Exam JN0-680 Topic 6 Question 8 Discussion

Actual exam question for Juniper's JN0-680 exam
Question #: 8
Topic #: 6

Referring to the exhibit, R1 and R2 are QFX5100 Series devices acting as VXLAN Layer 2
Gateways using PIM-SM signaling for the same VXLAN segment (VNI 5100). The multicast group assigned to VNI 5100 is 239.0.0.1. R1 currently has an entry in its MAC table for
Host B.
In this scenario. how will R1 react to receiving the Ethernet frame from Host A?

Suggested Answer: A Vote an answer

Host A and B are on the same subnet, so communicating at Layer 2 - MAC to MAC. The
Layer 3 information is for VXLAN mapping to multicast groups - so the destination address is 239.0.0.1 group, and the tree is source-based (R1 has (10.1.1.1,239.0.0.1) in its multicast table). Assumption here the question infers Host A is sending a frame to Host B.
Question poorly worded.

by Xanthe at Dec 17, 2025, 09:11 PM

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