300-620 · Question #354
Refer to the exhibit. An engineer migrates a legacy data center to a new Cisco ACI fabric. The new deployment must raise a fault if a Layer 2 loop is detected from the external networking devices…
The correct answer is D. Implement MCP PDU per VLAN on the legacy-facing interfaces. By default, Mis-Cabling Protocol (MCP) BPDUs are only sent in the native VLAN. To detect loops in the other VLANs carried across your legacy trunk, you must enable per-VLAN MCP so that an MCP PDU is transmitted in each VLAN on those interfaces; this raises the loop‐detection…
Question
Refer to the exhibit. An engineer migrates a legacy data center to a new Cisco ACI fabric. The new deployment must raise a fault if a Layer 2 loop is detected from the external networking devices. Due to the large number of workloads still running on the legacy network, the interconnection links must not be disabled. The engineer has already enabled the MCP globally. Which configuration completes the configuration?
Exhibit
Options
- ADisable Loop Protection Action on MCP global policy.
- BEnable MCP in the interconnection links.
- CConfigure MCP on all the legacy extended VLANs.
- DImplement MCP PDU per VLAN on the legacy-facing interfaces.
How the community answered
(29 responses)- A3% (1)
- B14% (4)
- C7% (2)
- D76% (22)
Explanation
By default, Mis-Cabling Protocol (MCP) BPDUs are only sent in the native VLAN. To detect loops in the other VLANs carried across your legacy trunk, you must enable per-VLAN MCP so that an MCP PDU is transmitted in each VLAN on those interfaces; this raises the loop‐detection fault without disabling the ports.
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