• Less Complex: Compared to not using a model, network models break the concepts into smaller parts.<p>
• Standard Interfaces: The standard interface definitions between each layer allow for multiple vendors to create products that complete to be used for a given function, along with all the benefits of open competition.<p>
• Easier to learn: Humans can more easily discuss and learn about the many details of a protocol speccification.<p>
• Easier to develop: Reduced complexity allows easier program changes and faster product development.<p>
• Multivendor interoperability: Creating products to meet the same networking standards means that computers and networking gear from multiple vendors can work in the same network.<p>
• Modular engineering: One vendor can write software that implements higher layers – for example, a web browser – and another vendor can write software that implements the lower layers – for example, Microsoft’s built-in TCP/IP software in its operating systems.