VPC member port: A port that is assigned to a vPC channel group. The system cannot bring up the vPC peer-link unless the peer-keepalive link is already up and running. If other traffic is also allowed, it could overload the link during failures. The peer-link should only allow traffic that is part of the vPC domain. Higher-bandwidth interfaces (such as 25-Gigabit Ethernet, 40-Gigabit Ethernet, 100-Gigabit Ethernet, and so on) may also be used to form the port channel. The vPC peer-link is a port channel and should consist of at least two dedicated 10-Gigabit Ethernet links terminated on two different I/O modules, if at all possible, for high availability. VPC peer-link: The vPC peer-link carries essential vPC traffic between the vPC peer switches and is used to synchronize state between the vPC peer devices. No data or synchronization traffic moves over the vPC peer-keepalive link the only traffic on this link is a message that indicates that the originating switch is operating and running a vPC. Do not use Ethernet crossover cables to connect the management ports on the vPC peers to each other back-to-back because the peer-keepalive link will fail on supervisor switchover. However, if you use the management interfaces for the peer-keepalive link, you must put a management switch connected to both the active and standby management ports on each vPC peer device. If you do not configure a separate VRF, the system uses the management VRF by default. It is highly recommended to associate a peer-keepalive link to a separate virtual routing and forwarding (VRF) instance that is mapped to a Layer 3 interface in each vPC peer device. The peer-keepalive link sends configurable, periodic keepalive messages between vPC peer devices. VPC peer-keepalive link: The peer-keepalive link monitors the vitality of vPC peer devices.

The vPC peer devices can also have non-vPC links to other devices. You can have only two devices as vPC peers each device can serve as a vPC peer to only one other vPC peer. VPC peer device: One of a pair of devices connected with the special port channel known as the vPC peer-link. VPC: The combined port channel between the vPC peer devices and the downstream device. The components used in vPCs are as follows:

Free virtual pc port settings