diff --git a/test_set/cvp-spt/global_config.yaml b/test_set/cvp-spt/global_config.yaml
index f55a2a6..9a8e738 100644
--- a/test_set/cvp-spt/global_config.yaml
+++ b/test_set/cvp-spt/global_config.yaml
@@ -23,8 +23,9 @@
 skipped_nodes: []
 # example for Jenkins: networks=net1,net2
 networks: "10.101.0.0/24"
+external_network: ''
 HW_NODES: []
 CMP_HOSTS: []
 nova_timeout: 30
 iperf_prep_string: "sudo /bin/bash -c 'echo \"91.189.88.161        archive.ubuntu.com\" >> /etc/hosts'"
-IMAGE_SIZE_MB: 2000
\ No newline at end of file
+IMAGE_SIZE_MB: 2000
diff --git a/test_set/cvp-spt/utils/os_client.py b/test_set/cvp-spt/utils/os_client.py
index c17617f..fb84265 100644
--- a/test_set/cvp-spt/utils/os_client.py
+++ b/test_set/cvp-spt/utils/os_client.py
@@ -9,7 +9,7 @@
 import os
 import random
 import time
-
+import utils
 
 class OfficialClientManager(object):
     """Manager that provides access to the official python clients for
@@ -241,15 +241,18 @@
         return net
 
     def get_external_network(self):
-        networks = [
-            net for net in self.os_clients.network.list_networks()["networks"]
-            if net["admin_state_up"] and net["router:external"] and
-            len(net["subnets"])
-        ]
-        if networks:
-            ext_net = networks[0]
-        else:
-            ext_net = self.create_fake_external_network()
+        config = utils.get_configuration()
+        ext_net = config.get('external_network') or ''
+        if not ext_net:
+            networks = [
+                net for net in self.os_clients.network.list_networks()["networks"]
+                if net["admin_state_up"] and net["router:external"] and
+                len(net["subnets"])
+            ]
+            if networks:
+                ext_net = networks[0]
+            else:
+                ext_net = self.create_fake_external_network()
         return ext_net
 
     def create_flavor(self, name, ram=256, vcpus=1, disk=2):