osi network layer
CCNA
Layer 3 Switches: How They Work, How to Configure Them, and When to Use Them
Understanding Layer 3 of the OSI model is essential for CCNA (200-301) and CCNP Enterprise study. This layer, the Network layer, handles logical addressing with IP and is responsible for path determination and packet forwarding between networks through devices like routers. Traditional routers perform that Layer 3 work in software, which is flexible but CPU-intensive...
CCNA
The Network Layer: Functions and Protocols Explained
The network layer, Layer 3 of the OSI model, is responsible for one core job: delivering packets from a source device to a destination device across multiple interconnected networks. It defines the packet structure and the processing needed to carry data from one host to another, routing that data through whatever intermediate networks stand between...