With IPsec task offloading enabled, you can offload IPsec-related tasks to a network adapter so as not to overuse hardware resources.However, creating a Hyper-V VM is merely the first step of building a large-scale virtual environment; thereafter, you have to ensure that VMs that are running on a Hyper-V host are able to communicate with one another.For this purpose, you need to have knowledge on Hyper-V network adapters, the technology behind Hyper-V networking, as well as how Hyper-V networking can be configured.In short, vNIC enables and manages all network communications.
However, you can assign additional IP addresses to that NIC in order to gain access to multiple subnets. However, when you enable Hyper-V on Windows 10, you can use a Default Switch for seamless networking, as it provides access to the hosts network. However, newly created VMs do not have any virtual switches assigned to them. Each new VM has a network adapter, which can be configured by assigning a single virtual switch, or you can leave it disconnected. Thus, to enable network connectivity, you need to create a virtual switch and configure a virtual network adapter. An external virtual switch enables communications between VMs on the same physical computer, VMs and the physical computer, as well as enables VMs to access physical network. However, this type of switch does not provide access to a physical network. This type of network provides an isolated mode of network connectivity. VLAN tagging simplifies the process of identifying which information packet belongs to a particular VLAN. As a result, this method allows you to isolate network traffic, and ensures that network communications are performed without disruption. Moreover, a legacy network adapter is applied for enabling communication between guest OSes that are not supported by Hyper-V. Legacy vNiCs can perform a network-based installation of the guest OSes. In this case, network connectivity is enabled by VMBus, which provides and controls communication between separate partitions. Furthermore, with this type of a network adapter, you are able to use VLAN tagging. In the Hardware Section, select Add Hardware to see the list of devices that you can add to your VM. In our case, we are only interested in two options: Network Adapter and Legacy Network Adapter (which is only available for Generation 1 VMs). You are also able to remove the Hyper-V network adapter by clicking Remove. Here, you can enable Virtual Machine Queue (VMQ) and IPsec task offloading, as well as specify the maximum number of Offloaded SA (security associations). Hyper-V Virtual Machine Queue is a hardware virtualization technology that ensures direct network data transfer to the VM shared memory. IPsec is the security protocol used for encrypting network data exchange.
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