diff --git a/gns3server/handlers/jsonrpc_websocket.py b/gns3server/handlers/jsonrpc_websocket.py
index a22328bb..9bf0fbbc 100644
--- a/gns3server/handlers/jsonrpc_websocket.py
+++ b/gns3server/handlers/jsonrpc_websocket.py
@@ -34,8 +34,8 @@ class JSONRPCWebSocket(tornado.websocket.WebSocketHandler):
     STOMP protocol over Tornado Websockets with message
     routing to ZeroMQ dealer clients.
 
-    :param application: Tornado Application object
-    :param request: Tornado Request object
+    :param application: Tornado Application instance
+    :param request: Tornado Request instance
     :param zmq_router: ZeroMQ router socket
     """
 
diff --git a/gns3server/modules/base.py b/gns3server/modules/base.py
index 2c8105be..7b4f3976 100644
--- a/gns3server/modules/base.py
+++ b/gns3server/modules/base.py
@@ -68,7 +68,7 @@ class IModule(multiprocessing.Process):
         """
         Creates a new ZMQ stream.
 
-        :returns: ZMQ stream object
+        :returns: ZMQ stream instance
         """
 
         socket = self._context.socket(zmq.DEALER)
diff --git a/gns3server/modules/dynamips/adapters/adapter.py b/gns3server/modules/dynamips/adapters/adapter.py
index f54f26f9..b963e334 100644
--- a/gns3server/modules/dynamips/adapters/adapter.py
+++ b/gns3server/modules/dynamips/adapters/adapter.py
@@ -72,7 +72,7 @@ class Adapter(object):
         Installs a WIC on this adapter.
 
         :param wic_slot_id: WIC slot ID (integer)
-        :param wic: WIC object
+        :param wic: WIC instance
         """
 
         self._wics[wic_slot_id] = wic
@@ -110,7 +110,7 @@ class Adapter(object):
         Adds a NIO to a port on this adapter.
 
         :param port_id: port ID (integer)
-        :param nio: NIO object
+        :param nio: NIO instance
         """
 
         self._ports[port_id] = nio
@@ -130,7 +130,7 @@ class Adapter(object):
 
         :params port_id: port ID (integer)
 
-        :returns: NIO object
+        :returns: NIO instance
         """
 
         return self._ports[port_id]
@@ -160,7 +160,7 @@ class Adapter(object):
         """
         Returns the wics adapters inserted in this adapter.
 
-        :returns: list WIC objects
+        :returns: list WIC instances
         """
 
         return self._wics
diff --git a/gns3server/modules/dynamips/backends/atmsw.py b/gns3server/modules/dynamips/backends/atmsw.py
index ff17bd13..df1b44ac 100644
--- a/gns3server/modules/dynamips/backends/atmsw.py
+++ b/gns3server/modules/dynamips/backends/atmsw.py
@@ -41,10 +41,6 @@ class ATMSW(object):
         :param request: JSON request
         """
 
-        if request == None:
-            self.send_param_error()
-            return
-
         #TODO: JSON schema validation for the request
         name = None
         if request and "name" in request:
@@ -137,10 +133,10 @@ class ATMSW(object):
 
         Mandatory request parameters:
         - id (switch identifier)
-        - port_name (port name)
+        - port_id (port identifier)
 
         Response parameters:
-        - port_name (port name)
+        - port_id (port identifier)
         - lhost (local host address)
         - lport (allocated local port)
 
@@ -163,7 +159,7 @@ class ATMSW(object):
             self.send_custom_error(str(e))
             return
 
-        response["port_name"] = request["port_name"]
+        response["port_id"] = request["port_id"]
         self.send_response(response)
 
     @IModule.route("dynamips.atmsw.add_nio")
@@ -174,6 +170,7 @@ class ATMSW(object):
         Mandatory request parameters:
         - id (switch identifier)
         - port (port identifier)
+        - port_id (port identifier)
         - mappings (VCs/VPs mapped to the port)
         - nio (nio type, one of the following)
             - "NIO_UDP"
diff --git a/gns3server/modules/dynamips/backends/ethhub.py b/gns3server/modules/dynamips/backends/ethhub.py
index 05e3ae23..bcb32158 100644
--- a/gns3server/modules/dynamips/backends/ethhub.py
+++ b/gns3server/modules/dynamips/backends/ethhub.py
@@ -40,10 +40,6 @@ class ETHHUB(object):
         :param request: JSON request
         """
 
