diff --git a/tcp_tests/templates/virtual-pike-ovs-dpdk/underlay.yaml b/tcp_tests/templates/virtual-pike-ovs-dpdk/underlay.yaml
index 1471b6c..38e0ffc 100644
--- a/tcp_tests/templates/virtual-pike-ovs-dpdk/underlay.yaml
+++ b/tcp_tests/templates/virtual-pike-ovs-dpdk/underlay.yaml
@@ -18,6 +18,14 @@
 {% set HOSTNAME_CTL01 = os_env('HOSTNAME_CTL01', 'ctl01.' + DOMAIN_NAME) %}
 {% set HOSTNAME_CTL02 = os_env('HOSTNAME_CTL02', 'ctl02.' + DOMAIN_NAME) %}
 {% set HOSTNAME_CTL03 = os_env('HOSTNAME_CTL03', 'ctl03.' + DOMAIN_NAME) %}
+{% set HOSTNAME_DBS = os_env('HOSTNAME_DBS', 'dbs.' + DOMAIN_NAME) %}
+{% set HOSTNAME_DBS01 = os_env('HOSTNAME_DBS01', 'dbs01.' + DOMAIN_NAME) %}
+{% set HOSTNAME_DBS02 = os_env('HOSTNAME_DBS02', 'dbs02.' + DOMAIN_NAME) %}
+{% set HOSTNAME_DBS03 = os_env('HOSTNAME_DBS03', 'dbs03.' + DOMAIN_NAME) %}
+{% set HOSTNAME_MSG = os_env('HOSTNAME_MSG', 'msg.' + DOMAIN_NAME) %}
+{% set HOSTNAME_MSG01 = os_env('HOSTNAME_MSG01', 'msg01.' + DOMAIN_NAME) %}
+{% set HOSTNAME_MSG02 = os_env('HOSTNAME_MSG02', 'msg02.' + DOMAIN_NAME) %}
+{% set HOSTNAME_MSG03 = os_env('HOSTNAME_MSG03', 'msg03.' + DOMAIN_NAME) %}
 {% set HOSTNAME_CMP01 = os_env('HOSTNAME_CMP01', 'cmp01.' + DOMAIN_NAME) %}
 {% set HOSTNAME_CMP02 = os_env('HOSTNAME_CMP02', 'cmp02.' + DOMAIN_NAME) %}
 {% set HOSTNAME_GTW01 = os_env('HOSTNAME_GTW01', 'gtw01.' + DOMAIN_NAME) %}
@@ -38,6 +46,14 @@
             default_{{ HOSTNAME_CTL01 }}: +101
             default_{{ HOSTNAME_CTL02 }}: +102
             default_{{ HOSTNAME_CTL03 }}: +103
+            default_{{ HOSTNAME_DBS }}: +50
+            default_{{ HOSTNAME_DBS01 }}: +51
+            default_{{ HOSTNAME_DBS02 }}: +52
+            default_{{ HOSTNAME_DBS03 }}: +53
+            default_{{ HOSTNAME_MSG }}: +40
+            default_{{ HOSTNAME_MSG01 }}: +41
+            default_{{ HOSTNAME_MSG02 }}: +42
+            default_{{ HOSTNAME_MSG03 }}: +43
             default_{{ HOSTNAME_CMP01 }}: +105
             default_{{ HOSTNAME_CMP02 }}: +106
             default_{{ HOSTNAME_GTW01 }}: +110
@@ -55,6 +71,14 @@
             default_{{ HOSTNAME_CTL01 }}: +101
             default_{{ HOSTNAME_CTL02 }}: +102
             default_{{ HOSTNAME_CTL03 }}: +103
+            default_{{ HOSTNAME_DBS }}: +50
+            default_{{ HOSTNAME_DBS01 }}: +51
+            default_{{ HOSTNAME_DBS02 }}: +52
+            default_{{ HOSTNAME_DBS03 }}: +53
+            default_{{ HOSTNAME_MSG }}: +40
+            default_{{ HOSTNAME_MSG01 }}: +41
+            default_{{ HOSTNAME_MSG02 }}: +42
+            default_{{ HOSTNAME_MSG03 }}: +43
             default_{{ HOSTNAME_CMP01 }}: +105
             default_{{ HOSTNAME_CMP02 }}: +106
             default_{{ HOSTNAME_GTW01 }}: +110
@@ -72,6 +96,14 @@
             default_{{ HOSTNAME_CTL01 }}: +101
             default_{{ HOSTNAME_CTL02 }}: +102
             default_{{ HOSTNAME_CTL03 }}: +103
+            default_{{ HOSTNAME_DBS }}: +50
