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| Section | Objectives |
|---|---|
| Topic 1: Data Center and Virtualization Technologies | - VXLAN and overlay networks
|
| Topic 2: Network Automation and Programmability | - SDN and automation
|
| Topic 3: Enterprise Network Architecture | - Network design principles
|
| Topic 4: Network Security and QoS | - QoS mechanisms
|
| Topic 5: Routing and Switching Technologies | - IP routing protocols
|
| Topic 6: IPv6 and Advanced IP Technologies | - IPv6 deployment
|
| Topic 7: WAN and VPN Technologies | - MPLS fundamentals
|
>> Valid Huawei H12-891_V1.0 Exam Format <<
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NEW QUESTION # 312
An engineer uses two routers to perform IPv6 tests and wants to use OSPFv3 for IPv6 network connectivity.
Which of the following OSPFv3 configurations for R1 are correct?
Answer: A,D
Explanation:
OSPFv3 Configuration Principles:
OSPFv3, the OSPF version supporting IPv6, differs from OSPFv2 in several aspects:
Interface-based Configuration:
OSPFv3 is configured on interfaces directly, unlike OSPFv2 which uses the network command.
Router ID:
The Router ID is still a 32-bit number, typically represented as an IPv4 address.
It must be explicitly specified since OSPFv3 requires a Router ID for operation, even though it supports IPv6.
Analysis:
A). [R1-GigabitEthernet0/0/1] ospfv3 1 area 0:
Correct. This command enables OSPFv3 process 1 on the GE0/0/1 interface in Area 0.
B). [R1-ospfv3-1] router-id 10.1.1.1:
Correct. This correctly sets the Router ID for OSPFv3 process 1.
C). [R1-ospfv3-1-area-0.0.0.0] network 2001:DB8:2345:12::1 ::
Incorrect. OSPFv3 does not use the network command as in OSPFv2. Instead, OSPFv3 is directly configured on interfaces.
D). [R1] router id 10.1.1.1:
Incorrect. The Router ID should be set within the OSPFv3 process view, not the global configuration view.
Therefore, the correct answers are A and B.
Reference:
Huawei HCIE Datacom Official Certification Guide
Huawei OSPFv3 Configuration Guide
RFC 5340: OSPF for IPv6
NEW QUESTION # 313
Which of the following can be used to transmit traffic to a VXLAN network and implement intra-subnet communication on the same VXLAN network?
Answer: D
Explanation:
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.
Reference:
Huawei HCIE Datacom Official Certification Guide
Huawei VXLAN Configuration and Maintenance Guide
NEW QUESTION # 314
As shown in the figure, all routers declare the loopback address in OSPF where the R storage does not return address is 1022 [2 declares 10033[ at the Ael.R3 ring E port[ 92101102A External routing in order to win light R win L away from the negative cut.
The noodle command is as follows: (multi-select) [BIppprefixt permlt 1001.1.024 [R1] ospf1
Answer: A,B,D
NEW QUESTION # 315
Which of the following statements about BGP EVPN principles are correct in a scenario where a VXLAN tunnel is dynamically established through BGP EVPN?
Answer: A,B,D
Explanation:
BGP EVPN in VXLAN Tunneling
#A. MP_REACH_NLRI is used to carry routing information.
MP_REACH_NLRI (Multiprotocol Reachable Network Layer Reachability Information)is used inBGP updatesto carryVXLAN reachability information.
#B. Several BGP EVPN routes are defined through BGP extension.
BGP EVPN introduces multiple route types, such asType 2 (MAC/IP Advertisement), Type 3 (Inclusive Multicast), and Type 5 (IP Prefix Advertisement).
#D. MP_REACH_NLRI is used to carry the RT.
RT (Route Target) defines route import/export policies in VPN environments.
MP_REACH_NLRI carries the RT attributein BGP EVPN updates.
#Incorrect answer:
#C. MP_REACH_NLRI is used to carry the RD.
Wrong!TheRoute Distinguisher (RD)is carriedinside BGP attributes, but not in MP_REACH_NLRI.
Reference from Huawei HCIE-Datacom Documentation:
Huawei VXLAN BGP EVPN Configuration Guide - BGP EVPN Route Types
HCIE-Datacom Training Material - VXLAN Dynamic Tunnel Establishment
NEW QUESTION # 316
To enhance reliability, you can deploy Huawei iMaster NCE-WAN controllers in active/standby mode.
Which of the following IP addresses must be configured to be the same for the active and standby controllers so that the controllers can be accessed properly? (Select All that Apply)
Answer: B,C,D
Explanation:
In Huawei iMaster NCE-WAN controller active/standby deployment, to ensure seamless switchover and uninterrupted management and control channel communication, the following IPs must be configured consistently:
A). Southbound public IP addresses - Required for southbound communication from remote WAN devices via public networks.
C). Southbound private IP addresses - Used for devices accessing controllers over private links. Must remain unchanged between controllers.
D). Northbound IP addresses - For API and external system integration, ensuring upper-layer platforms don ' t need reconfiguration during switchover.
Internal interconnection addresses (B) are used for internal HA communication between controllers and do not need to be identical, hence not selected.
Exact Extract - Huawei HCIE-Datacom iMaster NCE-WAN Deployment Guide:
"To maintain service continuity, configure consistent southbound and northbound IP addresses across active and standby controllers. Internal interconnection addresses differ between nodes." Reference:
Huawei iMaster NCE-WAN Product Documentation
HCIE-Datacom Study Guide - SD-WAN Controller High Availability
NEW QUESTION # 317
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