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Internal Networks on a Cluster RRS feed

  • Question

  • An internal network can be created on a Hyper-V server, in which virtual machines can then be seen.

    We now wanted to create exactly such a network on a cluster managed with VMM.

    Machines on different cluster nodes should be able to see each other without using a hardware network card.

    Is this not possible? We can only do this if we create virtual switches on the cluster nodes that are linked to a hardware network card. We do not want this ..

    Volker


    Volker Busch

    Wednesday, July 8, 2020 12:42 PM

All replies

  • Hello Volker,

    You can right click the Hyper-V host and open Properties dialog.

    Then, you select Virtual Switches, and New Standard Switch. You can create a internal switch without associating with the physical NIC. It's same the one as you creating from the Hyper-V Manager.

    Best regards,

    Andy Liu


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    Thursday, July 9, 2020 5:00 AM
  • This is Internal for this Hyper V Host.

    It spans not over the hole cluster.

    what i seek is a network in the cluster which is not bound to a external network card.

    machines on diffenerent cluster nodes should work together.

    they have no connection to internet/other networks.


    Volker Busch

    Thursday, July 9, 2020 7:48 AM
  • Hi,

    Hyper-V or SCVMM does not have such feature where 2 Hyper-V hosts communicates without an external switch. However you can try using Hyper-V with RRAS+NAT to route VM's traffic to external Network but it is still going to be very difficult to ensure all the cluster nodes and their VMs communicate across the cluster nodes.

    Could you explain your requirements and why you don't want to use the Hardware NIC for external communication?
    Thursday, July 9, 2020 9:19 AM
  • We host terminal servers for customers.

    For every new customer we need a separate Class C network that is completely separate.

    We then connect a network card of our (virtualized) firewall in there and routes everything via this firewall.

    This Class-C network does not otherwise need any connections.

    We currently have to map this with VLANS, since this is only possible via external network types. To do this, VLANS must be configured on several switches, in our Blade Center and in the VMM.

    We want to save these unnecessary configurations ..

    Volker Busch

    Thursday, July 9, 2020 10:30 AM
  • So as per your requirement, you can opt for SDN ( Network Virtualization)using scvmm. It will give you separate Virtual Networks for each customer. Hope this helps
    Thursday, July 9, 2020 11:46 AM
  • Hello,

    To make it clear, I write a summary here.

    Issue

    =======

    Is it possible to create a internal network, which enables VMs on different nodes to communicate each other without using a physical NIC.

    Solution

    =======

    It's recommended to use SDN(Network Virtualization) in SCVMM. It allows to create separate virtual networks for each tenant.

    Best regards,

    Andy Liu


    Please remember to mark the replies as answers if they help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

    Wednesday, August 19, 2020 6:04 AM