diff --git a/xos/synchronizer/steps/sync_vspgwutenant.py b/xos/synchronizer/steps/sync_vspgwutenant.py
index 4f5d9f2..c6083a8 100644
--- a/xos/synchronizer/steps/sync_vspgwutenant.py
+++ b/xos/synchronizer/steps/sync_vspgwutenant.py
@@ -15,7 +15,6 @@
 import os
 import sys
 from django.db.models import Q, F
-#from services.vspgwu.models import VSPGWUService, VSPGWUTenant
 from synchronizers.new_base.modelaccessor import *
 from synchronizers.new_base.SyncInstanceUsingAnsible import SyncInstanceUsingAnsible
 
@@ -38,3 +37,200 @@
         super(SyncVSPGWUTenant, self).__init__(*args, **kwargs)
 
 
+    def get_extra_attributes(self, o):
+
+        scenario = self.get_scenario()
+
+        if scenario == 'ng4t_with_sdncontroller':
+            return self.get_values_for_ng4t_w_sdncontroller()
+        elif scenario == 'ng4t_without_sdncontroller':
+            return self.get_values_for_ng4t_wo_sdncontroller()
+        elif scenario == 'spirent_with_sdncontroller':
+            return self.get_values_for_spirent_w_sdncontroller()
+        elif scenario == 'spirent_without_sdncontroller':
+            return self.get_values_for_spirent_wo_sdncontroller()
+        else:
+            return self.get_extra_attributes_for_manual()
+
+    # fields for manual case
+    def get_extra_attributes_for_manual(self):
+        fields = {}
+        fields['scenario'] = self.get_scenario()
+        # for interface.cfg file
+        fields['zmq_sub_ip'] = "manual"
+        fields['zmq_pub_ip'] = "manual"
+        fields['dp_comm_ip'] = "manual"
+        fields['cp_comm_ip'] = "manual"
+        fields['fpc_ip'] = "manual"
+        fields['cp_nb_server_ip'] = "manual"
+
+        # for dp_config.cfg file
+        fields['s1u_ip'] = "manual"
+        fields['sgi_ip'] = "manual"
+
+        return fields
+
+    def get_values_for_ng4t_w_sdncontroller(self):
+        fields = {}
+        fields['scenario'] = "ng4t_with_sdncontroller"
+        # for interface.cfg file
+        fields['zmq_sub_ip'] = self.get_ip_address('sbi_network', SDNControllerServiceInstance, 'zmq_sub_ip')
+        fields['zmq_pub_ip'] = self.get_ip_address('sbi_network', SDNControllerServiceInstance, 'zmq_pub_ip')
+        fields['dp_comm_ip'] = self.get_ip_address('sbi_network', VSPGWUTenant, 'dp_comm_ip')
+        fields['cp_comm_ip'] = self.get_ip_address('nbi_network', VSPGWCTenant, 'cp_comm_ip')
+        fields['fpc_ip'] = self.get_ip_address('nbi_network', SDNControllerServiceInstance, 'fpc_ip')
+        fields['cp_nb_server_ip'] = self.get_ip_address('nbi_network', VSPGWCTenant, 'cp_nb_server_ip')
+
+        # for dp_config.cfg file
+        fields['s1u_ip'] = self.get_ip_address('s1u_network', VSPGWUTenant, 's1u_ip')
+        fields['sgi_ip'] = self.get_ip_address('sgi_network', VSPGWUTenant, 'sgi_ip')
+
+        return fields
+
+    def get_values_for_ng4t_wo_sdncontroller(self):
+        fields = {}
+        fields['scenario'] = "ng4t_without_sdncontroller"
+        # for interface.cfg file
+        fields['zmq_sub_ip'] = "127.0.0.1"
+        fields['zmq_pub_ip'] = "127.0.0.1"
+        fields['dp_comm_ip'] = self.get_ip_address('spgw_network', VSPGWUTenant, 'dp_comm_ip')
+        fields['cp_comm_ip'] = self.get_ip_address('spgw_network', VSPGWCTenant, 'cp_comm_ip')
+        fields['fpc_ip'] = "127.0.0.1"
+        fields['cp_nb_server_ip'] = "127.0.0.1"
+
+        # for cp_config.cfg file
+        fields['s1u_ip'] = self.get_ip_address('s1u_network', VSPGWUTenant, 's1u_ip')
+        fields['sgi_ip'] = self.get_ip_address('sgi_network', VSPGWUTenant, 'sgi_ip')
+
+        return fields
+
+    def get_values_for_spirent_w_sdncontroller(self):
+        fields = {}
+        fields['scenario'] = "ng4t_with_sdncontroller"
+        # for interface.cfg file
+        fields['zmq_sub_ip'] = self.get_ip_address('sbi_network', SDNControllerServiceInstance, 'zmq_sub_ip')
+        fields['zmq_pub_ip'] = self.get_ip_address('sbi_network', SDNControllerServiceInstance, 'zmq_pub_ip')
+        fields['dp_comm_ip'] = self.get_ip_address('sbi_network', VSPGWUTenant, 'dp_comm_ip')
+        fields['cp_comm_ip'] = self.get_ip_address('nbi_network', VSPGWCTenant, 'cp_comm_ip')
+        fields['fpc_ip'] = self.get_ip_address('nbi_network', SDNControllerServiceInstance, 'fpc_ip')
+        fields['cp_nb_server_ip'] = self.get_ip_address('nbi_network', VSPGWCTenant, 'cp_nb_server_ip')