+            default_{{ HOSTNAME_DBS01 }}: +51
+            default_{{ HOSTNAME_DBS02 }}: +52
+            default_{{ HOSTNAME_DBS03 }}: +53
+            default_{{ HOSTNAME_MSG }}: +40
+            default_{{ HOSTNAME_MSG01 }}: +41
+            default_{{ HOSTNAME_MSG02 }}: +42
+            default_{{ HOSTNAME_MSG03 }}: +43
             default_{{ HOSTNAME_CMP01 }}: +105
             default_{{ HOSTNAME_CMP02 }}: +106
             default_{{ HOSTNAME_GTW01 }}: +110
@@ -89,6 +121,14 @@
             default_{{ HOSTNAME_CTL01 }}: +101
             default_{{ HOSTNAME_CTL02 }}: +102
             default_{{ HOSTNAME_CTL03 }}: +103
+            default_{{ HOSTNAME_DBS }}: +50
+            default_{{ HOSTNAME_DBS01 }}: +51
+            default_{{ HOSTNAME_DBS02 }}: +52
+            default_{{ HOSTNAME_DBS03 }}: +53
+            default_{{ HOSTNAME_MSG }}: +40
+            default_{{ HOSTNAME_MSG01 }}: +41
+            default_{{ HOSTNAME_MSG02 }}: +42
+            default_{{ HOSTNAME_MSG03 }}: +43
             default_{{ HOSTNAME_CMP01 }}: +105
             default_{{ HOSTNAME_CMP02 }}: +106
             default_{{ HOSTNAME_GTW01 }}: +110
@@ -288,6 +328,162 @@
               interfaces: *interfaces
               network_config: *network_config
 
+          - name: {{ HOSTNAME_DBS01 }}
+            role: salt_minion
+            params:
+              vcpu: !os_env SLAVE_NODE_CPU, 2
+              memory: !os_env SLAVE_NODE_MEMORY, 8192
+              boot:
+                - hd
+              cloud_init_volume_name: iso
+              cloud_init_iface_up: ens3
+              volumes:
+                - name: system
+                  capacity: !os_env NODE_VOLUME_SIZE, 150
+                  backing_store: cloudimage1604
+                  format: qcow2
+                - name: iso  # Volume with name 'iso' will be used
+                             # for store image with cloud-init metadata.
+                  capacity: 1
+                  format: raw
+                  device: cdrom
+                  bus: ide
+                  cloudinit_meta_data: *cloudinit_meta_data
+                  cloudinit_user_data: *cloudinit_user_data_1604
+
+              interfaces: *interfaces
+              network_config: *network_config
+
+          - name: {{ HOSTNAME_DBS02 }}
+            role: salt_minion
+            params:
+              vcpu: !os_env SLAVE_NODE_CPU, 2
+              memory: !os_env SLAVE_NODE_MEMORY, 8192
+              boot:
+                - hd
+              cloud_init_volume_name: iso
+              cloud_init_iface_up: ens3
+              volumes:
+                - name: system
+                  capacity: !os_env NODE_VOLUME_SIZE, 150
+                  backing_store: cloudimage1604
+                  format: qcow2
+                - name: iso  # Volume with name 'iso' will be used
+                             # for store image with cloud-init metadata.
