Network layer

As explained in Rust Servers, Services, and Apps

The network layer routes packets between hosts across networks using network addresses and routing mechanisms.

The networking layer routes packets between hosts across networks using network addresses and routing mechanisms. It forms one layer of the simplified four-layer TCP/IP model, alongside the network access, transport, and application layers. Together, these layers describe communication between a client making a request and the server processing it. section 2.1

Figure 2.1 TCP/IP network model

Use the TCP/IP model diagram to locate the networking layer and relate it to adjacent layers during request processing. section 2.1

How Rust Servers, Services, and Apps covers it

How deep it goes

Defines the layer within a four-layer model but does not descend into routing implementation or packet-processing internals.

Examples

Uses the TCP/IP model diagram and Internet request flow between a client and server as concrete teaching examples.

What you can do after

Evaluate how packet routing fits into layered Internet communication.

How it connects

Connects network access, transport, and application layers with Internet Protocol and the broader TCP/IP model.

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Related concepts

• IP addressuses · An IP address is a numerical address used by the Internet Protocol to identify a network interface and support packet delivery across networks.
• OSI network modelpart of · The OSI network model is a seven-layer conceptual reference framework for organizing and describing network communication functions independently of specific implementations.
• networking modelpart of · A networking model is an abstract framework that organizes the functions and layers involved in communicating data between network endpoints.
• routerused by · A router is a network device that forwards packets between networks based on destination addresses and routing information.
• protocolimplemented by · A protocol is a defined set of rules and conventions governing communication or interaction among systems, components, or participants.

This explainer was generated by Manning's knowledge graph from the text of Rust Servers, Services, and Apps. The section links point to the parts of the book it draws on.