Huawei Updated H12-841_V1.5 Exam Questions and Answers by bryony

Comprehensive and Detailed Explanation (200–250 words):

In this scenario,distributed VXLAN gatewaysare deployed, andlocal ARP proxyis enabled onVBDIF 10 of SW1. PC1 (172.16.1.1/24) needs to communicate with PC2 (172.16.1.2/24), which is located behind aremote distributed gateway (SW3).

Witharp-proxy local enable, SW1 doesnot flood ARP requests across the VXLAN tunnel. Instead, SW1 responds locally to PC1’s ARP request using theMAC address of its own VBDIF interface. Therefore, PC1 learns172.16.1.2 mapped to MAC D, which is the MAC address ofVBDIF 10 on SW1, not MAC B (the actual MAC of PC2). This makesstatement C trueandstatement A false.

Once PC1 sends traffic to PC2, the destination MAC in the frame isMAC D, meaning the packet is delivered to thelocal Layer 3 gateway. SW1 then performsLayer 3 routing, not Layer 2 switching. SW1 looks up theLayer 3 forwarding table, determines the remote VTEP, encapsulates the packet into VXLAN, and forwards it across the VXLAN tunnel. Therefore,statement D is true, whilestatement B is false.

This behavior aligns with HCIP Datacom Campus Network documentation fordistributed gateways with ARP proxy enabled, where traffic is routed locally and optimized across the VXLAN fabric.

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

IKEv1 negotiation consists of two phases.Phase 1is responsible for establishing a secure IKE Security Association (SA), including peer authentication, key exchange, and protection of subsequent negotiations. In Huawei IPsec implementations, IKEv1 Phase 1 supportsMain modeandAggressive mode.

Main modeuses six message exchanges to securely negotiate parameters, protect identity information, and establish a trusted channel. It provides higher security and is commonly used in site-to-site IPsec VPN scenarios.Aggressive mode, on the other hand, completes negotiation using only three message exchanges, offering faster setup at the cost of reduced identity protection.

Quick modeis not part of IKEv1 Phase 1; it is used inPhase 2to negotiate IPsec SAs for data traffic protection.Normal modeis not a valid IKEv1 negotiation mode.

According to HCIP Datacom Campus Network documentation and standard IPsec principles, the supported IKEv1 Phase 1 negotiation modes areMain mode and Aggressive mode, makingoptions B and Ccorrect.

Explanation (Concise and Technical)

Position 1 → 100This corresponds toVNI 100, which is associated with BD10 and is used for communication between PC1 and PC3.

Position 2 → 3.3.3.3This is theremote VTEP IP addressof VTEP3, configured as a head-end peer for VNI 100 on VTEP1.

Position 3 → 200This representsVNI 200, which is bound to BD20 and enables VXLAN communication between PC2 and PC4.

Position 4 → 1.1.1.1This is theremote VTEP IP addressof VTEP1, configured as a head-end peer for VNI 200 on VTEP2.

This mapping follows standardstatic VXLAN tunnel configuration logicon Huawei devices, where each VNI is explicitly associated with remote VTEP peer addresses using head-end peer-list.

In campus network architecture, theegress zoneplays a critical role as the boundary between the internal campus network and external networks such as the Internet, WAN, or cloud services. According to HCIP Datacom Campus Network design principles, the egress zone must meet multiple functional and security requirements to ensure stable, secure, and flexible network operation.

First,network connectivityis a fundamental requirement. The egress zone must reliably connect the campus intranet to external networks, ensuring uninterrupted access to external resources and services. High availability and redundancy are often considered in this aspect to avoid single points of failure.

Second,network secure ensuranceis essential. As the main security boundary, the egress zone must protect the campus network from external threats. This typically involves deploying security mechanisms such as firewalls, intrusion prevention, traffic filtering, and attack defense to ensure data and service security.

Third, the egress zone must provide strongservice control capability. This includes traffic identification, policy-based forwarding, bandwidth management, and application control. These capabilities allow administrators to optimize service quality, prioritize critical applications, and manage user access to external services.

Finally,various and flexible access modesare required to support different external connection scenarios, such as Internet access, MPLS WAN access, VPN connections, and cloud interconnection. This flexibility enables the campus network to adapt to evolving business and service requirements.

Therefore, all listed options are essential requirements for proper egress zone design, makingA, B, C, and Dthe correct answers.