A pre-configured or automatically assigned network identification is used to enable initial communication or provide a fallback when a device lacks a specific, user-defined configuration. This identification often facilitates initial setup, allowing devices to connect to a network and obtain a more permanent, customized address. For example, a router might have a factory-set IP address that a computer can use to access its configuration page before it is connected to the internet.
The presence of a standardized, readily available network address simplifies device deployment and management. It ensures that devices can establish a basic connection even without prior configuration, enabling administrators to easily configure and manage networked resources. Historically, these addresses reduced the complexity of networking in the early days of TCP/IP and continue to provide a crucial fail-safe mechanism in modern networks.