How do I create a peer link for VDC and a keepalive link for each VDC?

Configure the vPC Keepalive Link and Messages

This example demonstrates how to configure the destination, source IP address, and VRF for the vPC-peer-keepalive link:

switch# configure terminal switch(config)# feature vpcswitch(config)# vpc domain 100switch(config-vpc-domain)# peer-keepalive destination 172.168.1.2 source  172.168.1.1 vrf vpc-keepalive

Create the vPC Peer Link

This example demonstrates how to configure a vPC peer link:

switch# configure terminal switch(config)# interface port-channel 20switch(config-if)# vpc peer-linkswitch(config-vpc-domain)#