-        if request == None:
-            self.send_param_error()
-            return
-
         #TODO: JSON schema validation for the request
         name = None
         if request and "name" in request:
@@ -136,10 +132,10 @@ class ETHHUB(object):
 
         Mandatory request parameters:
         - id (hub identifier)
-        - port_name (port name)
+        - port_id (port identifier)
 
         Response parameters:
-        - port_name (port name)
+        - port_id (port identifier)
         - lhost (local host address)
         - lport (allocated local port)
 
@@ -162,7 +158,7 @@ class ETHHUB(object):
             self.send_custom_error(str(e))
             return
 
-        response["port_name"] = request["port_name"]
+        response["port_id"] = request["port_id"]
         self.send_response(response)
 
     @IModule.route("dynamips.ethhub.add_nio")
@@ -173,6 +169,7 @@ class ETHHUB(object):
         Mandatory request parameters:
         - id (hub identifier)
         - port (port identifier)
+        - port_id (port identifier)
         - nio (nio type, one of the following)
             - "NIO_UDP"
                 - lport (local port)
diff --git a/gns3server/modules/dynamips/backends/ethsw.py b/gns3server/modules/dynamips/backends/ethsw.py
index cf9ba5fe..387955e1 100644
--- a/gns3server/modules/dynamips/backends/ethsw.py
+++ b/gns3server/modules/dynamips/backends/ethsw.py
@@ -40,10 +40,6 @@ class ETHSW(object):
         :param request: JSON request
         """
 
-        if request == None:
-            self.send_param_error()
-            return
-
         #TODO: JSON schema validation for the request
         name = None
         if request and "name" in request:
@@ -153,10 +149,10 @@ class ETHSW(object):
 
         Mandatory request parameters:
         - id (switch identifier)
-        - port_name (port name)
+        - port_id (port identifier)
 
         Response parameters:
-        - port_name (port name)
+        - port_id (port identifier)
         - lhost (local host address)
         - lport (allocated local port)
 
@@ -179,7 +175,7 @@ class ETHSW(object):
             self.send_custom_error(str(e))
             return
 
-        response["port_name"] = request["port_name"]
+        response["port_id"] = request["port_id"]
         self.send_response(response)
 
     @IModule.route("dynamips.ethsw.add_nio")
@@ -190,6 +186,7 @@ class ETHSW(object):
         Mandatory request parameters:
         - id (switch identifier)
         - port (port identifier)
+        - port_id (port identifier)
         - vlan (vlan identifier)
         - port_type ("access", "dot1q" or "qinq")
         - nio (nio type, one of the following)
diff --git a/gns3server/modules/dynamips/backends/frsw.py b/gns3server/modules/dynamips/backends/frsw.py
index c6cd039c..ebe912ab 100644
--- a/gns3server/modules/dynamips/backends/frsw.py
+++ b/gns3server/modules/dynamips/backends/frsw.py
@@ -40,10 +40,6 @@ class FRSW(object):
         :param request: JSON request
         """
 
-        if request == None:
-            self.send_param_error()
-            return
-
         #TODO: JSON schema validation for the request
         name = None
         if request and "name" in request:
@@ -135,10 +131,10 @@ class FRSW(object):
 
         Mandatory request parameters:
         - id (switch identifier)
-        - port_name (port name)
+        - port_id (port identifier)
 
         Response parameters:
-        - port_name (port name)
+        - port_id (port identifier)
         - lhost (local host address)
         - lport (allocated local port)
 
@@ -161,7 +157,7 @@ class FRSW(object):
             self.send_custom_error(str(e))
             return
 
-        response["port_name"] = request["port_name"]
+        response["port_id"] = request["port_id"]
         self.send_response(response)
 
     @IModule.route("dynamips.frsw.add_nio")
@@ -172,6 +168,7 @@ class FRSW(object):
         Mandatory request parameters:
         - id (switch identifier)
         - port (port identifier)
+        - port_id (port identifier)
         - mappings (VCs mapped to the port)
         - nio (nio type, one of the following)
             - "NIO_UDP"
diff --git a/gns3server/modules/dynamips/backends/vm.py b/gns3server/modules/dynamips/backends/vm.py
index 7d1189c7..14cfa9fb 100644
--- a/gns3server/modules/dynamips/backends/vm.py
+++ b/gns3server/modules/dynamips/backends/vm.py
@@ -445,10 +445,10 @@ class VM(object):
 
