...
c) Configure the IP address of the VLAN.
set l3-interface vlan-interface <interface interface <interface-name> vif <vif-name> -name> address <address> prefix-length <number>
...
c) Configure the IP address of block VLAN interface.
set l3-interface vlan-interface <interface interface <interface-name> vif <vif-name> -name> address <address> prefix-length <number>
...