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Exam 300-620 topic 1 question 188 discussion

Actual exam question from Cisco's 300-620
Question #: 188
Topic #: 1
[All 300-620 Questions]

Where are STP BPDUSs flooded in Cisco ACI fabric?

  • A. in the access encapsulation VLAN part of different VLAN pools
  • B. in the bridge domain VLAN
  • C. in the native VLAN ID
  • D. in the VNID that is assigned to the FD VLAN
Show Suggested Answer Hide Answer
Suggested Answer: D 🗳️
by frzzt at March 16, 2023, 10:29 a.m.

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Mr_Certifiable
6 months, 1 week ago
D - https://www.cisco.com/c/en/us/support/docs/cloud-systems-management/application-policy-infrastructure-controller-apic/211236-ACI-operation-with-L2-switches-and-Spann.pdf
upvoted 1 times
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imanus
6 months, 3 weeks ago
FD vlan = Front Pannel vlan https://community.cisco.com/t5/application-centric-infrastructure/internal-vlan-vs-front-panel-fd-vlan-what-s-the-difference/td-p/3824539
upvoted 1 times
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Gruiarew
7 months, 3 weeks ago
Selected Answer: D
ACI floods STP Bridge Protocol Data Units (BPDUs) to the VXLAN network identifier (VNID) assigned to the FD VLAN (VNID is assigned through the VLAN pool so encapsulation has to be part of same VLAN pool to be in part of same STP domain). So in effect, it operates as an Ethernet hub when it comes to Spanning Tree. When external L2 switches are connected to an ACI leaf, they default to full-duplex operation. In the STP world, this equates to a P2P link type https://www.cisco.com/c/en/us/support/docs/cloud-systems-management/application-policy-infrastructure-controller-apic/211236-ACI-operation-with-L2-switches-and-Spann.pdf
upvoted 1 times
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frzzt
8 months, 3 weeks ago
Selected Answer: D
D is correct. ACI floods STP Bridge Protocol Data Units (BPDUs) to the VXLAN network identifier (VNID) assigned to the FD VLAN (VNID is assigned through the VLAN pool so encapsulation has to be part of same VLAN pool to be in part of same STP domain). So in effect, it operates as an Ethernet hub when it comes to Spanning Tree. When external L2 switches are connected to an ACI leaf, they default to full-duplex operation. In the STP world, this equates to a P2P link type.
upvoted 3 times
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