Why do all VMs get 2 NICs?

[samerg]

Hi,

in my CIAC 3.1.1 setup all my provisioned VMs get two network interfaces, one in the mgmt network and one in the user network. Why is that? I think I'm missing something here ... I would think they get a NIC in one network only.

Regards,

Sascha

[Lee Calcote · Accepted solution]

Sascha, this behavior is driven by the presence or absence of a management network being adjoined to the user network in which the VM is provisioned. Which is to say that if you desire for the VM to have a single NIC, either remove the management network from the given user network or elect to provision the VM into a user network with no associated management network.

[samerg]

Ah ok, I thought the Management Network was mandatory per VDC, but now I see that I can order a VDC without specifying such a network.

How can I remove a Management Network from an existing VDC?

Thanks,
Sascha

[Lee Calcote]

In IAC 3.1.1, once a management network has been joined to a user network (on VDC creation), the two networks are fused. You may remove the management network indirectly by removing the user network from the VDC. A little surgery is required to cut the bond between the two networks and may be done (unsupported) via the tables found under the IPManagement folder in Service Item Manager.

[samerg]

Hi Lee,

thanks for your help on this. I solved this now by removeing the VDC and re-creating it. I did not have too many VMs yet, only test stuff, so that was ok.

Best regards,

Sascha