         Mandatory request parameters:
         - id (vm identifier)
-        - port_name (port name e.g fastEthernet1/0)
+        - port_id (unique port identifier)
 
         Response parameters:
-        - port_name (port name e.g fastEthernet1/0)
+        - port_id (unique port identifier)
         - lhost (local host address)
         - lport (allocated local port)
 
@@ -471,7 +471,7 @@ class VM(object):
             self.send_custom_error(str(e))
             return
 
-        response["port_name"] = request["port_name"]
+        response["port_id"] = request["port_id"]
         self.send_response(response)
 
     @IModule.route("dynamips.vm.add_nio")
@@ -481,8 +481,9 @@ class VM(object):
 
         Mandatory request parameters:
         - id (vm identifier)
-        - slot (slot identifier)
-        - port (port identifier)
+        - slot (slot number)
+        - port (port number)
+        - port_id (unique port identifier)
         - nio (nio type, one of the following)
             - "NIO_UDP"
                 - lport (local port)
diff --git a/gns3server/modules/dynamips/dynamips_hypervisor.py b/gns3server/modules/dynamips/dynamips_hypervisor.py
index 98ab67f2..8ad17a90 100644
--- a/gns3server/modules/dynamips/dynamips_hypervisor.py
+++ b/gns3server/modules/dynamips/dynamips_hypervisor.py
@@ -158,7 +158,7 @@ class DynamipsHypervisor(object):
 
     def save_config(self, filename):
         """
-        Saves the configuration of all Dynamips objects into the specified file.
+        Saves the configuration of all Dynamips instances into the specified file.
 
         :param filename: path string
         """
@@ -181,7 +181,7 @@ class DynamipsHypervisor(object):
         """
         Returns the current socket used to communicate with this hypervisor.
 
-        :returns: socket object
+        :returns: socket instance
         """
 
         assert self._socket
@@ -192,7 +192,7 @@ class DynamipsHypervisor(object):
         """
         Returns the list of devices managed by this hypervisor instance.
 
-        :returns: a list of device objects
+        :returns: a list of device instances
         """
 
         return self._devices
@@ -287,7 +287,7 @@ class DynamipsHypervisor(object):
         Adds a ghost name to the list of ghosts created on this hypervisor.
 
         :param image_name: name of the ghost image
-        :param router: router object
+        :param router: Router instance
         """
 
         self._ghosts[image_name] = router
@@ -344,10 +344,8 @@ class DynamipsHypervisor(object):
 
         #FIXME: better check for IPv6
         start_port = self._current_udp_port
-        print("start port = {}".format(start_port))
         end_port = start_port + max_port
         for port in range(start_port, end_port):
-            print(port)
             if port > end_port:
                 raise DynamipsError("Could not find a free port between {0} and {1}".format(start_port, max_port))
             try:
@@ -360,7 +358,6 @@ class DynamipsHypervisor(object):
                 s.bind((self._host, port))
                 #FIXME: increment?
                 self._current_udp_port += 1
-                print("current port = {}".format(self._current_udp_port))
                 return port
             except socket.error as e:
                 if e.errno == errno.EADDRINUSE:  # socket already in use
diff --git a/gns3server/modules/dynamips/hypervisor_manager.py b/gns3server/modules/dynamips/hypervisor_manager.py
index 9eadf034..7ed84f68 100644
--- a/gns3server/modules/dynamips/hypervisor_manager.py
+++ b/gns3server/modules/dynamips/hypervisor_manager.py
@@ -81,7 +81,7 @@ class HypervisorManager(object):
         """
         Returns all hypervisor instances.
 
-        :returns: list of hypervisor objects
+        :returns: list of hypervisor instances
         """
 
         return self._hypervisors
@@ -430,7 +430,7 @@ class HypervisorManager(object):
         """
         Creates a new Dynamips process and start it.
 
