CCIE Data Center (legacy) — Question 73

Virtual PortChannels (vPCs) allow links that are physically connected to two different Cisco switches to appear to a third downstream device as coming from a single device and as part of a single port channel. Which of the following are components of a Virtual PortChannel system? (Choose four)

Answer options

• A. Two peer devices: the vPC peers of which one is primary and one is secondary and are part of a vPC domain.
• B. A Layer 3 Gigabit Ethernet link called peer-keepalive link to resolve dual-active scenarios
• C. A redundant 10 Gigabit Ethernet PortChannel called a peer link to carry traffic from one system to the other when needed
• D. vPC member ports forming the PortChannel
• E. A dot1q trunk between the vPC peers
• F. A management port that can be used as peer-keepalive link to resolve dual-active scenarios.

Correct answer: A, B, C, D

Explanation

The correct answer includes components that are essential for the functioning of a vPC, such as the primary and secondary peers, the peer-keepalive link, the peer link, and the vPC member ports. Options E and F, while related to vPC functionality, do not constitute essential components of a vPC system, making them incorrect in this context.