Which two functions are enabled when you set up vPC+ at the FabricPath edge? (Choose two.)
A. the ability to attach Cisco Fabric Extenders in FEX active/active mode
B. the ability to stop all Layer 3 egress traffic
C. the ability to attach servers to edge switches with port-channel teaming
D. the ability to attach additional Classic Ethernet switches in vPC+ mode
The virtual port channel (vPC) feature was introduced on the Cisco Nexus 5000 Series platforms to provide two active paths, to eliminate the need to run the STP protocol, and to have Active-Active redundancy. vPCs are mainly used for servers that can do port channeling as well as connect to Cisco Nexus 2000 Fabric Extenders. vPCs are deployed in the CE domain. When you migrate to a FabricPath network, devices evolve from a vPC to a vPC+ design.
The vPC+ feature was introduced to allow interoperability between FabricPath and vPCs. The functionality and behavior of a vPC+ and a vPC is identical. The same rules apply in both technologies. That is, both require peer link and peer keepalive messages, the configurations must match between the vPC peers, and consistency checks still take place. In a vPC+ domain, a unique FabricPath switch ID is configured and the peer link is configured as a FabricPath core port. This FabricPath switch ID under the vPC+ domain is called the Emulated switch ID. The Emulated switch ID must be the same between the two peers and must be unique per vPC+.
The benefits of using a vPC+ at the edge of a domain are as follows:
•Allows you to attach other CE devices in vPC mode
•Allows you to attach Cisco Nexus 2000 Fabric Extenders in Active/Active mode
https://www.cisco.com/en/US/docs/switches/datacenter/nexus5000/sw/mkt_ops_guides/513_n1_1/n5k_ops_fabricpath.html#wp1053135