-        :returns: the new hypervisor object
+        :returns: the new hypervisor instance
         """
 
         hypervisor = Hypervisor(self._path,
@@ -461,7 +461,7 @@ class HypervisorManager(object):
         :param router_ios_image: IOS image name
         :param router_ram: amount of RAM (integer)
 
-        :returns: the allocated hypervisor object
+        :returns: the allocated hypervisor instance
         """
 
         # allocate an hypervisor for each router by default
@@ -490,7 +490,7 @@ class HypervisorManager(object):
         """
         Unallocates a Dynamips hypervisor for a specific router.
 
-        :param router: router object
+        :param router: Router instance
         """
 
         hypervisor = router.hypervisor
@@ -512,7 +512,7 @@ class HypervisorManager(object):
         """
         Allocates a Dynamips hypervisor for a specific Dynamips simulated device.
 
-        :returns: the allocated hypervisor object
+        :returns: the allocated hypervisor instance
         """
 
         # For now always allocate the first hypervisor available,
@@ -528,7 +528,7 @@ class HypervisorManager(object):
         """
         Unallocates a Dynamips hypervisor for a specific Dynamips simulated device.
 
-        :param device: device object
+        :param device: device instance
         """
 
         hypervisor = device.hypervisor
diff --git a/gns3server/modules/dynamips/nios/nio.py b/gns3server/modules/dynamips/nios/nio.py
index fd00af61..f27b7e73 100644
--- a/gns3server/modules/dynamips/nios/nio.py
+++ b/gns3server/modules/dynamips/nios/nio.py
@@ -30,7 +30,7 @@ class NIO(object):
     """
     Base NIO class
 
-    :param hypervisor: Dynamips hypervisor object
+    :param hypervisor: Dynamips hypervisor instance
     """
 
     def __init__(self, hypervisor):
diff --git a/gns3server/modules/dynamips/nios/nio_fifo.py b/gns3server/modules/dynamips/nios/nio_fifo.py
index 6ddf5c8c..a67f863d 100644
--- a/gns3server/modules/dynamips/nios/nio_fifo.py
+++ b/gns3server/modules/dynamips/nios/nio_fifo.py
@@ -29,7 +29,7 @@ class NIO_FIFO(NIO):
     """
     Dynamips FIFO NIO.
 
-    :param hypervisor: Dynamips hypervisor object
+    :param hypervisor: Dynamips hypervisor instance
     """
 
     _instance_count = 0
@@ -59,7 +59,7 @@ class NIO_FIFO(NIO):
         """
         Establishes a cross-connect between this FIFO NIO and another one.
 
-        :param nio: FIFO NIO object.
+        :param nio: FIFO NIO instance
         """
 
         self._hypervisor.send("nio crossconnect_fifo {name} {nio}".format(name=self._name,
diff --git a/gns3server/modules/dynamips/nios/nio_generic_ethernet.py b/gns3server/modules/dynamips/nios/nio_generic_ethernet.py
index 928da378..58e6ec7f 100644
--- a/gns3server/modules/dynamips/nios/nio_generic_ethernet.py
+++ b/gns3server/modules/dynamips/nios/nio_generic_ethernet.py
@@ -29,7 +29,7 @@ class NIO_GenericEthernet(NIO):
     """
     Dynamips generic Ethernet NIO.
 
-    :param hypervisor: Dynamips hypervisor object
+    :param hypervisor: Dynamips hypervisor instance
     :param ethernet_device: Ethernet device name (e.g. eth0)
     """
 
diff --git a/gns3server/modules/dynamips/nios/nio_linux_ethernet.py b/gns3server/modules/dynamips/nios/nio_linux_ethernet.py
index da44ebdf..a199c264 100644
--- a/gns3server/modules/dynamips/nios/nio_linux_ethernet.py
+++ b/gns3server/modules/dynamips/nios/nio_linux_ethernet.py
@@ -29,7 +29,7 @@ class NIO_LinuxEthernet(NIO):
     """
     Dynamips Linux Ethernet NIO.
 
-    :param hypervisor: Dynamips hypervisor object
+    :param hypervisor: Dynamips hypervisor instance
     :param ethernet_device: Ethernet device name (e.g. eth0)
     """
 
diff --git a/gns3server/modules/dynamips/nios/nio_mcast.py b/gns3server/modules/dynamips/nios/nio_mcast.py
index c16f9cff..4d939d5a 100644
--- a/gns3server/modules/dynamips/nios/nio_mcast.py
+++ b/gns3server/modules/dynamips/nios/nio_mcast.py
@@ -29,7 +29,7 @@ class NIO_Mcast(NIO):
     """
     Dynamips Linux Ethernet NIO.
 
