diff --git a/descriptor-packages/nsd/ping_pong_ns/src/ping_pong_nsd.yaml b/descriptor-packages/nsd/ping_pong_ns/src/ping_pong_nsd.yaml
index 268504c..675a7b2 100644
--- a/descriptor-packages/nsd/ping_pong_ns/src/ping_pong_nsd.yaml
+++ b/descriptor-packages/nsd/ping_pong_ns/src/ping_pong_nsd.yaml
@@ -29,7 +29,7 @@
             nsd:vnfd-id-ref: rift_ping_vnf
         -   nsd:member-vnf-index: '2'
             nsd:vnfd-id-ref: rift_pong_vnf
-        nsd:initial-config-primitive:
+        nsd:initial-service-primitive:
         -   nsd:name: start traffic
             nsd:parameter:
             -   nsd:name: port
diff --git a/descriptor-packages/tools/generate_descriptor_pkg.sh b/descriptor-packages/tools/generate_descriptor_pkg.sh
index d076b28..5cf2510 100755
--- a/descriptor-packages/tools/generate_descriptor_pkg.sh
+++ b/descriptor-packages/tools/generate_descriptor_pkg.sh
@@ -220,7 +220,7 @@
 
     # Add external interfaces
     cat >>$desc_file <<EOF
-            external-interface:
+            interface:
             # Specify the external interfaces
             # There can be multiple interfaces defined
 EOF
@@ -228,11 +228,12 @@
     # Add mgmt interface
     cat >>$desc_file <<EOF
             -   name: eth0
+                type: EXTERNAL
                 virtual-interface:
                     type: VIRTIO
                     bandwidth: '0'
                     vpci: '0000:00:0a.0'
-                vnfd-connection-point-ref: eth0
+                external-connection-point-ref: eth0
 EOF
 
     # Add external interfaces
@@ -241,11 +242,12 @@
         pci=$(get_pci $eth)
         cat >>$desc_file <<EOF
             -   name: eth${eth}
+                type: EXTERNAL
                 virtual-interface:
                     type: ${INTF_TYPE}
                     bandwidth: '0'
                     vpci: '0000:00:${pci}.0'
-                vnfd-connection-point-ref: eth${eth}
+                external-connection-point-ref: eth${eth}
 EOF
     done
 
diff --git a/descriptor-packages/vnfd/VyOS_vnf/src/VyOS__vnfd.yaml b/descriptor-packages/vnfd/VyOS_vnf/src/VyOS__vnfd.yaml
index 0ac926f..4398ff0 100644
--- a/descriptor-packages/vnfd/VyOS_vnf/src/VyOS__vnfd.yaml
+++ b/descriptor-packages/vnfd/VyOS_vnf/src/VyOS__vnfd.yaml
@@ -8,9 +8,6 @@
         mgmt-interface:
             vdu-id: VyOS-VM
         vnf-configuration:
-            config-attributes:
-                config-delay: '0'
-                config-priority: '1'
             service-primitive:
             -   name: config
                 parameter:
@@ -62,37 +59,42 @@
                 storage-gb: '40'
                 vcpu-count: '1'
             mgmt-vpci: 0000:00:0a.0
-            external-interface:
+            interface:
             -   name: eth0
+                type: EXTERNAL
                 virtual-interface:
                     bandwidth: '0'
                     type: OM-MGMT
                     vpci: 0000:00:0a.0
-                vnfd-connection-point-ref: eth0
+                external-connection-point-ref: eth0
             -   name: eth1
+                type: EXTERNAL
                 virtual-interface:
                     bandwidth: '0'
                     type: VIRTIO
                     vpci: 0000:00:0b.0
-                vnfd-connection-point-ref: eth1
+                external-connection-point-ref: eth1
             -   name: eth2
+                type: EXTERNAL
                 virtual-interface:
                     bandwidth: '0'
                     type: VIRTIO
                     vpci: 0000:00:0c.0
-                vnfd-connection-point-ref: eth2
+                external-connection-point-ref: eth2
             -   name: eth3
+                type: EXTERNAL
                 virtual-interface:
                     bandwidth: '0'
                     type: VIRTIO
                     vpci: 0000:00:0d.0
-                vnfd-connection-point-ref: eth3
+                external-connection-point-ref: eth3
             -   name: eth4
+                type: EXTERNAL
                 virtual-interface:
                     bandwidth: '0'
                     type: VIRTIO
                     vpci: 0000:00:0e.0
-                vnfd-connection-point-ref: eth4
+                external-connection-point-ref: eth4
             guest-epa:
                 cpu-pinning-policy: DEDICATED
                 cpu-thread-pinning-policy: PREFER
diff --git a/descriptor-packages/vnfd/cirros_vnf/src/cirros_vnfd.yaml b/descriptor-packages/vnfd/cirros_vnf/src/cirros_vnfd.yaml
index e643b38..47f8d27 100644
--- a/descriptor-packages/vnfd/cirros_vnf/src/cirros_vnfd.yaml
+++ b/descriptor-packages/vnfd/cirros_vnf/src/cirros_vnfd.yaml
@@ -32,15 +32,16 @@
             image: 'CirrOS 0.3.4 64-bit'
             #checksum: 
 
