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| Section | Objectives |
|---|---|
| Topic 1: MPLS and VPN Technologies | - VPN Implementation
|
| Topic 2: Network Services and Optimization | - Multicast Technologies
|
| Topic 3: IP Network Technologies | - IS-IS Routing Protocol
|
| Topic 4: Advanced Routing Protocols | - OSPF Advanced Features
|
| Topic 5: Network Design and Troubleshooting | - Fault Diagnosis
|
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Our to-the-point and trustworthy Huawei HCIP-Datacom-Advanced Routing & Switching Technology V1.0 Exam Questions in three formats for the HCIP-Datacom-Advanced Routing & Switching Technology V1.0 (H12-831_V1.0) certification exam will surely assist you to qualify for Huawei H12-831_V1.0 certification. Do not underestimate the value of our Huawei H12-831_V1.0 Exam Dumps because it is the make-or-break point of your career. Therefore, make the most of this opportunity of getting these superb exam questions for the Financials in Huawei H12-831_V1.0 certification exam.
NEW QUESTION # 145
The deployment of port isolation technology in Ethernet can realize Layer 2 intercommunication and Layer 3 isolation, making the network more flexible.
Answer: B
NEW QUESTION # 146
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: D
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.
NEW QUESTION # 147
Assuming that the neighbor relationship between BGP routers has been established successfully, the configuration on R1 is shown in the figure. ask for R1 Which router can the route entry 10.10.10.0/24 be delivered to the farthest?
AS 200
bgp 100
peer 13.X3 as-number 300
peer B3.33 connect * interface LoopBackO peer 3.33.3 route-policy COMMUNITY eporx peer 3333 next >hop-local peer Xl.3.3 advertise-cofnmunity network 10.10.T0.0 24 route
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