Networking Introduction
Similar to CPU, memory, and I/O, networking lies at the heart of the Linux system. Networking is the technology responsible for linking various computers or network devices together.
It serves as a fundamental method of inter-process communication, particularly across different systems, necessitating the use of a network. As technologies like high concurrency, distribution, cloud computing, and microservices continue to gain traction, possessing a comprehensive understanding of network performance is increasingly crucial.
In this article, I will will delve into networking models, data encapsulation, stacks, and packet processing.
Networking Models
In networking discussions, you’ve likely encountered the 7-layer OSI model, the traditional 4-layer TCP/IP model, or even the newer 5-layer TCP/IP model.
Interestingly, the TCP/IP network model is actually derived from the OSI (Open System Interconnection) network model. To address compatibility issues among heterogeneous devices in network interconnections and simplify the complex network packet processing, the OSI model divides the network interconnection framework into the following 7 layers:
- Application layer: Responsible for providing a…
