On a fiber optic network, Internet service providers (ISPs) can use different methods to assign IP addresses to their subscribers. The two main methods you mention, PPPoE (Point to Point Protocol over Ethernet) and static IP, have their own applications and advantages depending on the context of the service offered.

Let's look at both:

PPPoE (Point to Point Protocol over Ethernet)

• Definition and Use: PPPoE combines Point-to-Point Protocol (PPP) with Ethernet to provide a secure, authenticated way to dynamically assign IP addresses to users on a network. This method is commonly used by ISPs to manage individual user connections over a broadband Internet access infrastructure.
• Advantages: It allows ISPs to control network access using a username and password, facilitates dynamic assignment of IP addresses, and can offer support for multiple services, such as VoIP telephony and IP television, over the same connection. It is flexible and adapts well to environments where IP addresses do not need to be fixed.

Static IP

• Definition and Use: A static IP address is an IP address that is manually assigned to a device and does not change over time. ISPs can offer static IP addresses to their customers for an additional fee, and they are commonly used by businesses or for services that require a constant address, such as mail servers, web servers, or surveillance systems.
• Advantages: It makes it easy to configure DNS, essential for web hosting services, and provides a reliable solution for remote access to network devices. Static IP is ideal for applications that require consistent connectivity and no changes to the IP address.

Choice of Method

The choice between PPPoE and static IP depends on the specific needs of the user or company. For home users and most Internet applications, PPPoE is sufficient and cost-effective, offering flexibility and easy access management. For businesses or applications that rely on a fixed IP address for remote connectivity or hosted services, a static IP is the best option.

In fiber optic networks, both methods are viable and are used depending on service requirements and customer preferences. The fiber optic infrastructure itself is agnostic as to the IP allocation method; The choice between PPPoE and static IP is based more on service management and operational needs than on the technological limitations of fiber optics.