Noob question on Proxmox network model

ejc317

Member
Oct 18, 2012
263
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http://pve.proxmox.com/wiki/Network_Model

Why would you need to do vlans this way? Let's say I have 4 nodes each with 2 nics

Node 1: NIC A and NIC B
Node 2: NIC C and NIC D
Node 3: NIC E and NIC F
Node 4: NIC G and NIC H

On the switch

port 1: public network drop
port 2, 3, 4, 5 have NICs A, C, E, G for the public network - let's say 67.67.1.x - class C
port 6, 7, 8, 9 have NICs B, D, F, H for the private network let's say 10.10.1.x - class C

You put ports 1 - 5 in vlan 2 (private) and ports 6 - 9 in vlan 3 (private)

So why would you need separate tagged vlans? I only presume its to route IPs and traffic? In which case, how do you route IPs of the subnet to certain vms? (ie 1 VM on node 1 will only have a /29 of IPs on public subnet)
 

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