You can use the dladm show-link command to view generic link information about VXLAN links. To view information that is specific to a VXLAN, use the dladm show-vxlan command.
$ dladm show-link LINK CLASS MTU STATE OVER net6 phys 1500 down -- net0 phys 1500 up -- net2 phys 1500 unknown -- net3 phys 1500 unknown -- net1 phys 1500 unknown -- net5 phys 1500 unknown -- net4 phys 1500 up -- vxlan1 vxlan 1440 up -- vnci1 vnic 1440 up vxlan1
$ dladm show-vxlan vxlan1 LINK ADDR VNI MGROUP vxlan1 203.0.113.1 10 224.0.0.1