+
+        # for dp_config.cfg file
+        fields['s1u_ip'] = self.get_ip_address('s1u_network', VSPGWUTenant, 's1u_ip')
+        fields['sgi_ip'] = self.get_ip_address('sgi_network', VSPGWUTenant, 'sgi_ip')
+
+        return fields
+
+    def get_values_for_spirent_wo_sdncontroller(self):
+        fields = {}
+        fields['scenario'] = "ng4t_without_sdncontroller"
+        # for interface.cfg file
+        fields['zmq_sub_ip'] = "127.0.0.1"
+        fields['zmq_pub_ip'] = "127.0.0.1"
+        fields['dp_comm_ip'] = self.get_ip_address('spgw_network', VSPGWUTenant, 'dp_comm_ip')
+        fields['cp_comm_ip'] = self.get_ip_address('spgw_network', VSPGWCTenant, 'cp_comm_ip')
+        fields['fpc_ip'] = "127.0.0.1"
+        fields['cp_nb_server_ip'] = "127.0.0.1"
+
+        # for cp_config.cfg file
+        fields['s1u_ip'] = self.get_ip_address('s1u_network', VSPGWUTenant, 's1u_ip')
+        fields['sgi_ip'] = self.get_ip_address('sgi_network', VSPGWUTenant, 'sgi_ip')
+
+        return fields
+
+    def has_venb(self):
+        # try get vMME instance
+        try:
+            instance_id = self.get_instance_id(VENBServiceInstance)
+        except Exception:
+            print 'cannot get VENBServiceInstance'
+            return False
+
+        return True
+
+    def has_vmme(self):
+        # try get vMME instance
+        try:
+            instance_id = self.get_instance_id(VMMETenant)
+        except Exception:
+            print 'cannot get VMMETenant'
+            return False
+
+        return True
+
+    def has_sdncontroller(self):
+        # try get vMME instance
+        try:
+            instance_id = self.get_instance_id(SDNControllerServiceInstance)
+        except Exception:
+            print 'cannot get SDNControllerServiceInstance'
+            return False
+
+        return True
+
+    def has_vspgwu(self):
+        # try get vMME instance
+        try:
+            instance_id = self.get_instance_id(VSPGWUTenant)
+        except Exception:
+            print 'cannot get VSPGWUTenant'
+            return False
+
+        return True
+
+    def has_internetemulator(self):
+        # try get vMME instance
+        try:
+            instance_id = self.get_instance_id(InternetEmulatorServiceInstance)
+        except Exception:
+            print 'cannot get InternetEmulatorServiceInstance'
+            return False
+
+        return True
+
+    # Which scenario does it use among Spirent or NG4T?
+    def get_scenario(self):
+        # try get vENB instance: one of both Spirent and NG4T
+        venb_flag = self.has_venb()
+        vmme_flag = self.has_vmme()
+        sdncontroller_flag = self.has_sdncontroller()
+        vspgwu_flag = self.has_vspgwu()
+        internetemulator_flag = self.has_internetemulator()
+
+        if vmme_flag and venb_flag and sdncontroller_flag and vspgwu_flag and internetemulator_flag:
+            return 'ng4t_with_sdncontroller'
+
+        if vmme_flag and venb_flag and (not sdncontroller_flag) and vspgwu_flag and internetemulator_flag:
+            return 'ng4t_without_sdncontroller'
+
+        if (not vmme_flag) and venb_flag and sdncontroller_flag and vspgwu_flag and (not internetemulator_flag):
+            return 'spirent_with_sdncontroller'
+
+        if (not vmme_flag) and venb_flag and (not sdncontroller_flag) and vspgwu_flag and (
+        not internetemulator_flag):
+            return 'spirent_without_sdncontroller'
+
+        return 'manual'
+
+    def get_ip_address(self, network_name, service_instance, parameter):
+
+        try:
+            net_id = self.get_network_id(network_name)
+            ins_id = self.get_instance_id(service_instance)
+            ip_address = Port.objects.get(network_id=net_id, instance_id=ins_id).ip
+
+        except Exception:
+            ip_address = "error"
+            print "get failed -- %s" % (parameter)
+
+        return ip_address
+
+    # To get each network id
+    def get_network_id(self, network_name):
+        return Network.objects.get(name=network_name).id
+
+    # To get service_instance (assumption: there is a single instance for each service)
+    def get_instance_id(self, serviceinstance):
+        instances = serviceinstance.objects.all()
+        instance_id = instances[0].instance_id
+        return instance_id
\ No newline at end of file