-            external-interface:
+            interface:
             # Specify the external interfaces
             # There can be multiple interfaces defined
             -   name: eth0
+                type: EXTERNAL
                 virtual-interface:
                     type: OM-MGMT
                     bandwidth: '0'
                     vpci: 0000:00:0a.0
-                vnfd-connection-point-ref: eth0
+                external-connection-point-ref: eth0
 
         connection-point:
             -   name: eth0
diff --git a/descriptor-packages/vnfd/ims_allin1_2p_vnf/src/IMS-ALLIN1__vnfd.yaml b/descriptor-packages/vnfd/ims_allin1_2p_vnf/src/IMS-ALLIN1__vnfd.yaml
index b73e110..9e0cd92 100644
--- a/descriptor-packages/vnfd/ims_allin1_2p_vnf/src/IMS-ALLIN1__vnfd.yaml
+++ b/descriptor-packages/vnfd/ims_allin1_2p_vnf/src/IMS-ALLIN1__vnfd.yaml
@@ -8,9 +8,6 @@
         mgmt-interface:
             vdu-id: IMS-ALLIN1_2p-VM
         vnf-configuration:
-            config-attributes:
-                config-delay: '0'
-                config-priority: '1'
             service-primitive:
             -   name: config
                 parameter:
@@ -58,19 +55,21 @@
                 storage-gb: '10'
                 vcpu-count: '2'
             mgmt-vpci: 0000:00:0a.0
-            external-interface:
+            interface:
             -   name: eth0
+                type: EXTERNAL
                 virtual-interface:
                     bandwidth: '0'
                     type: VIRTIO
                     vpci: 0000:00:0a.0
-                vnfd-connection-point-ref: eth0
+                external-connection-point-ref: eth0
             -   name: eth1
+                type: EXTERNAL
                 virtual-interface:
                     bandwidth: '0'
                     type: OM-MGMT
                     vpci: 0000:00:0b.0
-                vnfd-connection-point-ref: eth1
+                external-connection-point-ref: eth1
             guest-epa:
                 cpu-pinning-policy: DEDICATED
                 cpu-thread-pinning-policy: PREFER
diff --git a/descriptor-packages/vnfd/ping_vnf/src/ping_vnfd.yaml b/descriptor-packages/vnfd/ping_vnf/src/ping_vnfd.yaml
index 60f00cf..8c7773f 100644
--- a/descriptor-packages/vnfd/ping_vnf/src/ping_vnfd.yaml
+++ b/descriptor-packages/vnfd/ping_vnf/src/ping_vnfd.yaml
@@ -48,15 +48,17 @@
         vdu:
         -   cloud-init-file: ping_cloud_init.cfg
             count: '1'
-            external-interface:
+            interface:
             -   name: eth0
+                type: EXTERNAL
                 virtual-interface:
                     type: VIRTIO
-                vnfd-connection-point-ref: ping_vnfd/cp0
+                external-connection-point-ref: ping_vnfd/cp0
             -   name: eth1
+                type: EXTERNAL
                 virtual-interface:
                     type: VIRTIO
-                vnfd-connection-point-ref: ping_vnfd/cp1
+                external-connection-point-ref: ping_vnfd/cp1
             id: iovdu_0
             image: Fedora-x86_64-20-20131211.1-sda-ping.qcow2
             name: iovdu_0
@@ -65,8 +67,6 @@
                 storage-gb: '4'
                 vcpu-count: '1'
         vnf-configuration:
-            config-attributes:
-                config-delay: 10
             service-primitive:
             -   name: start
             -   name: stop
diff --git a/descriptor-packages/vnfd/pong_vnf/src/pong_vnfd.yaml b/descriptor-packages/vnfd/pong_vnf/src/pong_vnfd.yaml
index b6bc9a1..835f324 100644
--- a/descriptor-packages/vnfd/pong_vnf/src/pong_vnfd.yaml
+++ b/descriptor-packages/vnfd/pong_vnf/src/pong_vnfd.yaml
@@ -48,15 +48,17 @@
         vdu:
         -   cloud-init-file: pong_cloud_init.cfg
             count: '1'
-            external-interface:
+            interface:
             -   name: eth0
+                type: EXTERNAL
                 virtual-interface:
                     type: VIRTIO
-                vnfd-connection-point-ref: pong_vnfd/cp0
+                external-connection-point-ref: pong_vnfd/cp0
             -   name: eth1
+                type: EXTERNAL
                 virtual-interface:
                     type: VIRTIO
-                vnfd-connection-point-ref: pong_vnfd/cp1
+                external-connection-point-ref: pong_vnfd/cp1
             id: iovdu_0
             image: Fedora-x86_64-20-20131211.1-sda-pong.qcow2
             name: iovdu_0
@@ -65,8 +67,6 @@
                 storage-gb: '4'
                 vcpu-count: '1'
         vnf-configuration:
-            config-attributes:
-                config-delay: 10
             service-primitive:
             -   name: start
             -   name: stop
diff --git a/descriptor-packages/vnfd/ref11_vnf/src/ref11_vnfd.yaml b/descriptor-packages/vnfd/ref11_vnf/src/ref11_vnfd.yaml
index f308282..dc207f9 100644
--- a/descriptor-packages/vnfd/ref11_vnf/src/ref11_vnfd.yaml
+++ b/descriptor-packages/vnfd/ref11_vnf/src/ref11_vnfd.yaml
@@ -20,16 +20,17 @@
             -   id-ref: 'iface11'
             -   id-ref: 'iface21'
         vdu:
-        -   external-interface:
+        -   interface:
             -   name: iface10
+                type: EXTERNAL
                 virtual-interface:
                     type: OM-MGMT
-                vnfd-connection-point-ref: mgmt0
-            internal-interface:
+                external-connection-point-ref: mgmt0
             -   name: iface11
+                type: INTERNAL
                 virtual-interface:
                     type: VIRTIO
-                vdu-internal-connection-point-ref: iface11
+                internal-connection-point-ref: iface11
             internal-connection-point:
             -   name: iface11
                 id: iface11
@@ -41,16 +42,17 @@
                 memory-mb: '2048'
                 storage-gb: '8'
                 vcpu-count: '2'
-        -   external-interface:
+        -   interface:
             -   name: iface22
