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Exam 300-620 topic 1 question 38 discussion

Actual exam question from Cisco's 300-620
Question #: 38
Topic #: 1
[All 300-620 Questions]

Which action sets Layer 2 loop migration in an ACI Fabric with a Layer 2 Out configured?

  • A. Enable MCP on the ACI fabric.
  • B. Disable STP in the external network.
  • C. Disable STP on the ACI fabric.
  • D. Enable STP on the ACI fabric.
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Suggested Answer: A 🗳️
by villain_jack at March 25, 2022, 2 p.m.

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designated
7 months, 1 week ago
Selected Answer: A
A is correct MisCabling Protocol (MCP) detects loops from external sources (such as misbehaving servers and external networking equipment running STP) and will err-disable the interface on which Cisco ACI receives its own packet. The best practice is to enable this option (potentially also with "Enable MCP PDU per VLAN") on leaf node ports that are connected to external Layer 2 networks that may introduce loops.
upvoted 1 times
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Marinheiro
1 year, 1 month ago
It's loop mitigation, not "migration".
upvoted 2 times
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villain_jack
3 years, 2 months ago
A is correct https://www.cisco.com/c/en/us/td/docs/dcn/whitepapers/cisco-aci-best-practices-quick-summary.html#_Toc97911120
upvoted 4 times
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C (25%)
B (20%)
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