Cisco CCNP Data Center 300-620 Question # 67 Topic 7 Discussion
300-620 Exam Topic 7 Question 67 Discussion:
Question #: 67
Topic #: 7
Refer to the exhibit, An engineer is deploying a Cisco ACI environment but experiences a STP loop between switch1 and switch2. Which configuration step is needed to break the STP loop?
A.
Configure the STP instance to VLAN mapping under the switch STP policy.
B.
Configure a Layer 2 external bridged network on the interfaces facing the MST switches.
C.
Enable the native VLAN on the interfaces facing the MST switches using static pons in a dedicated EPG.
D.
Enable BPDU filter under the STP interface policy on the Interfaces lacing the MST switches.
To break the STP loop between switch1 and switch2 in a Cisco ACI environment, enabling BPDU filtering on the interfaces facing the MST (Multiple Spanning Tree) switches is the necessary step. BPDU filtering prevents BPDUs from being sent or received through a port, which effectively stops the STP process on those ports and breaks the loop1.
When BPDU filtering is enabled on an interface, the switch does not send any BPDUs and ignores any BPDUs it receives on that interface. This can be used to prevent unwanted STP negotiations on ports where loops are not expected to happen or where STP is not desired1.
References :=
Use of ACI Operation with L2 Switches and Spanning Tree Link Types - Cisco1
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