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Huawei H12-831_V1.0 exam is an advanced level certification that tests the knowledge and skills of IT professionals in the area of Datacom-Advanced Routing and Switching Technology. H12-831_V1.0-ENU Exam covers a wide range of topics related to the field and is designed to ensure that candidates can apply their knowledge in real-world situations. The HCIP-Datacom-Advanced Routing and Switching Technology V1.0 certification is highly valued in the IT industry and is proof of a candidate's expertise in the field.
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The Huawei H12-831_V1.0-ENU course also covers the implementation of MPLS VPN, where candidates will learn about the different VPN types, label assignment processes, and VPN traffic routing. H12-831_V1.0-ENU course also includes lectures on network security implementation, focusing on access control lists and securing data communications. Candidates will learn how to apply access control lists to set network security policies that block and permit specific network traffic.
NEW QUESTION # 198
IEIF expands the functions of OSPF by taking advantage of the strong expansibility of OSPF. To enable it to support IPv6 networks, the expanded protocol is called OSPFv3. OSPFv3 is compatible with OSPFv2.
Answer: B
NEW QUESTION # 199
In the OSPF network shown in the figure, the link cost value has been marked in the figure. R1 enables OSPF IP FRR. The main path for R1 to reach 10.0.3.3/32 is R1-R2-R3, and the backup path is R1-R4-R2-R3.
Answer: B
NEW QUESTION # 200
There is the concept of forwarding equivalence class FEC in MPLS. The following description is wrong:
Answer: A,B
Explanation:
VPNEqual to any combination of division basis
NEW QUESTION # 201
What are the wrong statements about OSPF's Router LSA and Network LSA?
Answer: A,C
NEW QUESTION # 202
In the hub-spoke networking shown in the figure, which of the following commands must be configured on the Hub-PE to ensure correct route transmission?
Answer: A
Explanation:
Comprehensive and Detailed In-Depth Explanation:
1. Understanding the Hub-Spoke Network Model in MPLS VPN
* Hub-Spoke (or Route Reflector) topology is used in MPLS Layer 3 VPNs where multiple spoke sites communicate through a central hub.
* The Hub-PE acts as an intermediate BGP speaker and redistributes routes between spokes.
* The challenge is preventing routing loops when exchanging routes between spokes.
2. Understanding the Role of Site of Origin (SoO) in BGP/MPLS VPNs
* BGP Site of Origin (SoO) is a route attribute used to prevent routing loops in scenarios where a hub redistributes routes between spokes.
* If a route originating from a spoke is advertised back to the same site, SoO prevents it from being re-learned.
* The SoO value (e.g., 200:1) ensures that a site does not accept its own previously advertised prefixes.
3. Analyzing the Answer Choices
# A. [Hub-PE-bgp-VPN_out] peer x.x.x.x allow-as-loop (Incorrect)
* The allow-as-loop command allows BGP to accept routes with its own AS number in the AS path.
* This is NOT needed in a Hub-Spoke VPN because BGP routes are not being looped through the same AS.
# This is unnecessary for preventing loops in a Hub-Spoke VPN.
# B. [Hub-PE-bgp-VPN_in] peer x.x.x.x allow-as-loop (Incorrect)
* Again, allow-as-loop is used when a router needs to accept its own AS number in the BGP AS path.
* This is NOT the mechanism used for preventing loops in Hub-Spoke VPNs; SoO is used instead.
# This is not required in this scenario.
# C. [Hub-PE-bgp-VPN_in] peer x.x.x.x soo 200:1 (Correct Answer)
* The correct way to prevent spoke routes from looping through the hub is to apply the Site of Origin (SoO) attribute.
* This command ensures that if a route with SoO 200:1 is received, it is not advertised back to the same spoke.
# This is the correct answer.
# D. [Hub-PE-bgp-VPN_out] peer x.x.x.x soo 200:1 (Incorrect)
* Applying SoO on outgoing routes is NOT effective because the hub should mark received routes and prevent loops when re-advertising them.
* SoO should be applied on the inbound (received) routes at the Hub-PE, not outbound.
# This is not the correct implementation of SoO.
Final Conclusion:
# Correct answer: C. [Hub-PE-bgp-VPN_in] peer x.x.x.x soo 200:1
# A. allow-as-loop is unnecessary in a Hub-Spoke MPLS VPN.
# B. allow-as-loop is not relevant here.
# D. SoO should be applied inbound, not outbound.
Thus, the correct answer is: C. [Hub-PE-bgp-VPN_in] peer x.x.x.x soo 200:1 .
Reference:
HCIP-Datacom-Advanced Routing & Switching Technology V1.0 - MPLS VPN Hub-Spoke Design and SoO Configuration Huawei Official HCIP-Datacom Study Guide - Route Loop Prevention in Hub-Spoke VPNs Huawei Documentation on Site of Origin (SoO) in MPLS VPN
NEW QUESTION # 203
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2026 Latest TrainingDumps H12-831_V1.0-ENU PDF Dumps and H12-831_V1.0-ENU Exam Engine Free Share: https://drive.google.com/open?id=1aLwyUWIjeyCbhCufTbbIfyToF273PNlK