diff --git a/src/mpConfig.py b/src/mpConfig.py
index 315fa85..ec6900a 100644
--- a/src/mpConfig.py
+++ b/src/mpConfig.py
@@ -1,5 +1,5 @@
 class MpConfig:
-	
+
 	PING_OUTPUT = "ping.log"
 
 	def __init__(self, topo, param):
@@ -63,7 +63,7 @@ class MpConfig:
 		s = "ip route add default via " + via
 		print(s)
 		return s
-	
+
 	def pingCommand(self, fromIP, toIP, n=5):
 		s = "ping -c " + str(n) + " -I " + fromIP + " " + toIP + \
 				" >> " + MpConfig.PING_OUTPUT
diff --git a/src/mpECMPSingleInterfaceConfig.py b/src/mpECMPSingleInterfaceConfig.py
index 74c9886..215b4bf 100644
--- a/src/mpECMPSingleInterfaceConfig.py
+++ b/src/mpECMPSingleInterfaceConfig.py
@@ -24,23 +24,23 @@ class MpECMPSingleInterfaceConfig(MpConfig):
 			cmd = self.getIpRuleCmd(i)
 			self.topo.commandTo(self.client, cmd)
 			self.topo.commandTo(self.server, cmd)
-			
+
 			cmd = self.getDefaultRouteCmd(self.getRouterIPClient(i),
 					i)
 			self.topo.commandTo(self.client, cmd)
 			cmd = self.getDefaultRouteCmd(self.getRouterIPServer(i),
 					i)
 			self.topo.commandTo(self.server, cmd)
-			
+
 			i = i + 1
-		
+
 		###
 		cmd = self.addRouteDefaultSimple(self.getRouterIPServer(0))
 		self.topo.commandTo(self.server, cmd)
-		
+
 		cmd = self.addRouteDefaultSimple(self.getRouterIPClient(0))
 		self.topo.commandTo(self.client, cmd)
-		
+
 		self.topo.commandTo(self.client, "ip route flush cache")
 		self.topo.commandTo(self.server, "ip route flush cache")
 
@@ -63,7 +63,7 @@ class MpECMPSingleInterfaceConfig(MpConfig):
 				'" -j MARK --set-mark ' + str(id + 1)
 		print (s)
 		return s
-	
+
 	def getIptableRuleTCPPortServer(self, mask, id):
 		s = 'iptables -t mangle -A OUTPUT -m u32 --u32 ' + \
 				'"6&0xFF=0x6 && ' + \
@@ -98,7 +98,7 @@ class MpECMPSingleInterfaceConfig(MpConfig):
 					self.getRouterInterfaceLSwitch(i),
 					self.getRouterIPClient(i), netmask)
 			self.topo.commandTo(self.routers[-1] , cmd)
-			
+
 			cmd = self.interfaceUpCommand(
 					self.getRouterInterfaceRSwitch(i),
 					self.getRouterIPServer(i), netmask)
@@ -109,7 +109,7 @@ class MpECMPSingleInterfaceConfig(MpConfig):
 		cmd = self.interfaceUpCommand(self.getClientInterface(0),
 				self.getClientIP(0), netmask)
 		self.topo.commandTo(self.client, cmd)
-		
+
 		cmd = self.interfaceUpCommand(self.getServerInterface(),
 				self.getServerIP(), netmask)
 		self.topo.commandTo(self.server, cmd)
@@ -133,7 +133,7 @@ class MpECMPSingleInterfaceConfig(MpConfig):
 		rSubnet = self.param.getParam(MpParamTopo.RSUBNET)
 		routerIP = rSubnet + "0." + str(id + 2)
 		return routerIP
-	
+
 	def getServerIP(self):
 		rSubnet = self.param.getParam(MpParamTopo.RSUBNET)
 		serverIP = rSubnet + "0.1"
@@ -150,7 +150,7 @@ class MpECMPSingleInterfaceConfig(MpConfig):
 
 	def getClientInterface(self, interfaceID):
 		return  MpTopo.clientName + "-eth" + str(interfaceID)
-	
+
 	def getServerInterface(self):
 		return  MpTopo.serverName + "-eth0"
 
diff --git a/src/mpECMPSingleInterfaceTopo.py b/src/mpECMPSingleInterfaceTopo.py
index 9acb60d..d18f246 100644
--- a/src/mpECMPSingleInterfaceTopo.py
+++ b/src/mpECMPSingleInterfaceTopo.py
@@ -3,14 +3,14 @@ from mpTopo import MpTopo
 class MpECMPSingleInterfaceTopo(MpTopo):
 	def __init__(self, topoBuilder, parameterFile):
 		MpTopo.__init__(self,topoBuilder, parameterFile)
-		
+
 		print("Hello ECMP topo")
-		
+
 		self.client = self.addHost(MpTopo.clientName)
 		self.server = self.addHost(MpTopo.serverName)
 		self.lswitch = self.addSwitch(MpTopo.switchNamePrefix + "0")
 		self.rswitch = self.addSwitch(MpTopo.switchNamePrefix + "1")
-		
+
 		self.addLink( self.client, self.lswitch)
 		self.addLink( self.server, self.rswitch)
 
diff --git a/src/mpExperience.py b/src/mpExperience.py
index f996107..ac50778 100644
--- a/src/mpExperience.py
+++ b/src/mpExperience.py
@@ -8,12 +8,12 @@ class MpExperience:
 		self.mpTopo   = mpTopo
 		self.mpConfig = mpConfig
 		print(self.xpParam)
-	
+
 	def classicRun(self):
 		self.prepare()
 		self.run()
 		self.clean()
-	
+
 	def prepare(self):
 		self.setupSysctl()
 		self.runUserspacePM()
diff --git a/src/mpExperienceNCPV.py b/src/mpExperienceNCPV.py
index 9c4c677..4b984ba 100644
--- a/src/mpExperienceNCPV.py
+++ b/src/mpExperienceNCPV.py
@@ -2,7 +2,7 @@ from mpExperience import MpExperience
 from mpParamXp import MpParamXp
 from mpPvAt import MpPvAt
 
