Guest VMs & 2 Host NICs on 2 Subnets

gte451f

New Member
Mar 16, 2010
13
0
1
I have a host server with two physical nics each on a different subnet....
10.1 & 172.16

Can someone point me to a resource explaining how to get these configured on the Host so that I can tell my VMs (both OpenVZ and KVM) which subnet to join?


I'm reading the wiki article "Network Model" but I'm not sure which way to go. Bridge? VLan?
http://pve.proxmox.com/wiki/Network_Model

Do I setup each NIC as show in the screen shot? Do I bond them together?
ProxNetwork1.png
 

udo

Famous Member
Apr 22, 2009
5,923
180
83
Ahrensburg; Germany
I have a host server with two physical nics each on a different subnet....
10.1 & 172.16

Can someone point me to a resource explaining how to get these configured on the Host so that I can tell my VMs (both OpenVZ and KVM) which subnet to join?


I'm reading the wiki article "Network Model" but I'm not sure which way to go. Bridge? VLan?
http://pve.proxmox.com/wiki/Network_Model

Do I setup each NIC as show in the screen shot? Do I bond them together?
View attachment 518
Hi,
bridges are the right way (like you do). But only at vmbr0 you need an ip-adress on the host.
If you have bridges, you can simply use this for the Nic of the VM - it's like an network hub - all interfaces (physically and virtual) on one bridge are connected together.

Udo
 

gte451f

New Member
Mar 16, 2010
13
0
1
Thanks for the tip udo but I'm hung up on something.

I've tried create a debian container (OpenVZ) and attempted to assign it VETH on eth1 using vmbr1 as shown...
CreateContainer.png

But I get this as result...notice vmbr1 (which is assgined to eth1) is actually listed with eth0 here!
Edit Network.png


I've tried to set /etc/network/interfaces with the example shown in the networking model....

auto lo
iface lo inet loopback

auto vmbr1
iface vmbr1 inet static
address 192.168.10.2
netmask 255.255.255.0
gateway 192.168.10.1
bridge_ports eth1
bridge_stp off
bridge_fd 0

But I can't even get the interface to show up ever after rebooting.
 

tom

Proxmox Staff Member
Staff member
Aug 29, 2006
15,536
918
163
looks like there is a confusion about the host and guest network setup.

If you assign one veth (vmbr_x) to your container, you will always see just eth0 inside.
 

gte451f

New Member
Mar 16, 2010
13
0
1
I think I get it, you are saying that from the guests perspective the host eth1 adapter is assigned to the guest as eth0.
 

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