In the "physical world", yes, you could move the NICs from old L2-vlan port group to a new port group (previously created by ACS, by spinning at least one VM in that new network) - but then you would need to hack CloudStack DB to tell it that you VM is on another L2 network - and that would be a risky business.
I would consider scripting that with CloudMonkey (attaching a new network to VM, make it default, detach the old one) - it should be pretty achievable after some testing. Best, On Thu, 4 Mar 2021 at 07:16, Gajdos, Dominik <gaj...@netcloud.ch.invalid> wrote: > Hi > > > > I have to change the instance NIC L2 network to another L2 network. > > > > How can I do this without adding a 2nd NIC – Setting it as default – > Removing the old one? > > > > We have a migration of about 100VMs and I'm looking for the most efficient > way. > > > > In vSphere it's possible to change the port group of a VM on-the-fly. > > > > What are my options in Cloudstack? > > > > Many thanks in advance. > > > > Nik > -- Andrija Panić