What are two advantages of using Cisco vPC over traditional access layer designs? (Choose two.)
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A. B. C. D. E.CD.
https://www.cisco.com/c/dam/en/us/td/docs/switches/datacenter/sw/design/vpc_design/vpc_best_practices_design_guide.pdfCisco vPC (Virtual Port Channel) is a technology that allows for the creation of a single logical port channel from two physical switches, which can be used to connect servers or other network devices. Compared to traditional access layer designs, there are several advantages to using vPC:
No Spanning-Tree Blocked Ports: In traditional access layer designs, Spanning-Tree Protocol (STP) is used to prevent loops in the network. However, STP can also block some ports, which can reduce the available bandwidth in the network. With vPC, there are no blocked ports, so all available uplink bandwidth can be used.
Uses all available uplink bandwidth: In traditional access layer designs, the uplink bandwidth is limited by the capacity of a single switch. With vPC, uplink bandwidth can be increased by combining the capacity of both switches in the vPC domain, allowing for higher levels of redundancy and resiliency.
Maintains Single Control Plane: With vPC, both switches in the vPC domain are managed as a single logical entity, which simplifies management and reduces the risk of configuration errors. This also means that traffic flows are not affected by the loss of a single switch in the vPC domain.
Therefore, options C and D are the correct answers to the question. Option C states that there are no Spanning-Tree blocked ports with vPC, and option D states that vPC uses all available uplink bandwidth. Options A, B, and E are incorrect because vPC supports Layer 2 port channels instead of Layer 3 port channels, does not disable Spanning-Tree protocol, and does not maintain a single control plane for Layer 3 routing.