Can there be more than one PPPoE server in a single broadcast domain?

In a single broadcast domain, it is indeed possible to have more than one PPPoE (Point-to-Point Protocol over Ethernet) server. Each PPPoE server can be configured to handle connections from clients independently, allowing multiple servers to coexist in the same network segment.

Having several PPPoE servers can provide redundancy, load balancing, and scalability for the network. Clients broadcasting their discovery requests can communicate with multiple servers, which can create opportunities for them to connect based on availability or configured preferences. It’s important for the network design to ensure that there are no conflicts in the settings, such as the naming conventions and authentication processes that might confuse client devices.

While it is a common practice to use a single PPPoE server configuration in smaller networks for simplicity, larger networks may benefit from multiple servers to manage higher volumes of connections or to enhance reliability. The presence of multiple servers does require careful planning and configuration to ensure that they do not interfere with each other's operations or present management challenges.