network layers

layers.dot

digraph layers {
  size = "8, 8"
  splines = true
  ranksep = 1.5

  node [shape = "plaintext"]
  transit -> transit_vrrp -> lb -> lb_floating -> dmz -> internal

  node [shape = "rect"]
  {rank = "same"; transit br1 br2; }
  {rank = "same"; lb lb1 lb2; }
  {rank = "same"; dmz dmzweb1 dmzweb2 dmzweb3; }

  node [shape = "oval"]
  {rank = "same"; transit_vrrp transit_vrrp_vlan; }
  {rank = "same"; lb_floating lb_floating_ip; }

  node [shape = "oval"]
  {rank = "same"; internal db_master db_replica; }

  br1 -> br2 [dir = "both"]
  br1 -> transit_vrrp_vlan [dir = "both"]
  br2 -> transit_vrrp_vlan [dir = "both"]

  transit_vrrp_vlan -> lb1 [dir = "both"]
  transit_vrrp_vlan -> lb2 [dir = "both"]

  lb1 -> lb_floating_ip [dir = "both"]
  lb2 -> lb_floating_ip [dir = "both", style = "dotted"]

  lb_floating_ip -> dmzweb1 [dir = "both"]
  lb_floating_ip -> dmzweb2 [dir = "both"]
  lb_floating_ip -> dmzweb3 [dir = "both"]

  dmzweb1 -> db_master [dir = "both"]
  dmzweb1 -> db_replica [dir = "both", style = "dotted"]
  dmzweb2 -> db_master [dir = "both"]
  dmzweb2 -> db_replica [dir = "both", style = "dotted"]
  dmzweb3 -> db_master [dir = "both"]
  dmzweb3 -> db_replica [dir = "both", style = "dotted"]
}