-    :param hypervisor: Dynamips hypervisor object
+    :param hypervisor: Dynamips hypervisor instance
     :param group: multicast group to bind
     :param port: port for binding
     """
diff --git a/gns3server/modules/dynamips/nios/nio_null.py b/gns3server/modules/dynamips/nios/nio_null.py
index 379fe2a3..b9350c07 100644
--- a/gns3server/modules/dynamips/nios/nio_null.py
+++ b/gns3server/modules/dynamips/nios/nio_null.py
@@ -29,7 +29,7 @@ class NIO_Null(NIO):
     """
     Dynamips NULL NIO.
 
-    :param hypervisor: Dynamips hypervisor object
+    :param hypervisor: Dynamips hypervisor instance
     """
 
     _instance_count = 0
diff --git a/gns3server/modules/dynamips/nios/nio_tap.py b/gns3server/modules/dynamips/nios/nio_tap.py
index ffaf6d56..9ee16abb 100644
--- a/gns3server/modules/dynamips/nios/nio_tap.py
+++ b/gns3server/modules/dynamips/nios/nio_tap.py
@@ -29,7 +29,7 @@ class NIO_TAP(NIO):
     """
     Dynamips TAP NIO.
 
-    :param hypervisor: Dynamips hypervisor object
+    :param hypervisor: Dynamips hypervisor instance
     :param tap_device: TAP device name (e.g. tap0)
     """
 
diff --git a/gns3server/modules/dynamips/nios/nio_udp.py b/gns3server/modules/dynamips/nios/nio_udp.py
index 9005c3c6..bcfd9e4d 100644
--- a/gns3server/modules/dynamips/nios/nio_udp.py
+++ b/gns3server/modules/dynamips/nios/nio_udp.py
@@ -29,7 +29,7 @@ class NIO_UDP(NIO):
     """
     Dynamips UDP NIO.
 
-    :param hypervisor: Dynamips hypervisor object
+    :param hypervisor: Dynamips hypervisor instance
     :param lport: local port number
     :param rhost: remote address/host
     :param rport: remote port number
diff --git a/gns3server/modules/dynamips/nios/nio_udp_auto.py b/gns3server/modules/dynamips/nios/nio_udp_auto.py
index a8a9f70a..ccefce2b 100644
--- a/gns3server/modules/dynamips/nios/nio_udp_auto.py
+++ b/gns3server/modules/dynamips/nios/nio_udp_auto.py
@@ -29,7 +29,7 @@ class NIO_UDP_auto(NIO):
     """
     Dynamips auto UDP NIO.
 
-    :param hypervisor: Dynamips hypervisor object
+    :param hypervisor: Dynamips hypervisor instance
     :param laddr: local address
     :param lport_start: start local port range
     :param lport_end: end local port range
diff --git a/gns3server/modules/dynamips/nios/nio_unix.py b/gns3server/modules/dynamips/nios/nio_unix.py
index 07e6df68..f699eead 100644
--- a/gns3server/modules/dynamips/nios/nio_unix.py
+++ b/gns3server/modules/dynamips/nios/nio_unix.py
@@ -29,7 +29,7 @@ class NIO_UNIX(NIO):
     """
     Dynamips UNIX NIO.
 
-    :param hypervisor: Dynamips hypervisor object
+    :param hypervisor: Dynamips hypervisor instance
     :param local_file: local UNIX socket filename
     :param remote_file: remote UNIX socket filename
     """
diff --git a/gns3server/modules/dynamips/nios/nio_vde.py b/gns3server/modules/dynamips/nios/nio_vde.py
index e8f14e9c..79af96d7 100644
--- a/gns3server/modules/dynamips/nios/nio_vde.py
+++ b/gns3server/modules/dynamips/nios/nio_vde.py
@@ -29,7 +29,7 @@ class NIO_VDE(NIO):
     """
     Dynamips VDE NIO.
 
