diff --git a/FofbTool/Operation.py b/FofbTool/Operation.py
index 21ceaae4c5304604b710fdbbee051ef36d79832a..33e9a2e371153be2073223e0a30418ba508f760d 100644
--- a/FofbTool/Operation.py
+++ b/FofbTool/Operation.py
@@ -170,6 +170,9 @@ def start_ccn(nodename):
         return
 
     logger.info("Starting CCN on {}".format(nodename))
+
+    ack_ccn(nodename)
+
     nint=1
     if 'central' in nodename:
         nint = 4
@@ -292,6 +295,9 @@ def stop_comlbp(cellnodename):
         return
 
     logger.info("Stopping ComLBP on {}".format(cellnodename))
+    for n in range(4):
+        prx["comlbp{}_control".format(n)] = 1
+    time.sleep(1)
     for n in range(4):
         prx["comlbp{}_control".format(n)] = 0