When you first start the node in your lab, you must complete the initial setup:

configure terminal hostname NXOSv-Lab feature telnet feature ssh feature nxapi username admin password MySecret123 role network-admin interface mgmt0 ip address 192.168.1.100/24 no shutdown exit vrf context management ip route 0.0.0.0/0 192.168.1.1 exit copy running-config startup-config