CCIE Data Center (legacy) — Question 48

Which goal of peer-gateway in vPC is true?

Answer options

• A. Use the same bridge ID when sending BPDUs from switches in a vPC pair.
• B. Configure the MAC address of the vPC peer as a gateway MAC.
• C. Transmit BPDUs from the secondary and primary vPC switch.
• D. Act as a single router when peering dynamic routing protocols over a vPC.

Correct answer: D

Explanation

The correct answer is D because the peer-gateway feature allows the vPC to present a single logical router to dynamic routing protocols, simplifying network management. Options A and B are incorrect as they describe configurations that do not directly relate to the peer-gateway function, and option C is misleading since BPDUs are typically sent from the primary switch only in a properly configured vPC.