Should I use VSID or VLAN ID for my Hyper-V virtual machines?
By submitting your personal information, you agree that TechTarget and its partners may contact you regarding relevant content, products and special offers.
Both virtual LAN IDs and virtual subnet IDs can help you configure isolated virtual networks for VMs running on a Hyper-V host, but you will need to choose one or the other because only one can be assigned per VM.
Traditionally, if you wanted to isolate a portion of your VMs, you could configure a separate VLAN domain for a group of VMs, which involves assigning the same VLAN ID to each of these VMs. However, starting with Windows Server 2012, you can also assign VSIDs to VMs, as an alternate method to isolate VMs on a network.
VSID assignment is only available on Windows Server 2012 and later Hyper-V hosts, while VLAN ID is available on Microsoft Windows Server 2012 R2 and previous versions. VSID is only available for use with Hyper-V network virtualization, but offers greater scalability options.
- Hyper-V supports up to 4,095 VLAN IDs. In other words, you can only configure 4,095 virtual networks on Hyper-V hosts.
- VSID can support more than 16 million IDs, so you can theoretically create 16 million virtual networks on Windows Server 2012 and later Hyper-V hosts.
VSID helps you run VMs with the same IP scheme. In other words, you can configure two VMs to use the same IP address, as long as these VMs use a different VSID. You assign a VLAN ID on the property page of the VM, which may be an approach many administrators are familiar with. However, you can also use
Set-VMNetworkAdapterVlan PowerShell cmdlet to assign a VLAN ID to a VM. This is useful if you want to assign VLAN IDs to multiple VMs.
VSID can only be assigned using the
Set-VMNetworkAdapterPowerShell cmdlet. To use VSID, you must also configure other Hyper-V network virtualization components, such as Provider Addresses, VM Networks and routing domain IDs. So, assigning VMs a VSID should be part of a larger Hyper-V network virtualization implementation.
VLAN is a generic approach used by most IT organizations to provide isolation for physical and virtualized workloads. However, with the introduction of VSID, cloud hosting providers now have the option to host up to 16 million virtual networks and provide isolation for different customer VMs.
Dig Deeper on Network virtualization
Related Q&A from Nirmal Sharma
A misconfigured SCVMM service template can cause serious headaches. Before deploying service templates in production, validate them with SCVMM ...continue reading
When our Run As account experiences issues, SCVMM doesn't show an error message. How do I check account credentials to ensure they're correct?continue reading
It's getting difficult to keep track of all the service templates in SCVMM. Is there a simple command that enables us to query and export them easily?continue reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.