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Stub Network

Definition of Stub Network

A stub network refers to a simplified form of a computer network that typically consists of a single network link to a larger network or the internet. In this setup, all outgoing traffic from the stub network is routed through a single gateway or router, which manages the communication between devices within the stub network and the external network.

Origin of Stub Network

The concept of a stub network originates from the early days of computer networking when the internet was still in its infancy. As networks began to grow in complexity, it became necessary to develop simpler and more efficient ways to connect smaller networks to larger ones. The stub network design emerged as a solution to this challenge, providing a straightforward and manageable way to extend connectivity to peripheral devices and smaller network segments.

Practical Application of Stub Network

One practical application of stub networks is in the setup of branch offices within larger organizations. In this scenario, each branch office can be considered a stub network, with its own local network infrastructure connecting devices such as computers, printers, and servers. By connecting each branch office as a stub network to the main corporate network through a single gateway, network administrators can streamline management and ensure efficient communication between all locations.

Benefits of Stub Network

Simplicity: Stub networks offer a straightforward and easy-to-understand network topology, making them ideal for connecting peripheral devices or smaller network segments.

Efficiency: By routing all outgoing traffic through a single gateway, stub networks reduce the complexity of network routing and improve overall network efficiency.

Scalability: Stub networks can easily scale to accommodate growth by adding additional network links or expanding the capacity of the gateway router as needed.

Security: Centralizing network access through a single gateway enhances security by allowing administrators to implement robust security measures and monitor network traffic more effectively.


A stub network typically consists of one or more devices connected to a local network segment, a gateway router that connects the stub network to the larger network or the internet, and network cables or wireless connections to facilitate communication between devices.

While the primary purpose of a stub network is to connect to a single larger network or the internet, it is possible to configure multiple gateway routers to connect a stub network to multiple larger networks. However, this setup may increase complexity and require additional network management resources.

One limitation of stub networks is that they are designed for simple network topologies and may not be suitable for large-scale deployments or highly complex network configurations. Additionally, relying on a single gateway router for all outgoing traffic can create a single point of failure, so redundancy and failover mechanisms should be implemented for critical network infrastructure.


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