Windows Server 2012 has been RTM for sometimes now. Most of us are well aware about the latest “Cloud Ready OS” virtualization capability and how in certain features it even surpass the competitor hyper-visor vendor solutions. In case if you’re not aware about the latest HYPER-V improvements you can refer here.
Today with this post I’ll take special attention on HYPER-V network virtualization. This is an area where HYPER-V team has carried out major changes and improvements. They have manage to provide solution to customers, hosting providers to minimize the gap of workload (VM’s) communication and movement between Private and Public clouds. With this brining Public cloud to your network has been greatly simplified. Let’s look at these features benefits from wearing different shoes
Using Hyper-V Network Virtualization across your VM infrastructure provides the following benefits for the workload owners:
* You can perform seamless migration to cloud hosting for VMs, and VMs do not need reconfiguration before migrating to the cloud.
* You can move many VMs and their associated network topology to the cloud. All addressing information and subnet membership can be preserved.
* You can preserve existing IP dependent policies, and access controls do not require reconfiguration.
* You can reuse IP addresses for test networks or systems and simplify moving VMs between test and production networks.
Now let’s move to Enterprise level and see the benefits. Hyper-V Network Virtualization provides the following benefits:
* You can consolidate datacenters and still achieve full performance requirements; there is no further need to overprovision hardware.
* You can make use of cloud hosting for some VMs while other VMs reside on-premises and still communicate. This combines the public and private cloud into a hybrid cloud.
* VMs can be moved to another environment, such as a private or public cloud, without reconfiguration. This helps in acquisition and server consolidation scenarios, in addition to organizations moving VMs to hosting environments.
For hosting organizations, Hyper-V Network Virtualization provides the following benefits:
* You can offer “bring your own IP addresses¡¨ for VM hosting, enabling customers to move to the public cloud more easily. (This is a cool feature offered under HYPER-V replica)
* Customers can move entire subnets to the public cloud and still retain the original network topology.
* Larger datacenters can scale without VLAN limitations.
Network virtualization will be a big deal in the coming hyper visor technologies. All these SDN (software Define Networking) interest is a hint for that. Now how Microsoft HYPER-V provide network virtualization while giving the customer to keep their own IP in the hosting providers datacenter is very much interesting. Hyper-V Network Virtualization can use two different mechanisms to virtualize IP addresses,
* Network Virtualization Generic Routing Encapsulation (NVGRE).
* IP address rewriting.
I found this these two blog posts are have explain the technology very much detail way.