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Question 93 - H12-891 discussion

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The following description of the LDPLSP establishment process is correct?

A.
By default, LSRs are for the same FEC, and the received tag mappings can only come from the optimal next hop, not from the non-optimal next hop.
Answers
A.
By default, LSRs are for the same FEC, and the received tag mappings can only come from the optimal next hop, not from the non-optimal next hop.
B.
When a network topology change causes the next hop neighbor to change, the free label keep method is used. LSR can quickly rebuild the LSP by directly using the labels sent by the original nonoptimal next-hop neighbor. Liberal needs more memory and tag space.
Answers
B.
When a network topology change causes the next hop neighbor to change, the free label keep method is used. LSR can quickly rebuild the LSP by directly using the labels sent by the original nonoptimal next-hop neighbor. Liberal needs more memory and tag space.
C.
In the DoD mode of label publishing, for a specific FEC, the LSR does not need to obtain a label request message from upstream to distribute the label.
Answers
C.
In the DoD mode of label publishing, for a specific FEC, the LSR does not need to obtain a label request message from upstream to distribute the label.
D.
The process of establishing a D. LSP is actually to bind the FEC to the tag and advertise this binding to the LSP upstream LSR process.
Answers
D.
The process of establishing a D. LSP is actually to bind the FEC to the tag and advertise this binding to the LSP upstream LSR process.
Suggested answer: B, D
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asked 18/09/2024
Alexey Chernikov
32 questions
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