Implementing Cisco ACI Advanced (DCACIA) — Question 58

How does Cisco ACI manage the STP BPDUs between two pods?

Answer options

• A. Cisco ACI spines perform ingress replication for STP BPDUs
• B. Cisco ACI spines suppress STP BPDUs to be forwarded to other pods
• C. BPDUs are forwarded over IPN using the bridge domain GIPo multicast address
• D. Special multicast group 239.255.255.255 is used to forward STP BPDUs

Correct answer: C

Explanation

The correct answer is C because in Cisco ACI, BPDUs are encapsulated and sent over the IPN using the GIPo multicast address to ensure proper communication between pods. Option A is incorrect as ingress replication is not the method used for STP BPDUs. Option B is wrong since STP BPDUs are not suppressed but forwarded. Option D is also incorrect because the specific multicast group used is the bridge domain GIPo, not the general multicast address.