-    :param hypervisor: Dynamips hypervisor object
+    :param hypervisor: Dynamips hypervisor instance
     :param control_file: VDE control filename
     :param local_file: VDE local filename
     """
diff --git a/gns3server/modules/dynamips/nodes/atm_bridge.py b/gns3server/modules/dynamips/nodes/atm_bridge.py
index b2f41691..c98975f8 100644
--- a/gns3server/modules/dynamips/nodes/atm_bridge.py
+++ b/gns3server/modules/dynamips/nodes/atm_bridge.py
@@ -28,7 +28,7 @@ class ATMBridge(object):
     """
     Dynamips bridge switch.
 
-    :param hypervisor: Dynamips hypervisor object
+    :param hypervisor: Dynamips hypervisor instance
     :param name: name for this switch
     """
 
@@ -69,7 +69,7 @@ class ATMBridge(object):
         """
         Returns the current hypervisor.
 
-        :returns: hypervisor object
+        :returns: hypervisor instance
         """
 
         return self._hypervisor
@@ -115,7 +115,7 @@ class ATMBridge(object):
         """
         Adds a NIO as new port on ATM bridge.
 
-        :param nio: NIO object to add
+        :param nio: NIO instance to add
         :param port: port to allocate for the NIO
         """
 
diff --git a/gns3server/modules/dynamips/nodes/atm_switch.py b/gns3server/modules/dynamips/nodes/atm_switch.py
index b68dea6a..d4431a46 100644
--- a/gns3server/modules/dynamips/nodes/atm_switch.py
+++ b/gns3server/modules/dynamips/nodes/atm_switch.py
@@ -31,7 +31,7 @@ class ATMSwitch(object):
     """
     Dynamips ATM switch.
 
-    :param hypervisor: Dynamips hypervisor object
+    :param hypervisor: Dynamips hypervisor instance
     :param name: name for this switch
     """
 
@@ -121,7 +121,7 @@ class ATMSwitch(object):
         """
         Returns the current hypervisor.
 
-        :returns: hypervisor object
+        :returns: hypervisor instance
         """
 
         return self._hypervisor
@@ -182,7 +182,7 @@ class ATMSwitch(object):
         """
         Adds a NIO as new port on ATM switch.
 
-        :param nio: NIO object to add
+        :param nio: NIO instance to add
         :param port: port to allocate for the NIO
         """
 
diff --git a/gns3server/modules/dynamips/nodes/bridge.py b/gns3server/modules/dynamips/nodes/bridge.py
index ffa1e51d..1a4ae08d 100644
--- a/gns3server/modules/dynamips/nodes/bridge.py
+++ b/gns3server/modules/dynamips/nodes/bridge.py
@@ -27,7 +27,7 @@ class Bridge(object):
     """
     Dynamips bridge.
 
-    :param hypervisor: Dynamips hypervisor object
+    :param hypervisor: Dynamips hypervisor instance
     :param name: name for this bridge
     """
 
@@ -73,7 +73,7 @@ class Bridge(object):
         """
         Returns the current hypervisor.
 
-        :returns: hypervisor object
+        :returns: hypervisor instance
         """
 
         return self._hypervisor
@@ -110,7 +110,7 @@ class Bridge(object):
         """
         Adds a NIO as new port on this bridge.
 
-        :param nio: NIO object to add
+        :param nio: NIO instance to add
         """
 
         self._hypervisor.send("nio_bridge add_nio {name} {nio}".format(name=self._name,
@@ -121,7 +121,7 @@ class Bridge(object):
         """
         Removes the specified NIO as member of this bridge.
 
-        :param nio: NIO object to remove
+        :param nio: NIO instance to remove
         """
 
         self._hypervisor.send("nio_bridge remove_nio {name} {nio}".format(name=self._name,
diff --git a/gns3server/modules/dynamips/nodes/c1700.py b/gns3server/modules/dynamips/nodes/c1700.py
index 154f963f..0943a9c2 100644
--- a/gns3server/modules/dynamips/nodes/c1700.py
+++ b/gns3server/modules/dynamips/nodes/c1700.py
@@ -33,7 +33,7 @@ class C1700(Router):
     """
     Dynamips c1700 router.
 
-    :param hypervisor: Dynamips hypervisor object
+    :param hypervisor: Dynamips hypervisor instance
     :param name: name for this router
     :param chassis: chassis for this router:
     1720, 1721, 1750, 1751 or 1760 (default = 1720).
diff --git a/gns3server/modules/dynamips/nodes/c2600.py b/gns3server/modules/dynamips/nodes/c2600.py
index a110a928..bc961d2c 100644
--- a/gns3server/modules/dynamips/nodes/c2600.py
+++ b/gns3server/modules/dynamips/nodes/c2600.py
@@ -35,7 +35,7 @@ class C2600(Router):
     """
     Dynamips c2600 router.
 
