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Ericsson Exam ECP-206 Topic 1 Question 12 Discussion

Actual exam question for Ericsson's ECP-206 exam
Question #: 12
Topic #: 1
[All ECP-206 Questions]

Which two statements are true regarding the LSP? (Choose two.)

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Suggested Answer: B, C

Two statements that are true regarding the LSP are:

The LSP refers to a sequence of routers that forward the MPLS packet based on labels. An LSP is a Label Switched Path, which is a path through an MPLS network that is established by signaling protocols such as LDP or RSVP-TE. An LSP consists of a sequence of routers (called Label Switching Routers or LSRs) that forward packets based on labels rather than IP addresses. Labels are short fixed-length identifiers that are attached to packets at the ingress router and removed at the egress router.Labels can be swapped or popped at intermediate routers according to their label forwarding tables78.

The LSP refers to a sequence of routers that add, remove, or change label values along the path. As mentioned above, an LSP consists of a sequence of routers that forward packets based on labels. Along the path, different routers may perform different operations on the labels depending on their role and configuration. The ingress router adds one or more labels to the packet before sending it into the MPLS network. The egress router removes all labels from the packet before sending it out of the MPLS network. The intermediate routers may swap one label with another label according to their label forwarding tables.This process is called label switching78.


by Justine at Mar 08, 2024, 04:37 PM

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Cyndy
6 months ago
Hmm, I see your point Annamae. So it could be both A and B that are true about the LSP.
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Annamae
6 months ago
I disagree. I think option B is correct. The LSP is a sequence of routers that add, remove, or change label values along the path.
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Rasheeda
6 months ago
That makes sense, Tom. So the LSP is not just about assigning labels, but also about forwarding based on them.
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Tom
6 months ago
I believe option C is also true. The LSP involves routers forwarding packets based on labels.
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Cyndy
6 months ago
I agree with Rasheeda, option A seems correct. But what about the other options?
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Rasheeda
6 months ago
I think option A is true because the LSP is a specific label assigned by the LSR.
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Madonna
6 months ago
Yeah, options A and B make sense based on how MPLS works.
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Lynsey
7 months ago
I agree with that, so it seems like options A and B are the correct statements about the LSP.
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Rolland
7 months ago
I think option B is true because the LSP does involve a sequence of routers that handle labels.
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Reyes
7 months ago
I disagree with option D, the LSP is not based on destination MAC address.
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Charlena
7 months ago
I agree with that, and I also think option C is true because the LSP is about forwarding packets based on labels.
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Sabra
7 months ago
I think option A is true because the LSP does refer to a specific label assigned to a packet.
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