What is Virtual Networking?
Wed, 14 Apr 2021
Virtual networking enables multiple computers, virtual machines (VMs), virtual servers, or other devices to communicate across different office locations and data centers. While physical networking connects computers through cabling and other hardware, virtual networking extends these capabilities by using software management to connect computers and servers over the Internet. It utilizes virtualized versions of traditional network tools, such as switches and network adapters, enabling more efficient routing and easier changes in network configuration.
Virtual networking enables devices with the same capabilities as a traditional physical network to function across many locations. This allows data centers to stretch across different physical locations and provides network administrators with new and more efficient options, such as the ability to easily modify the network as needs change without having to switch out or buy more hardware; greater flexibility in providing the network with specific needs and applications; and the ability to move workloads across the infrast network.
How does Virtual Networking work?
Using the software, a virtual network connects virtual machines and devices, no matter where they are. In a physical network, OSI model layer 2 and 3 functions occur inside physical switches and routers. Physical network interface cards (NIC) and network adapters are used for connecting to the network computers and servers. Virtual networking shifts these activities to the software, and other activities.
A software application called a virtual switch or vSwitch controls and directs communication, like virtual machines, between the existing physical network and the virtual parts of the network. And a virtual network adapter enables computers and VMs to connect to a network, including making it possible to connect to a larger network for all machines on a local area network (LAN).
Virtual networking offers a more centralized administration and simplifies network management. For necessary updates and changes, or even testing, separate parts of the network may be accessed remotely, making network management cheaper and easier.
Virtual networking is the basis for cloud architectures and applications, as it enables cloud resources to be accessed, connected, secured, and modified.
Advantages of virtual networking
- Streamlines the amount of network hardware (cabling, switches, etc.) by shifting software to many functions
- Reduces the cost and complexity of managing hardware and software in the network through a central control
- Offers more flexible network routing structure and configuration options including easier network segmentation and subdivision options
- Improves network traffic control with more fine-grained options, such as configuring virtual NIC firewalls
- Increases IT productivity via remote and automated activation of services and performance testing
- Boosts business scalability and flexibility by enabling virtual upgrades, automated configuring, and modular changes to network appliances and applications
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