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| Section | Objectives |
|---|---|
| IP Network Technologies | - IS-IS Routing Protocol
|
| MPLS and VPN Technologies | - MPLS Fundamentals
|
| Network Services and Optimization | - Multicast Technologies
|
| Network Design and Troubleshooting | - Enterprise Network Design
|
| Advanced Routing Protocols | - BGP Configuration and Policy Control
|
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NEW QUESTION # 124
On the network shown in the figure, IS-IS IPv6 runs on R2, R6, and R3, and the IPv6 address of Loopback0 on R6 is 2000::6/128. OSPFv3 runs on other links. Area 1 is a stub area, and area 2 is an NSSA. IS-IS routes are imported to OSPFv3 on R2 and R3. Which of the following statements are true?
Answer: A,B,D
Explanation:
# Explanation:
# Network Summary:
* IS-IS (IPv6) runs on: R2 # R3 # R6
* R6 owns Loopback0 = 2000::6/128
* OSPFv3 runs on: R1, R2, R3, R4, R5
* Area 1 = Stub (R4), Area 2 = NSSA (R5)
* Redistribution: IS-IS # OSPFv3 happens on R2 and R3
# Option A: R5 contains 2000::6/128
# True
* Area 2 is NSSA, and by default:
* External routes (like IS-IS) imported via import-route isis on R3 become Type-7 LSAs
* Then translated to Type-5 LSAs by R3 (ABR) for other areas.
* R5 will receive the translated route.
# Option B: R1 contains 2000::6/128
# True
* R2 and R3 redistribute the IS-IS IPv6 route into OSPFv3.
* R1 is in Area 0, directly connected to both R2 and R3.
* It receives the route as a normal OSPFv3 inter-area (Type-3) or external (Type-5) route.
# Option C: R6 contains ::/0 (default route)
# False
* R6 runs IS-IS Level-1 only.
* IS-IS Level-1 routers do not automatically get a default route.
* To get a default route in Level-1, the ABR must explicitly advertise it using:
pgsql
CopyEdit
isis default-route advertise always level-1
* No such configuration is mentioned # R6 does not receive ::/0 by default.
# Option D: R4 contains 2000::6/128
# True
* R4 is in Area 1 (Stub).
* Stub areas block Type-5 LSAs but allow Type-3 (inter-area) LSAs.
* Since IS-IS # OSPF redistribution occurs into backbone (Area 0), and R4 connects to it via R2 (ABR), R4 will receive the route via a Type-3 LSA.
# Final Answer: A, B, D
Official Huawei Extract:
" In OSPFv3, NSSA areas allow Type-7 LSAs, which are converted to Type-5 LSAs by the ABR. Stub areas block external LSAs but allow inter-area (Type-3) LSAs. IS-IS Level-1 routers require explicit default-route injection to receive ::/0. "
- [Huawei HCIA-Datacom Guide - IS-IS and OSPFv3 Redistribution and Area Behaviors]
NEW QUESTION # 125
In BGP/MPLS IP VPN, the OSPF multi-instance process uses the DN bit to prevent Type5 LSA loops.
Answer: A
NEW QUESTION # 126
(Connection question) Please match the command with the realized function.
Answer:
Explanation:
NEW QUESTION # 127
Part of the configuration of R1 is as follows. Which statement about IS-IS on R1 is correct?
3vpn-instarwce rr
level- 2
cost-style wide
-erntity 47.ccOa 3eft)btxlci-dael
Answer: A,C
NEW QUESTION # 128
In the preparation phase of a migration project, the software and hardware need to be checked. Match the operation objects in the preparation phase with the corresponding operation contents.
Answer:
Explanation:
Explanation:
Network cable # Use a tester to check connectivity.
Device version file # Check the size of the software package and check whether the file matches the device model.
Board # Install the board on a device that is not connected to the network and observe the running status of the device.
License # Check whether the license is in the validity period to prevent device functions from being affected.
Migration personnel list # Check whether responsibilities and permissions are clearly assigned.
Comprehensive and Detailed In-Depth Explanation:
1. Network Cable - Connectivity Testing:
* Before starting a migration project, all network cables should be tested for physical connectivity issues.
* Network testers can be used to detect any breaks, shorts, or incorrect wiring.
* Ensuring proper connectivity avoids delays and troubleshooting issues during the migration.
2. Device Version File - Software Compatibility Check:
* Firmware and software versions must be verified before upgrading or migrating network devices.
* The device version file should match the model and hardware specifications to avoid compatibility issues.
* If incorrect software is used, the device may not function properly or could become inoperable.
3. Board - Installation and Hardware Verification:
* Before installing new hardware modules (boards, line cards, etc.) into a production environment, they should be tested in isolation.
* Testing ensures the board is operational and does not introduce faults into the system.
* If a board is faulty, it can cause device failure or unexpected behavior in the migration.
4. License - Validity and Activation Check:
* Some network devices require licenses for full functionality (e.g., advanced routing, security features).
* If a license is expired or missing, critical functions may be disabled after migration.
* Checking license status in advance prevents unexpected downtime or service disruptions.
5. Migration Personnel List - Roles and Responsibilities Assignment:
* Large network migrations require clear responsibility assignments for each team member.
* A migration personnel list ensures that everyone knows their role, tasks, and permissions.
* Proper coordination avoids miscommunication, errors, and project delays.
Key Takeaways:
# Network cables should be tested for connectivity.# Software versions should match the hardware model to prevent incompatibility.# Hardware boards should be tested before installing into production.
# Licenses should be verified to prevent service disruptions.# Migration personnel roles should be clearly defined for smooth execution.
HCIP-Datacom-Advanced Routing & Switching Technology References:
* Huawei HCIP-Datacom Official Certification Guide, Chapter on Network Migration Best Practices
.
* Huawei Enterprise Networking Whitepapers, Guidelines on Software & Hardware Pre-checks for Migration.
* Huawei Technical Documentation, License Management in Huawei Datacom Devices.
NEW QUESTION # 129
......
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