+                type: EXTERNAL
                 virtual-interface:
                     type: VIRTIO
-                vnfd-connection-point-ref: west
-            internal-interface:
+                external-connection-point-ref: west
             -   name: iface21
+                type: INTERNAL
                 virtual-interface:
                     type: VIRTIO
-                vdu-internal-connection-point-ref: iface21
+                internal-connection-point-ref: iface21
             internal-connection-point:
             -   name: iface21
                 id: iface21
diff --git a/descriptor-packages/vnfd/ref12_vnf/src/ref12_vnfd.yaml b/descriptor-packages/vnfd/ref12_vnf/src/ref12_vnfd.yaml
index 2901c4a..8602895 100644
--- a/descriptor-packages/vnfd/ref12_vnf/src/ref12_vnfd.yaml
+++ b/descriptor-packages/vnfd/ref12_vnf/src/ref12_vnfd.yaml
@@ -23,11 +23,17 @@
             -   id-ref: 'iface41'
         vdu:
         -   description: Middlepoint
-            external-interface:
+            interface:
             -   name: iface30
+                type: EXTERNAL
                 virtual-interface:
                     type: OM-MGMT
-                vnfd-connection-point-ref: mgmt0
+                external-connection-point-ref: mgmt0
+            -   name: iface31
+                type: INTERNAL
+                internal-connection-point-ref: iface31
+                virtual-interface:
+                    type: VIRTIO
             guest-epa:
                 cpu-pinning-policy: DEDICATED
                 mempage-size: "LARGE"
@@ -37,25 +43,27 @@
             -   id: iface31
                 name: iface31
                 type: VPORT
-            internal-interface:
-            -   name: iface31
-                vdu-internal-connection-point-ref: iface31
-                virtual-interface:
-                    type: VIRTIO
             name: Ref_VM3
             vm-flavor:
                 memory-mb: '2048'
                 storage-gb: '8'
                 vcpu-count: '2'
-        -   external-interface:
+        -   interface:
             -   name: iface42
+                type: EXTERNAL
                 virtual-interface:
                     type: PCI-PASSTHROUGH
-                vnfd-connection-point-ref: west
+                external-connection-point-ref: west
             -   name: iface43
+                type: EXTERNAL
                 virtual-interface:
                     type: SR-IOV
-                vnfd-connection-point-ref: east
+                external-connection-point-ref: east
+            -   name: iface41
+                type: INTERNAL
+                internal-connection-point-ref: iface41
+                virtual-interface:
+                    type: VIRTIO
             guest-epa:
                 cpu-pinning-policy: DEDICATED
             id: e526e
@@ -64,10 +72,5 @@
                 name: iface41
                 type: VPORT
             name: Ref_VM4
-            internal-interface:
-            -   name: iface41
-                vdu-internal-connection-point-ref: iface41
-                virtual-interface:
-                    type: VIRTIO
         vendor: ETSI
         version: '1.0'
diff --git a/descriptor-packages/vnfd/ref21_vnf/src/ref21_vnfd.yaml b/descriptor-packages/vnfd/ref21_vnf/src/ref21_vnfd.yaml
index 390ab9d..3d25e94 100644
--- a/descriptor-packages/vnfd/ref21_vnf/src/ref21_vnfd.yaml
+++ b/descriptor-packages/vnfd/ref21_vnf/src/ref21_vnfd.yaml
@@ -10,15 +10,17 @@
         name: Ref_Vnf_21
         short-name: Ref_Vnf_21
         vdu:
-        -   external-interface:
+        -   interface:
             -   name: iface50
+                type: EXTERNAL
                 virtual-interface:
                     type: OM-MGMT
-                vnfd-connection-point-ref: mgmt
+                external-connection-point-ref: mgmt
             -   name: iface51
+                type: EXTERNAL
                 virtual-interface:
                     type: VIRTIO
-                vnfd-connection-point-ref: data
+                external-connection-point-ref: data
             id: ref_vm21
             image: ref_vm21.qcow2
             name: Ref_VM_5
diff --git a/descriptor-packages/vnfd/ref22_vnf/src/ref22_vnfd.yaml b/descriptor-packages/vnfd/ref22_vnf/src/ref22_vnfd.yaml
index 7dddc6f..2b1806d 100644
--- a/descriptor-packages/vnfd/ref22_vnf/src/ref22_vnfd.yaml
+++ b/descriptor-packages/vnfd/ref22_vnf/src/ref22_vnfd.yaml
@@ -12,19 +12,22 @@
         name: Ref_VNF_22
         short-name: Ref_VNF_22
         vdu:
-        -   external-interface:
+        -   interface:
             -   name: iface60
+                type: EXTERNAL
                 virtual-interface:
                     type: OM-MGMT
-                vnfd-connection-point-ref: mgmt
+                external-connection-point-ref: mgmt
             -   name: iface61
+                type: EXTERNAL
                 virtual-interface:
                     type: PCI-PASSTHROUGH
-                vnfd-connection-point-ref: west
+                external-connection-point-ref: west
             -   name: iface62
+                type: EXTERNAL
                 virtual-interface:
                     type: SR-IOV
-                vnfd-connection-point-ref: east
+                external-connection-point-ref: east
             id: abd6831e-f811-4580-9aad-1de9c6424180
             image: ref_vm22.qcow2
             name: Ref_VM6
diff --git a/descriptor-packages/vnfd/ubuntu_cirros_multidisk_vnf/src/ubuntu_cirros_multidisk_vnfd.yaml b/descriptor-packages/vnfd/ubuntu_cirros_multidisk_vnf/src/ubuntu_cirros_multidisk_vnfd.yaml
index da037b1..12d56fd 100644
--- a/descriptor-packages/vnfd/ubuntu_cirros_multidisk_vnf/src/ubuntu_cirros_multidisk_vnfd.yaml
+++ b/descriptor-packages/vnfd/ubuntu_cirros_multidisk_vnf/src/ubuntu_cirros_multidisk_vnfd.yaml
@@ -27,13 +27,14 @@
             # User-data injection
             cloud-init-file: cloud_init.cfg
 
