Exam 300-510 topic 1 question 114 discussion

Actual exam question from Cisco's 300-510

Question #: 114
Topic #: 1

Refer to the exhibits. A network operator is troubleshooting packet loss seen from the R1 loopback interface to the R2 loopback interface over the core network. The operator is attempting to identify the next leg in the path from PE1. Which interface and label path should the operator investigate next?

A. PE1 – Gi0/0/0/2 – forwarding label 24001
B. PE1 – Gi0/0/0/3 – forwarding label 24002
C. PE1 – Gi0/0/0/2 – forwarding label 24002
D. PE1 – Gi0/0/0/3 – forwarding label 24001

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Suggested Answer: B 🗳️

by DUsoo at Nov. 6, 2023, 10:16 a.m.

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Storcaks

10 months ago

Selected Answer: B

R2's Loopback 10.2.2.2/32 is a bgp prefix that PE1 has learned from PE2 via iBGP. LDP doesn't allocate labels for bgp prefixes. For PE1 to reach 10.2.2.2/32, it needs to reach the next hop of 10.0.0.33, which is the transit network 10.0.0.32/30 between PE2 and R2, which it has an LDP label for (24002). 7045024 bytes switched for prefix 10.0.0.32/30 indicate that only gi0/0/0/3 is used for forwarding, not gi0/0/0/2. Correct answer should be B.

upvoted 3 times

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DUsoo

1 year ago

Do we know why???

upvoted 1 times

thejag

10 months, 3 weeks ago

I don't get it either!?

upvoted 1 times

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Exam 300-510 topic 1 question 114 discussion

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Storcaks

DUsoo

thejag

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