Huawei Exam H31-161 Topic 2 Question 88 Discussion

Actual exam question for Huawei's H31-161 exam

Question #: 88
Topic #: 2

Which of the following statements about the working principle of LDP FRR are true?

AAfter LDP FRR is enabled, a backup LSP is generated. Both the primary and backup LSPs are stored in the forwarding table.

BLDP FRR can be deployed on the ingress node and the intermediate node.The primary and backup LSPs are recorded in the ILM table on the intermediate node and in the FIB table on the ingress node.

CMultiple LSPs can be backed up on the ingress node, that is, entries about multiple backup LSPs are generated in the forwarding table according to the priority of the LDR FRR, implementing multilayer protection.

DAfter LDP FRR is enabled, a backup LSP can be generated for a primary LSP to prevent serious packet loss during fast flapping of the primary LSP

Show Suggested Answer

Suggested Answer: A, B

by Mona at May 20, 2024, 09:16 AM

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Chaya

7 months ago

Haha, I hope the exam doesn't ask us to configure LDP FRR on our routers. That would be a nightmare!

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Sheron

7 months ago

I agree with Alease. The key purpose of LDP FRR is to provide fast recovery in case the primary LSP flaps.

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Ressie

7 months ago

I'm a bit confused about B and C. Does LDP FRR really work on both ingress and intermediate nodes? And can it back up multiple LSPs? This needs some clarification.

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7 months ago

I think A and D are correct.

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