-            external-interface:
+            interface:
             # Specify the external interfaces
             # There can be multiple interfaces defined
             -   name: eth0
+                type: EXTERNAL
                 virtual-interface:
                     type: OM-MGMT
-                vnfd-connection-point-ref: eth0
+                external-connection-point-ref: eth0
             # Specify the volume
             # There can be multiple interfaces defined
             volumes:
diff --git a/descriptor-packages/vnfd/ubuntu_xenial_vnf/src/ubuntu_xenial_vnfd.yaml b/descriptor-packages/vnfd/ubuntu_xenial_vnf/src/ubuntu_xenial_vnfd.yaml
index ee6a3ac..846ccc8 100644
--- a/descriptor-packages/vnfd/ubuntu_xenial_vnf/src/ubuntu_xenial_vnfd.yaml
+++ b/descriptor-packages/vnfd/ubuntu_xenial_vnf/src/ubuntu_xenial_vnfd.yaml
@@ -33,15 +33,16 @@
             # User-data injection
             cloud-init-file: cloud_init.cfg
 
-            external-interface:
+            interface:
             # Specify the external interfaces
             # There can be multiple interfaces defined
             -   name: eth0
+                type: EXTERNAL
                 virtual-interface:
                     type: OM-MGMT
                     bandwidth: '0'
                     vpci: 0000:00:0a.0
-                vnfd-connection-point-ref: eth0
+                external-connection-point-ref: eth0
 
         connection-point:
             -   name: eth0