-    :param hypervisor: Dynamips hypervisor object
+    :param hypervisor: Dynamips hypervisor instance
     :param name: name for this router
     :param chassis: chassis for this router:
     2610, 2611, 2620, 2621, 2610XM, 2611XM
diff --git a/gns3server/modules/dynamips/nodes/c2691.py b/gns3server/modules/dynamips/nodes/c2691.py
index 75944c8e..f846f1ac 100644
--- a/gns3server/modules/dynamips/nodes/c2691.py
+++ b/gns3server/modules/dynamips/nodes/c2691.py
@@ -32,7 +32,7 @@ class C2691(Router):
     """
     Dynamips c2691 router.
 
-    :param hypervisor: Dynamips hypervisor object
+    :param hypervisor: Dynamips hypervisor instance
     :param name: name for this router
     """
 
diff --git a/gns3server/modules/dynamips/nodes/c3600.py b/gns3server/modules/dynamips/nodes/c3600.py
index e115e507..62230829 100644
--- a/gns3server/modules/dynamips/nodes/c3600.py
+++ b/gns3server/modules/dynamips/nodes/c3600.py
@@ -32,7 +32,7 @@ class C3600(Router):
     """
     Dynamips c3600 router.
 
-    :param hypervisor: Dynamips hypervisor object
+    :param hypervisor: Dynamips hypervisor instance
     :param name: name for this router
     :param chassis: chassis for this router:
     3620, 3640 or 3660 (default = 3640).
diff --git a/gns3server/modules/dynamips/nodes/c3725.py b/gns3server/modules/dynamips/nodes/c3725.py
index 84bfa7dc..d1bb39dc 100644
--- a/gns3server/modules/dynamips/nodes/c3725.py
+++ b/gns3server/modules/dynamips/nodes/c3725.py
@@ -32,7 +32,7 @@ class C3725(Router):
     """
     Dynamips c3725 router.
 
-    :param hypervisor: Dynamips hypervisor object
+    :param hypervisor: Dynamips hypervisor instance
     :param name: name for this router
     """
 
diff --git a/gns3server/modules/dynamips/nodes/c3745.py b/gns3server/modules/dynamips/nodes/c3745.py
index aab03208..db6d69bb 100644
--- a/gns3server/modules/dynamips/nodes/c3745.py
+++ b/gns3server/modules/dynamips/nodes/c3745.py
@@ -32,7 +32,7 @@ class C3745(Router):
     """
     Dynamips c3745 router.
 
-    :param hypervisor: Dynamips hypervisor object
+    :param hypervisor: Dynamips hypervisor instance
     :param name: name for this router
     """
 
diff --git a/gns3server/modules/dynamips/nodes/c7200.py b/gns3server/modules/dynamips/nodes/c7200.py
index 47b54999..7164e3b5 100644
--- a/gns3server/modules/dynamips/nodes/c7200.py
+++ b/gns3server/modules/dynamips/nodes/c7200.py
@@ -34,7 +34,7 @@ class C7200(Router):
     """
     Dynamips c7200 router (model is 7206).
 
-    :param hypervisor: Dynamips hypervisor object
+    :param hypervisor: Dynamips hypervisor instance
     :param name: name for this router
     :param npe: default NPE
     """
diff --git a/gns3server/modules/dynamips/nodes/ethernet_switch.py b/gns3server/modules/dynamips/nodes/ethernet_switch.py
index 74d4d86c..3b7379bf 100644
--- a/gns3server/modules/dynamips/nodes/ethernet_switch.py
+++ b/gns3server/modules/dynamips/nodes/ethernet_switch.py
@@ -32,7 +32,7 @@ class EthernetSwitch(object):
     """
     Dynamips Ethernet switch.
 
-    :param hypervisor: Dynamips hypervisor object
+    :param hypervisor: Dynamips hypervisor instance
     :param name: name for this switch
     """
 
@@ -122,7 +122,7 @@ class EthernetSwitch(object):
         """
         Returns the current hypervisor.
 
