diff --git a/src/emuvim/api/rest/network.py b/src/emuvim/api/rest/network.py
index 63696a0..5375943 100755
--- a/src/emuvim/api/rest/network.py
+++ b/src/emuvim/api/rest/network.py
@@ -54,6 +54,9 @@
     :param bidirectional: boolean value if the link needs to be implemented from src to dst and back
     :param cookie: cookie value, identifier of the flow entry to be installed.
     :param priority: integer indicating the priority of the flow entry
+    :param skip_vlan_tag: boolean to indicate whether a new vlan tag should be created for this chain
+    :param monitor: boolean to indicate whether a new vlan tag should be created for this chain
+    :param monitor_placement: 'tx'=place the monitoring flowrule at the beginning of the chain, 'rx'=place at the end of the chain
     :return: message string indicating if the chain action is succesful or not
     """
 
diff --git a/src/emuvim/dcemulator/net.py b/src/emuvim/dcemulator/net.py
index 3b4dd54..cf85085 100755
--- a/src/emuvim/dcemulator/net.py
+++ b/src/emuvim/dcemulator/net.py
@@ -342,6 +342,17 @@
 
     def _addMonitorFlow(self, vnf_src_name, vnf_dst_name, vnf_src_interface=None, vnf_dst_interface=None,
                        tag=None, **kwargs):
+        """
+        Add a monitoring flow entry that adds a special flowentry/counter at the begin or end of a chain.
+        So this monitoring flowrule exists on top of a previously defined chain rule and uses the same vlan tag/routing.
+        :param vnf_src_name:
+        :param vnf_dst_name:
+        :param vnf_src_interface:
+        :param vnf_dst_interface:
+        :param tag: vlan tag to be used for this chain (same tag as existing chain)
+        :param monitor_placement: 'tx' or 'rx' indicating to place the extra flowentry resp. at the beginning or end of the chain
+        :return:
+        """
 
         src_sw = None
         src_sw_inport_nr = 0
@@ -489,6 +500,8 @@
         :param cookie: cookie for the installed flowrules (can be used later as identifier for a set of installed chains)
         :param match: custom match entry to be added to the flowrules (default: only in_port and vlan tag)
         :param priority: custom flowrule priority
+        :param monitor: boolean to indicate whether this chain is a monitoring chain
+        :param tag: vlan tag to be used for this chain (pre-defined or new one if none is specified)
         :return: output log string
         """