The Benefit of Using a Layered Model

The Benefit of Using a Layered Model

To visualize the interaction between various protocols, it is common to use a layered model. A layered model depicts the operation of the protocols occurring within each layer, as well as the interaction with the layers above and below it.

There are benefits to using a layered model to describe network protocols and operations. Using a layered model:

• Assists in protocol design, because protocols that operate at a specific layer have defined information that they act upon and a defined interface to the layers above and below.
• Fosters competition because products from different vendors can work together.
• Prevents technology or capability changes in one layer from affecting other layers above and below.
• Provides a common language to describe networking functions and capabilities.

Diagram below OSI and TCP/IP Layered model