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23.01.2022 What are the different types of vPC? Single Sided vPC --> In single-sided vPC, Access devices are connected to Nexus 7K series devices using vPC domain.... --> The access device which is attaching to vPC domain can be of any device such as Layer 2 Switch, Rack Mount Server, Blade Server, firewall, load balancer or any Network Attached Storage ( NAS) device. --> The only requirement for an Access device in order to connect to vPC is to support Port channel or Link Aggregation feature. The following are the Port-channel protocols supported by Nexus 7K for vPC: 1) LACP 2) Static --> It is recommended to configure LACP Protocol when forming vPC using access devices. Double-Sided vPC --> In Double-sided vPC, Access devices are connected to Nexus 5K series devices using vPC domain and these 5k Series devices are connected to 7K forming one more vPC for the L2/L3 default gateway. --> vPC domain at the bottom is used for active/active connectivity from endpoint devices to the network access layer. --> vPC domain at the top is used for active/active FHRP in the L2/L3 boundary aggregation layer. --> Double-Sided vPC provides higher bandwidth in the network compared to Single-Sided vPC. Multilayer vPC --> A dedicated layer of vPC domain (adjacent to aggregation layer which also runs vPC) is used to interconnect the 2 data centers together. --> Another design is to interconnect directly between vPC aggregation layer, without using any dedicated vPC layer for DCI --> vPC as DCI technology is intended to interconnect two data centers in maximum. --> Use vPC to interconnect a maximum of 2 data centers. Use OTV when more than 2 data centers need to be interconnected.
