Thank you for your reply amd advice.

I ve tried that, but unfortunately when the vm-router starts on host1 it will only assign IPs toVMs residing on host1. If i migrate the  vm-router on host2 it will  assign IPs only on Vms residing on host2.

And even if i assign IPs manually..
I can ping all the VMs under host1 from a host1 VM,
I can ping all the VMs under host2 from a host2 VM.

I cannot ping a host2 VM from a host1VM and vice versa.



---- Dominik Holler wrote ----

On Mon, 21 Jan 2019 14:00:14 -0000
adamantini.peratikou@ouc.ac.cy wrote:

> I  have the following configuraton:
> 1 cluster, 2 Hosts
>
>  I would like to use a Vm-router under Host 1 to act as a dhcp server for both HOST1 and HOST2 VMs is it possible?


Yes.
oVirt's logical networks provides isolation on layer 2.
If the switch connection the two hosts does not block this, you can
1. create a new logical network with a vlan tag in oVirt,
2. connect this new logical network to both hosts,
   ( Compute > Hosts > xxx > Network Interfaces > Setup Host Networks)
3. add a new network interface with network profile of the new logical
   network to the router/dhcp server VM and
4. use the same logical network for the network interface of the client
   VMs.

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