Understanding LAN Connectivity
Local Area Networks (LANs) can be interconnected using various devices, one of which is the bridge. Bridges are crucial for extending network functionality and improving communication between different LANs.
What is a Bridge?
- A bridge is a networking device that operates at the data link layer (Layer 2) of the OSI model.
- It connects two or more networks, allowing them to function as a single network segment.
- Bridges filter traffic, reducing collisions and improving overall network performance.
How Bridges Work
- Bridges use MAC (Media Access Control) addresses to determine whether to forward or filter data packets.
- They learn the addresses of devices on each network segment by examining incoming frames.
- This process helps in creating a table of MAC addresses, which guides packet forwarding decisions.
Benefits of Using Bridges
- Traffic Management: Bridges help manage and control the traffic between LANs, leading to better bandwidth utilization.
- Segmentation: By dividing larger networks into smaller segments, bridges reduce collision domains, improving efficiency.
- Extensibility: They allow for easy expansion of networks without significant changes to the existing infrastructure.
Conclusion
In summary, bridges serve as essential devices for connecting LANs, functioning at the data link layer to facilitate communication, manage traffic, and enhance network performance. Understanding their role is vital for anyone involved in networking, especially in environments requiring efficient data exchange.