Which bridge for VLAN SDN Zone?

A

._apu_.

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Feb 25, 2024
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I have a three-node Proxmox 8.4.1 cluster setup as I learn more about Proxmox ahead of a switch from VMWare. Each node has four NICs - the names vary depending on hardware so, for ease, we'll call then eno11, 12, 13 & 14 (first node), eno21, 22, 23 & 24 (second node) and eno31, 32, 33 & 34 (third node).

  • Each node has its own vmbr0 with either eno11, 21 or 31 associated with it, used for managing Proxmox. These are "access" ports on the switch.
  • Each node has its own vmbr1 with either eno12 & 13, 22 & 23 or 32 & 33 associated with it for Ceph. This is a dedicated switch just for storage traffic.
  • Each node has other bridges (vmbr100, 101, 102, 103, ...) associated with Linux VLAN devices tied to the fourth NIC (eno14.100, eno34.103, etc.) and "trunk" ports on the switch.
Now I want to learn to use SDN VLANs instead of manually configuring VLAN interfaces on each node.

  1. Do I just create a new vmbr2 on each node, associate it with the fourth NIC and then use vmbr2 when I create the SDN VLAN zone configuration? Is vmbr2 VLAN aware at the node level? SDN Zone level? Neither?
  2. I just add SDN VNets with the VLAN info then migrate the hosts from the old Linux VLAN bridges to the new SDN VNets and then delete the node-by-node Linux VLAN bridges and Linux VLAN interfaces?
  3. If I add more nodes in the future, do I have to plan ahead that the name vmbr2 has be used for the SDN VLAN bridge? I can't use vmbr2 as the "uplink" on some nodes but "vmbr3" on other nodes? (I have to break my VMware dvSwitch thinking where I can assign arbitrary uplinks to the configuration.)
  4. If I want to add multiple uplinks per node in the future, I remove the interface from vmbr2, add it to a new Linux bond interface and then add that bond interface to vmbr2 for the SDN VLAN zone to use?
Sorry if this should all be obvious. I might be overthinking this.
 
1.you can use any vmbrX plugged on enox without any vlan enox.Y.

then create the vnets where you'll defined the vlan tag number

better to use vlan-aware on vmbrX, but it's not mandatory.

2. yes. simply defined the vnets , move the vm interfaces to the vnets, delete the old vlan setup

3. you need to have the same vmbrX on each node. (but you can have differents physical interfaces plugged in on each host)

4. yes
 
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