[edit system services dhcp-local-server]
group v4-trust {
    interface vlan.1;
}

[edit access address-assignment]
pool v4-trust {
    family inet {
        network 192.168.160.0/24;
        range v4-trust-range {
            low 192.168.160.10;
            high 192.168.160.254;
        }
        dhcp-attributes {
            name-server {
                192.168.160.2;
            }
            router {
                192.168.160.1;
            }
        }
    }
}