Network documents knowledge without any URL or Links:

In the Huawei CloudCampus virtualized campus architecture, aVirtual Network (VN)is a logical service container used to isolate different types of services and user traffic. When a VN is created on iMaster NCE-Campus, it is internally mapped to aVPN instanceon network devices. This VPN instance provides traffic isolation at the control plane and forwarding plane levels.

Each VN has its own independent routing table and forwarding context, ensuring that traffic belonging to different services cannot interfere with each other unless explicitly permitted through policy. This mechanism is similar to traditional VPN technologies and is fundamental to service segmentation in VXLAN-based campus networks.

According to HCIP Datacom Campus Network documentation, creating a VN effectively achieves service isolation in the same way as creating a VPN instance. Therefore, the statement is TRUE.

Comprehensive and Detailed 200 to 250 words of Explanation From HCIP Datacom Campus Network documents knowledge without any URL or Links:

In Huawei iMaster NCE-Campus and CloudCampus management systems, different log types are designed to record different categories of events to support auditing, troubleshooting, and security analysis. When anMSP administrator creates a tenant account, this action is considered amanagement operationperformed through the system’s management interface.

Such administrative actions are recorded in theOperation Log. Operation logs documentuser-initiated configuration and management activities, including tenant creation, modification, deletion, policy changes, and administrative actions performed by operators or administrators. These logs are essential for operation auditing and responsibility tracing in multi-tenant environments.

System logsmainly record internal system events, such as service startup, module status changes, or system exceptions, and do not track administrator operations.Security logsfocus on security-related events, such as login failures, abnormal access attempts, or permission violations, rather than routine administrative operations.Device channel logsrecord communication events between devices and controllers, such as device registration or channel status changes, and are unrelated to tenant management actions.

According to HCIP Datacom Campus Network and CloudCampus O&M documentation, tenant account creation performed by an MSP administrator is clearly categorized as anoperation behavior, and therefore it is recorded in theOperation Log.

Comprehensive and Detailed 200 to 250 words of Explanation From HCIP Datacom Campus Network documents knowledge without any URL or Links:

Super VLAN is a Huawei campus network technology designed to solve broadcast domain and user isolation issues in large Layer 2 networks. It allows multiplesub-VLANsto be associated with a singleSuper VLAN, where the Super VLAN provides Layer 3 gateway services, and sub-VLANs remain Layer 2 isolated from each other. Users within different sub-VLANs cannot communicate directly at Layer 2, which effectively isolates users even though they share the same logical gateway.

This architecture significantly enhances user communication security by preventing direct Layer 2 attacks such as ARP spoofing or broadcast storms between users. In addition, broadcast packets generated within one sub-VLAN are confined to that sub-VLAN and do not propagate to others, preventing invalid or excessive broadcast traffic from impacting overall service quality.

Port isolation only isolates ports but does not provide centralized Layer 3 gateway management. IPSG focuses on IP address legitimacy enforcement rather than user isolation. Ethernet port security restricts MAC address access but does not control broadcast propagation or inter-user isolation across VLANs.

According to HCIP Datacom Campus Network design guidelines, Super VLAN is the correct technology for isolating users in the same VLAN scope while reducing broadcast impact and improving security, making option A correct.

Comprehensive and Detailed 200 to 250 words of Explanation From HCIP Datacom Campus Network documents knowledge without any URL or Links:

DHCP snooping works by distinguishing trusted and untrusted interfaces and controlling DHCP message forwarding behavior. After DHCP snooping is enabled, interfaces connected tolegal DHCP servers must be explicitly configured as trusted interfaces, otherwise DHCP server messages will be blocked. Therefore, statementB is correct.

On untrusted interfaces, the switchdrops DHCP server–type messages, such as DHCP Offer and DHCP ACK, to prevent rogue DHCP servers from assigning incorrect IP addresses. This validatesstatement C as correct.

Statement A is incorrect because DHCP snooping records client binding information mainly fromDHCP ACK messages, not from DHCP Offer messages. The ACK confirms the final IP assignment and lease parameters, making it the authoritative source for the binding table.

Statement D is also incorrect. When the interface connected to a DHCP client goes down, the corresponding DHCP snooping entry is immediately removed, rather than waiting for the lease to expire. This ensures real-time accuracy of the binding table.

The delivered configuration clearly indicates that aVPN instancenamedMKThas been created and bound to a VXLAN identifier. In Huawei virtualized campus networks that useVXLAN + BGP EVPN, aVN (Virtual Network)configured on iMaster NCE-Campus is typically instantiated on devices as anip vpn-instance. This VPN instance represents the logical tenant or virtual routing domain used for service isolation.

Several key lines confirm this mapping. The commandip vpn-instance MKTis the core object created for a VN. Theroute-distinguisher (RD)is configured to ensure route uniqueness for that VPN instance. The presence ofvpn-target import/export extcommunityandvpn-target … evpnshows that routes are controlled and exchanged using BGP extended communities, including EVPN-related RTs for VXLAN EVPN route import/export. This is exactly what iMaster NCE-Campus generates when a VN is created and needs to participate in EVPN route distribution.

Finally, vxlan vni 6 binds the VPN instance to a VNI, which is how VXLAN identifies and separates virtualized networks. Creating a fabric or external network would not directly generate an ip vpn-instance with RD/RTs and a VNI binding. Therefore, the administrator operation was to create a VN named MKT.