SDN

Software Defined Network

• Zone - upper level:
  • VMs are assigned to zones.
  • user permissions are applied to zones
  • zones are containers of VNets
  • zone types:
    • Simple a simple bridge on single Proxmox node - no communication across the cluster.
      • usage: user friendly zone names instead of vmbrX interfaces. But still needs to specify VLAN tag for VLANs.
    • VLAN
      • like above but with VLAN tag assigned
    • QinQ - 802.1Q tunnelling / stacked VLANs / 802.1ad
      • first VLAN tag in L2 frame is a provider / service vlan
      • 2nd VLAN tag in L2 frame is customer tag
    • VxLAN RFC 7348 (tech preview)
      • encapsulate L2 frames in L3 UDP packets.
      • L3 networks solves lots of forwarding/routing problems of L2 networks. No STP nor VLANs needed.
      • well known protocols like OSPF, EIGRP can be used for L3.
      • VNI tag is 24 bit (16 777 215 VxLANs)
      • one VxLAN is a group of Virtual Tunnels. VTEPs (Virtual Tunnel Endpoint) acts like switch
    • EVPN (tech preview)
• VNets - lower