The OSI Model
OSI (Open Systems Interconnection) is a reference model for how applications communicate over a network. See complete definition.
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The OSI Model News
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July 03, 2013
03
Jul'13
F5 training effort with University of Phoenix to boost ADC skills
F5 Networks and the University of Phoenix team up for vendor-neutral application delivery controller training.
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December 22, 2011
22
Dec'11
The answer to the top 5 virtualization problems
Transitioning to a virtualized network can be challenging for network engineers, despite the advantages. Understand these top five virtualization problems and how to handle them.
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December 22, 2011
22
Dec'11
vCloud and VEPA: Neither answer is a winner
vCloud and VEPA fail to address the virtualization networking problem, as both are deemed proprietary and don’t enable networking functions within the vSphere environment.
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December 22, 2011
22
Dec'11
When physical security breaches are the problem
Network engineers are so busy dealing with intrusion prevention and firewalling that they forget about physical security breaches. Blogger Ethan Banks has some advice.
The OSI Model Get Started
Bring yourself up to speed with our introductory content
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Session layer
In the Open Systems Interconnection (OSI) communications model, the session layer resides at Layer 5 and manages the setup and teardown of the association between two communicating endpoints. Continue Reading
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OSI model (Open Systems Interconnection)
OSI (Open Systems Interconnection) is a reference model for how applications communicate over a network. Continue Reading
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presentation layer
Residing at Layer 6 of the Open Systems Interconnection (OSI) communications model, the presentation layer ensures that the communications that pass through it are in the appropriate form for the recipient application. Continue Reading
Evaluate The OSI Model Vendors & Products
Weigh the pros and cons of technologies, products and projects you are considering.
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What is the difference between TCP/IP model and OSI model?
Our expert explains the difference between the OSI model vs. the TCP/IP model, and breaks down how the layers of the models relate to each other in terms of network communications. Continue Reading
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Types of network cables: An introduction to network cabling
Different types of networking cables are the backbone of a network's infrastructure. Selecting the right type is critical, as enterprise network admins deploy new technologies. Continue Reading
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Need 10 GbE optimization? Hardware is not the solution
10 GbE brings speed, but network latency is still an issue. The answer to 10 GbE optimization can't be found in increasing hardware. Our blogger says it's about the application. Continue Reading
Manage The OSI Model
Learn to apply best practices and optimize your operations.
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USB cable connection and connector types explained
The USB cable connection remains popular -- particularly with home users -- in part, because of its easy setup. Take a closer look at standard USB and related connection types. Continue Reading
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How to set up a serial cable connection in your network
Serial direct cable connection is examined in this cable networking lesson, which defines the term and explains how it works, as well as the technology required to set one up. Continue Reading
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Introduction to Windows direct cable connection
Methods of direct cable connection have evolved. This tip explains how, as well as what each method -- including UTP crossovers and straight-through cabling -- requires. Continue Reading
Problem Solve The OSI Model Issues
We’ve gathered up expert advice and tips from professionals like you so that the answers you need are always available.
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Can Virtual Extensible LAN solve the VLAN problem?
The Virtual Extensible LAN (VXLAN) protocol could mean the ability to spin off many more VLANs across dispersed data centers. So why does blogger Ivan Pepelnjak take issue? Continue Reading
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Which OSI layers are network managers responsible for?
Learn which layers of the OSI model network managers should be responsible for. Our expert, Lindi Horton, explains where to focus your manual operations, especially regarding automated operation tasks. Continue Reading
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How can I use a Layer 3 switch for voice routing?
Learn how to use a Layer 3 switch for voice routing in this expert response from a switch expert. Continue Reading