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Exam 300-630 topic 1 question 91 discussion

Actual exam question from Cisco's 300-630
Question #: 91
Topic #: 1
[All 300-630 Questions]



Refer to the exhibit. Which method does Cisco ACI fabric use to forward L2 Unknown Unicast packets?

  • A. The source leaf sends the traffic to all ports in BD.
  • B. Packets are dropped if dMAC is absent in COOP.
  • C. The traffic is flooded using VRF Outer Multicast Group ID.
  • D. Traffic is flooded to all Layer 2 ports of ACI fabric.
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Suggested Answer: B 🗳️
by 49769b4 at May 15, 2024, 6:44 p.m.

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Brand
5 days, 15 hours ago
Selected Answer: A
The L2 Unknown Unicast is set to Flood. So the L2 Unkown Unicast traffic is going to be flooded within the BD. Multi Destination Flooding is for Broadcast and Multicast traffic, it's not related to L2 Unknown Unicast at all.
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49769b4
7 months ago
Think it's C based on the ACI L2 Config guide "When operating in flood mode, Layer 2 unknown unicast traffic is flooded over the multicast tree of the bridge domain (GIPo)"
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