-        :returns: hypervisor object
+        :returns: hypervisor instance
         """
 
         return self._hypervisor
@@ -172,7 +172,7 @@ class EthernetSwitch(object):
         """
         Adds a NIO as new port on Ethernet switch.
 
-        :param nio: NIO object to add
+        :param nio: NIO instance to add
         :param port: port to allocate for the NIO
         """
 
diff --git a/gns3server/modules/dynamips/nodes/frame_relay_switch.py b/gns3server/modules/dynamips/nodes/frame_relay_switch.py
index 0776e61a..0c25c060 100644
--- a/gns3server/modules/dynamips/nodes/frame_relay_switch.py
+++ b/gns3server/modules/dynamips/nodes/frame_relay_switch.py
@@ -31,7 +31,7 @@ class FrameRelaySwitch(object):
     """
     Dynamips Frame Relay switch.
 
-    :param hypervisor: Dynamips hypervisor object
+    :param hypervisor: Dynamips hypervisor instance
     :param name: name for this switch
     """
 
@@ -121,7 +121,7 @@ class FrameRelaySwitch(object):
         """
         Returns the current hypervisor.
 
-        :returns: hypervisor object
+        :returns: hypervisor instance
         """
 
         return self._hypervisor
@@ -182,7 +182,7 @@ class FrameRelaySwitch(object):
         """
         Adds a NIO as new port on Frame Relay switch.
 
-        :param nio: NIO object to add
+        :param nio: NIO instance to add
         :param port: port to allocate for the NIO
         """
 
diff --git a/gns3server/modules/dynamips/nodes/hub.py b/gns3server/modules/dynamips/nodes/hub.py
index 2cf943bd..2d52fa7f 100644
--- a/gns3server/modules/dynamips/nodes/hub.py
+++ b/gns3server/modules/dynamips/nodes/hub.py
@@ -31,7 +31,7 @@ class Hub(Bridge):
     """
     Dynamips hub (based on Bridge)
 
-    :param hypervisor: Dynamips hypervisor object
+    :param hypervisor: Dynamips hypervisor instance
     :param name: name for this hub
     """
 
@@ -102,7 +102,7 @@ class Hub(Bridge):
         """
         Adds a NIO as new port on this hub.
 
-        :param nio: NIO object to add
+        :param nio: NIO instance to add
         :param port: port to allocate for the NIO
         """
 
diff --git a/gns3server/modules/dynamips/nodes/router.py b/gns3server/modules/dynamips/nodes/router.py
index 88ab62f7..7c5216ac 100644
--- a/gns3server/modules/dynamips/nodes/router.py
+++ b/gns3server/modules/dynamips/nodes/router.py
@@ -34,7 +34,7 @@ class Router(object):
     """
     Dynamips router implementation.
 
-    :param hypervisor: Dynamips hypervisor object
+    :param hypervisor: Dynamips hypervisor instance
     :param name: name for this router
     :param platform: c7200, c3745, c3725, c3600, c2691, c2600 or c1700
     :param ghost_flag: used when creating a ghost IOS.
@@ -221,7 +221,7 @@ class Router(object):
         """
         Returns the current hypervisor.
 
-        :returns: hypervisor object
+        :returns: hypervisor instance
         """
 
         return self._hypervisor
@@ -1102,7 +1102,7 @@ class Router(object):
         Adds a slot binding (a module into a slot).
 
         :param slot_id: slot ID
-        :param adapter: device to add in the corresponding slot (object)
+        :param adapter: device to add in the corresponding slot
         """
 
         try:
@@ -1186,7 +1186,7 @@ class Router(object):
         Installs a WIC adapter into this router.
 
         :param wic_slot_id: WIC slot ID
-        :param wic: WIC to be install (object)
+        :param wic: WIC to be installed
         """
 
         # WICs are always installed on adapters in slot 0
@@ -1271,7 +1271,7 @@ class Router(object):
 
         :param slot_id: slot ID
         :param port_id: port ID
-        :param nio: NIO to add to the slot/port (object)
+        :param nio: NIO instance to add to the slot/port
         """
 
         try:
@@ -1304,7 +1304,7 @@ class Router(object):
         :param slot_id: slot ID
         :param port_id: port ID
 
-        :returns: removed NIO object
+        :returns: removed NIO instance
         """
 
         try: