diff --git a/src/emuvim/api/zerorpc/compute.py b/src/emuvim/api/zerorpc/compute.py
index 7b6c1d4..38b0a06 100644
--- a/src/emuvim/api/zerorpc/compute.py
+++ b/src/emuvim/api/zerorpc/compute.py
@@ -56,9 +56,9 @@
     def __init__(self, dcs):
         self.dcs = dcs
 
-    def compute_action_start(self, dc_label, compute_name, image, network=None, command=None):
+    def compute_action_start(self, dc_label, compute_name, image, network, command):
         """
-        Start a new compute instance: A docker container
+        Start a new compute instance: A docker container (note: zerorpc does not support keyword arguments)
         :param dc_label: name of the DC
         :param compute_name: compute container name
         :param image: image name
@@ -68,6 +68,7 @@
         """
         # TODO what to return UUID / given name / internal name ?
         logging.debug("RPC CALL: compute start")
+        logging.info('nwlist2: {0}'.format(network))
         try:
             c = self.dcs.get(dc_label).startCompute(
                 compute_name, image=image, command=command, network=network)
@@ -113,6 +114,21 @@
             logging.exception("RPC error.")
             return ex.message
 
+    def compute_profile(self, dc_label, compute_name, image, kwargs):
+        # note: zerorpc does not support keyword arguments
+
+        # start vnf
+        vnf_status = self.compute_action_start(self, dc_label, compute_name, image,
+                                  kwargs.get('network'),
+                                  kwargs.get('command'))
+
+        # start traffic source (with fixed ip addres, no use for now...)
+        self.compute_action_start(self, dc_label, 'psrc', 'profile_source', [{'id':'output','ip':'10.0.10.1/24'}], None)
+
+
+
+
+
     def datacenter_list(self):
         logging.debug("RPC CALL: datacenter list")
         try:
@@ -128,3 +144,10 @@
         except Exception as ex:
             logging.exception("RPC error.")
             return ex.message
+
+'''
+if __name__ == "__main__":
+    test = MultiDatacenterApi({})
+    test.compute_profile('dc1','vnf1', 'image',network='',command='test',other='other')
+'''
+
diff --git a/src/emuvim/api/zerorpc/network.py b/src/emuvim/api/zerorpc/network.py
index 116d13b..b1e5d41 100644
--- a/src/emuvim/api/zerorpc/network.py
+++ b/src/emuvim/api/zerorpc/network.py
@@ -117,3 +117,5 @@
             logging.exception("RPC error.")
             return ex.message
 
+
+
diff --git a/src/emuvim/cli/compute.py b/src/emuvim/cli/compute.py
index f2fdc62..6423917 100755
--- a/src/emuvim/cli/compute.py
+++ b/src/emuvim/cli/compute.py
@@ -31,12 +31,14 @@
         if args.get("network") is not None:
             nw_list = self._parse_network(args.get("network"))
 
+        pp.pprint('nwlist1: {0}'.format(nw_list))
+
         r = self.c.compute_action_start(
             args.get("datacenter"),
             args.get("name"),
             args.get("image"),
-            network=nw_list,
-            command=args.get("docker_command")
+            nw_list,
+            args.get("docker_command")
             )
         pp.pprint(r)
 
@@ -79,6 +81,22 @@
             args.get("datacenter"), args.get("name"))
         pp.pprint(r)
 
+    def profile(self, args):
+        nw_list = list()
+        if args.get("network") is not None:
+            nw_list = self._parse_network(args.get("network"))
+            logging.info('nwlist: {0}'.format(nw_list))
+        r = self.c.compute_profile(
+            args.get("datacenter"),
+            args.get("name"),
+            args.get("image"),
+            network=nw_list,
+            command=args.get("docker_command"),
+            input=args.get("input"),
+            output=args.get("output")
+        )
+        pp.pprint(r)
+
     def _parse_network(self, network_str):
         '''
         parse the options for all network interfaces of the vnf
@@ -116,6 +134,12 @@
     "--net", dest="network",
     help="Network properties of compute instance e.g. \
           '10.0.0.123/8' or '10.0.0.123/8,11.0.0.123/24' for multiple interfaces.")
+parser.add_argument(
+    "--input", "-in", dest="input",
+    help="input interface of the vnf to profile")
+parser.add_argument(
+    "--output", "-out", dest="output",
+    help="output interface of the vnf to profile")
 
 
 def main(argv):
diff --git a/src/emuvim/cli/monitor.py b/src/emuvim/cli/monitor.py
index 14cce08..3b667f7 100755
--- a/src/emuvim/cli/monitor.py
+++ b/src/emuvim/cli/monitor.py
@@ -69,6 +69,7 @@
     "--metric", "-m", dest="metric",
     help="tx_bytes, rx_bytes, tx_packets, rx_packets")
 
+
 def main(argv):
     #print "This is the son-emu monitor CLI."
     #print "Arguments: %s" % str(argv)
diff --git a/src/emuvim/dcemulator/node.py b/src/emuvim/dcemulator/node.py
index 41da627..2943b6d 100755
--- a/src/emuvim/dcemulator/node.py
+++ b/src/emuvim/dcemulator/node.py
@@ -167,8 +167,10 @@
         # connect all given networks
         # if no --net option is given, network = [{}], so 1 empty dict in the list
         # this results in 1 default interface with a default ip address
+        logging.info('nwlist: {0}'.format(network))
         for nw in network:
             # TODO we cannot use TCLink here (see: https://github.com/mpeuster/dockernet/issues/3)
+            logging.info('nw: {0}'.format(nw))
             self.net.addLink(d, self.switch, params1=nw, cls=Link)
         # do bookkeeping
         self.containers[name] = d