+                  capacity: 1
+                  format: raw
+                  device: cdrom
+                  bus: ide
+                  cloudinit_meta_data: *cloudinit_meta_data
+                  cloudinit_user_data: *cloudinit_user_data_1604
+
+              interfaces: *interfaces
+              network_config: *network_config
+
+          - name: {{ HOSTNAME_DBS03 }}
+            role: salt_minion
+            params:
+              vcpu: !os_env SLAVE_NODE_CPU, 2
+              memory: !os_env SLAVE_NODE_MEMORY, 8192
+              boot:
+                - hd
+              cloud_init_volume_name: iso
+              cloud_init_iface_up: ens3
+              volumes:
+                - name: system
+                  capacity: !os_env NODE_VOLUME_SIZE, 150
+                  backing_store: cloudimage1604
+                  format: qcow2
+                - name: iso  # Volume with name 'iso' will be used
+                             # for store image with cloud-init metadata.
+                  capacity: 1
+                  format: raw
+                  device: cdrom
+                  bus: ide
+                  cloudinit_meta_data: *cloudinit_meta_data
+                  cloudinit_user_data: *cloudinit_user_data_1604
+
+              interfaces: *interfaces
+              network_config: *network_config
+
+          - name: {{ HOSTNAME_MSG01 }}
+            role: salt_minion
+            params:
+              vcpu: !os_env SLAVE_NODE_CPU, 2
+              memory: !os_env SLAVE_NODE_MEMORY, 4096
+              boot:
+                - hd
+              cloud_init_volume_name: iso
+              cloud_init_iface_up: ens3
+              volumes:
+                - name: system
+                  capacity: !os_env NODE_VOLUME_SIZE, 150
+                  backing_store: cloudimage1604
+                  format: qcow2
+                - name: iso  # Volume with name 'iso' will be used
+                             # for store image with cloud-init metadata.
+                  capacity: 1
+                  format: raw
+                  device: cdrom
+                  bus: ide
+                  cloudinit_meta_data: *cloudinit_meta_data
+                  cloudinit_user_data: *cloudinit_user_data_1604
+
+              interfaces: *interfaces
+              network_config: *network_config
+
+          - name: {{ HOSTNAME_MSG02 }}
+            role: salt_minion
+            params:
+              vcpu: !os_env SLAVE_NODE_CPU, 2
+              memory: !os_env SLAVE_NODE_MEMORY, 4096
+              boot:
+                - hd
+              cloud_init_volume_name: iso
+              cloud_init_iface_up: ens3
+              volumes:
+                - name: system
+                  capacity: !os_env NODE_VOLUME_SIZE, 150
+                  backing_store: cloudimage1604
+                  format: qcow2
+                - name: iso  # Volume with name 'iso' will be used
+                             # for store image with cloud-init metadata.
+                  capacity: 1
+                  format: raw
+                  device: cdrom
+                  bus: ide
+                  cloudinit_meta_data: *cloudinit_meta_data
+                  cloudinit_user_data: *cloudinit_user_data_1604
+
+              interfaces: *interfaces
+              network_config: *network_config
+
+          - name: {{ HOSTNAME_MSG03 }}
+            role: salt_minion
+            params:
+              vcpu: !os_env SLAVE_NODE_CPU, 2
+              memory: !os_env SLAVE_NODE_MEMORY, 4096
+              boot:
+                - hd
+              cloud_init_volume_name: iso
+              cloud_init_iface_up: ens3
+              volumes:
+                - name: system
+                  capacity: !os_env NODE_VOLUME_SIZE, 150
+                  backing_store: cloudimage1604
+                  format: qcow2
+                - name: iso  # Volume with name 'iso' will be used
+                             # for store image with cloud-init metadata.
+                  capacity: 1
+                  format: raw
+                  device: cdrom
+                  bus: ide
+                  cloudinit_meta_data: *cloudinit_meta_data
+                  cloudinit_user_data: *cloudinit_user_data_1604
+
+              interfaces: *interfaces
+              network_config: *network_config
+
           - name: {{ HOSTNAME_PRX01 }}
             role: salt_minion
             params: