Questions[vswitch](server)

I am thinking if it's possible to create a bridge while allowing each bridged network to exist in it's own subnet.
Network 1 - Say, I have a physical ethernet based network eth01 - with subnet 192.168.x.x/16.
Network 2 - I want to create another virtual network veth01(based on virtual interface) with subnet 172.16.x.x/12.

Now is it possible to create a linux bridge (virtual not physical) between Network1 and Network2, such that even after bridging the above two networks have there on subnets and there own DHCP.

Any reference or steps/commands on how to create this setup (if possible) are highly welcomed.

I have seen that in virtual networking, guest VMs/containers can be connected with host and internet either by using kernel bridges(linux) or Virtual Switches.

Example - Bridges

docker uses linux kernel bridges to connect the guest containers to host and internet. Even, VMWare/VirtualBox allows to use bridge networking to connect the guest VM's with the host and internet. Example - Virtual Switches

VMWare ESX uses virtual switches to connect VM's with host and internet. Microsoft Hyper-V uses virtual switches to connect VM's with host and internet. So, I started to wonder what's the difference between these two (bridges and virtual switches) and which approach is better than the other.

(please feel free to edit the question to expand or make the question more meaningful.)

The long and short of it is:

PS C:\WINDOWS\system32> Get-VMSwitch vSwitch

Name    SwitchType NetAdapterInterfaceDescription
----    ---------- ------------------------------
vSwitch External   Intel(R) Ethernet Connection (2) I219-V


PS C:\WINDOWS\system32> (Get-VMSwitch vSwitch).Extensions


Id                  : E7C3B2F0-F3C5-48DF-AF2B-10FED6D72E7A
Name                : Microsoft Windows Filtering Platform
Vendor              : Microsoft
Version             : 10.0.14393.0
ExtensionType       : Filter
ParentExtensionId   :
ParentExtensionName :
SwitchId            : 8082228e-905b-4967-bee9-e19deb3e2fc2
SwitchName          : vSwitch
Enabled             : False
Running             : True
CimSession          : CimSession: .
ComputerName        : EBBOX
IsDeleted           : False

Id                  : EA24CD6C-D17A-4348-9190-09F0D5BE83DD
Name                : Microsoft NDIS Capture
Vendor              : Microsoft
Version             : 10.0.14393.0
ExtensionType       : Monitoring
ParentExtensionId   :
ParentExtensionName :
SwitchId            : 8082228e-905b-4967-bee9-e19deb3e2fc2
SwitchName          : vSwitch
Enabled             : False
Running             : True
CimSession          : CimSession: .
ComputerName        : EBBOX
IsDeleted           : False

PS C:\WINDOWS\system32> Enable-VMSwitchExtension -Name "Microsoft NDIS Capture" -VMSwitchName vSwitch | select-object Enabled

Enabled
-------
   True


PS C:\WINDOWS\system32> Get-VMSwitchExtension vSwitch -Name "Microsoft NDIS Capture" | Select-Object Enabled

Enabled
-------
  False

In other words, I can't enable this VMSwitchExtension, or it continually disables itself. This also happens in the Hyper-V management UI for the virtual switch (I set the checkbox, hit ok or apply, close the dialog, reopen the dialog, and the checkbox is unset).

I am relatively unfamiliar with both Hyper-V and Powershell, so any guidance would be appreciated.

I have a virtualization host (could be either VSphere or SCVVM) that has four NICs, two 1 gbps and two 10 gbps. This machine hosts a VM on two vSwitches with unique names (such as vSwitch0 and vSwitch1), one is on a 1 gbps NIC and the other on a 10 gbps NIC.

This VM is generated automatically through a long powershell process that creates the imports vm definition & empty virtual disk, installs the OS, installs other software, etc.

My problem is that in the guest OS (Server 2012 R2) the network adapters are simply labeled 'Ethernet Adapter' and 'Ethernet Adapter 1'. I cannot tell which is on 'vSwitch0' or 'vSwitch1'. I need each adapter to have a very specific IP based upon which virtual switch it is connected to.

Any ideas? I need to somehow configure this in the powershell script that configures the guest OS.

Thanks in advance!

I need to construct a NAT for certain machines within the network. Wish to do this with dvSwitch - as it seems the logical way of attacking the problem as in this scenario there's just under 30 hosts.

In order for the NAT'ed VM's to have access to the 'real' network. I am providing a 'router' VM, which will have access to the WAN/outside network, and also act as the DHCP server for the NAT'ed machines.

Problem Space

When the machines connected to the NAT interface and the router are on the same host, then they get an IP from the router VM, and work perfectly (routed outside).

Unfortunately machines on other Hosts that are connected to the dvSwitch do not get an IP and further tcpdump shows no network data getting through across the hosts within the dvSwitch.

Has anyone achieved a NAT solution using a dvSwitch before that they could share?!

Thank you.

EDIT:

Including the diagram.