diff --git a/xos/vtnnetport.py b/xos/vtnnetport.py
new file mode 100644
index 0000000..be092c0
--- /dev/null
+++ b/xos/vtnnetport.py
@@ -0,0 +1,171 @@
+from core.models import *
+from services.vtn.models import VTNService
+
+VTN_SERVCOMP_KINDS=["PRIVATE","VSG"]
+
+class VTNNetwork(object):
+    def __init__(self, xos_network=None):
+        self.xos_network = xos_network
+
+    def get_controller_network(self):
+        for cn in self.xos_network.controllernetworks.all():
+            # TODO: find the right one
+            return cn
+        return None
+
+    def get_cn_field(self, fieldname):
+        cn=self.get_controller_network()
+        if not cn:
+            return None
+        return getattr(cn, fieldname)
+
+    @property
+    def id(self):
+        return self.get_cn_field("net_id")
+
+    @property
+    def name(self):
+        return self.xos_network.name
+
+    @property
+    def subnet(self):
+        return self.get_cn_field("subnet")
+
+    @property
+    def gateway(self):
+        return self.get_cn_field("gateway")
+
+    @property
+    def segmentation_id(self):
+        return self.get_cn_field("segmentation_id")
+
+    @property
+    def type(self):
+        return self.xos_network.template.vtn_kind
+
+    @property
+    def providerNetworks(self):
+        slice = self.xos_network.owner
+        service = slice.service
+        if not service:
+            return []
+
+        nets=[]
+        for tenant in service.subscribed_tenants.all():
+            if tenant.provider_service:
+                bidirectional = tenant.connect_method!="private-unidirectional"
+                for slice in tenant.provider_service.slices.all():
+                    for net in slice.networks.all():
+                        if net.template.vtn_kind not in VTN_SERVCOMP_KINDS:
+                            continue
+
+                        if not net.controllernetworks.exists():
+                            continue
+
+                        cn = net.controllernetworks.all()[0]
+                        nets.append({"id": cn.net_id,
+                                     "name": net.name,
+                                     "bidirectional": bidirectional})
+        return nets
+
+    @property
+    def subscriberNetworks(self):
+        slice = self.xos_network.owner
+        service = slice.service
+        if not service:
+            return []
+
+        nets=[]
+        for tenant in service.provided_tenants.all():
+            if tenant.subscriber_service:
+                bidirectional = tenant.connect_method!="private-unidirectional"
+                for slice in tenant.subscriber_service.slices.all():
+                    for net in slice.networks.all():
+                        if net.template.vtn_kind not in VTN_SERVCOMP_KINDS:
+                            continue
+
+                        if not net.controllernetworks.exists():
+                            continue
+
+                        cn = net.controllernetworks.all()[0]
+                        nets.append({"id": cn.net_id,
+                                     "name": net.name,
+                                     "bidirectional": bidirectional})
+        return nets
+
+    @property
+    def ownerSliceName(self):
+        if self.xos_network.owner:
+            return self.xos_network.owner.name
+        return None
+
+    @property
+    def ownerServiceName(self):
+        if self.xos_network.owner and self.xos_network.owner.service:
+            return self.xos_network.owner.service.name
+        return None
+
+class VTNPort(object):
+    def __init__(self, xos_port=None):
+        self.xos_port = xos_port
+
+    def get_controller_network(self):
+        for cn in self.xos_port.network.controllernetworks.all():
+            # TODO: find the right one
+            return cn
+        return None
+
+    def get_vsg_tenant(self):
+        from services.vsg.models import VSGTenant
+        for tenant in VSGTenant.get_tenant_objects().all():
+            if tenant.instance == self.xos_port.instance:
+                return tenant
+        return None
+
+    @property
+    def vlan_id(self):
+        if not self.xos_port.instance:
+            return None
+        tags = Tag.select_by_content_object(self.xos_port.instance).filter(name="s_tag")
+        if not tags:
+            return None
+        return tags[0].value
+
+    @property
+    def floating_address_pairs(self):
+        address_pairs = []
+        vsg = self.get_vsg_tenant()
+        if vsg:
+            if vsg.wan_container_ip and vsg.wan_container_mac:
+                address_pairs.append({"ip_address": vsg.wan_container_ip,
+                                      "mac_address": vsg.wan_container_mac})
+
+            if vsg.wan_vm_ip and vsg.wan_vm_mac:
+                address_pairs.append({"ip_address": vsg.wan_vm_ip,
+                                      "mac_address": vsg.wan_vm_mac})
+
+        return address_pairs
+
+    @property
+    def id(self):
+        return self.xos_port.port_id
+
+    @property
+    def name(self):
+        return "port-%s" % self.xos_port.id
+
+    @property
+    def network_id(self):
+        cn = self.get_controller_network()
+        if not cn:
+            return None
+        return cn.net_id
+
+    @property
+    def mac_address(self):
+        return self.xos_port.mac
+
+    @property
+    def ip_address(self):
+        return self.xos_port.ip
+