04-08-2012, 01:29 PM
COMMUNICATION IN NETWORK VIRTUALIZATION
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INTRODUCTION
Network virtualization solutions extend the benefits of virtualization technologies throughout distributed networks, reaching every endpoint and managing every user.
Network virtualization simplifies how IT departments manage networks by deploying and managing IT resources as logical services instead of physical resources.
INFRASTRUCTURE AS A SERVICE(IaaS)Why virtualize your networks?
Your IT infrastructure should follow business’s requirements.
You don’t have to overprovision your IT infrastructure, when estimating future needs, you use resources on a as needed basis.
With virtualization administrators Can manage five to 10 times the number of devices they're managing today.
Virtualized resources are software resources that may accessed by applications or other Services.
You can create virtual resources to partition your network into multiple sub-networks.
Virtual resources can be used within a single domain or across multiple, independently managed domains.
HOW NETWORK VIRTUALISATION WORKS
Network virtualization is a method of combining the available resources in a network by splitting up the available bandwidth into channels, each of which is independent from the others, and each of which can be assigned (or reassigned) to a particular server or device in real time.
VISION FOR NETWORKS
In the 1960s computing was dominated by central managed large mainframe computers and dumb terminals
Users were charge by CPU minute and memory usage
A lot of research into optimizing CPU and memory usage
But starting in the 1970s at our universities and research centers, users could buy their own mini-computer
Researcher could use computer as little or as much as they want with no additional charges
This led to concepts like UNIX, GUI developed ultimately culminating in the PC
Telecommunications and the Internet today is like computing in the 1960s
Users are charged by bandwidth consumed and very centralized management
We believe the next generation of Internet will be
as revolutionary as the PC