-class  MpExperienceNCPV(MpExperience): 
+class  MpExperienceNCPV(MpExperience):
 	"""
 	NC PV : NetCat and Pipe Viewer
 	"""
@@ -15,7 +15,7 @@ class  MpExperienceNCPV(MpExperience):
 		MpExperience.__init__(self, xpParamFile, mpTopo, mpConfig)
 		self.loadParam()
 		MpExperience.classicRun(self)
-	
+
 	def loadParam(self):
 		self.pvg = self.xpParam.getParam(MpParamXp.PVG)
 		self.pvz = self.xpParam.getParam(MpParamXp.PVZ)
@@ -50,8 +50,8 @@ class  MpExperienceNCPV(MpExperience):
 				o = MpPvAt(float(tab[0]), tab[1])
 				self.addPvAt(o)
 			else:
-				print("pv wrong line : " + n)		
-	
+				print("pv wrong line : " + n)
+
 	def addPvAt(self, p):
 		if len(self.changePvAt) == 0 :
 			p.delta = p.at
@@ -119,19 +119,19 @@ class  MpExperienceNCPV(MpExperience):
 		for i in range(0, len(self.ncClientPort)):
 			cmd = self.getNCServerCmd(i)
 			self.mpTopo.commandTo(self.mpConfig.server, cmd)
-			
+
 			cmd = self.getNCClientCmd(i)
 			self.mpConfig.client.sendCmd(cmd)
 
 			cmd = self.getPvPidCmd()
 			self.pvPid = self.mpTopo.commandTo(self.mpConfig.server, cmd)[:-1]
-			
+
 			cmd = self.getPvChangeCmd()
 			print(cmd)
 			self.mpTopo.commandTo(self.mpConfig.server, cmd)
 
 
 			self.mpConfig.client.waitOutput()
-			
+
 			self.mpTopo.commandTo(self.mpConfig.client, "sleep 1")
 
diff --git a/src/mpExperiencePing.py b/src/mpExperiencePing.py
index b86c4b5..3e84be2 100644
--- a/src/mpExperiencePing.py
+++ b/src/mpExperiencePing.py
@@ -1,16 +1,16 @@
 from mpExperience import MpExperience
 from mpParamXp import MpParamXp
 
-class  MpExperiencePing(MpExperience): 
+class  MpExperiencePing(MpExperience):
 
 	PING_OUTPUT = "ping.log"
 
 	def __init__(self, xpParamFile, mpTopo, mpConfig):
 		MpExperience.__init__(self, xpParamFile, mpTopo, mpConfig)
-		MpExperience.classicRun(self)	
+		MpExperience.classicRun(self)
 	def prepapre(self):
 		MpExperience.prepare(self)
-	
+
 	def clean(self):
 		MpExperience.clean(self)
 
diff --git a/src/mpLinkCharacteristics.py b/src/mpLinkCharacteristics.py
index b13fa38..b4e81fa 100644
--- a/src/mpLinkCharacteristics.py
+++ b/src/mpLinkCharacteristics.py
@@ -25,13 +25,13 @@ class MpLinkCharacteristics:
 				print("Do not take into account " + n.__str__() + \
 						"because ooo !")
 			pass
-	
+
 	def buildNetemCmd(self, ifname):
 		cmd = ""
 		for n in self.netemAt:
 			cmd = cmd + "sleep " + str(n.delta)
 			cmd = cmd + " && "
-			cmd = cmd + " tc qdisc change dev " + ifname + " " 
+			cmd = cmd + " tc qdisc change dev " + ifname + " "
 			cmd = cmd + " parent " + MpLinkCharacteristics.tcNetemParent
 			cmd = cmd + " handle " + MpLinkCharacteristics.tcNetemHandle
 			cmd = cmd + " netem " + n.cmd + " && "
@@ -53,4 +53,4 @@ class MpLinkCharacteristics:
 		for l in self.netemAt:
 			s = s + "\t" + l.__str__() + "\n"
 		return s
-		
+
diff --git a/src/mpMininetBuilder.py b/src/mpMininetBuilder.py
index 764e254..63bc0da 100644
--- a/src/mpMininetBuilder.py
+++ b/src/mpMininetBuilder.py
@@ -8,7 +8,7 @@ class MpMininetBuilder(Topo):
 	def __init__(self):
 		Topo.__init__( self )
 		self.net = None
-	
+
 	def commandTo(self, who, cmd):
 		return who.cmd(cmd)
 
@@ -18,7 +18,7 @@ class MpMininetBuilder(Topo):
 		if stderr:
 			return "Error"
 		return stdout
-	
+
 	def startNetwork(self):
 		self.net = Mininet(topo=self,link=TCLink)
 		self.net.start()
@@ -35,7 +35,7 @@ class MpMininetBuilder(Topo):
 			raise Exception("Network not ready");
 		else:
 			return self.net.getNodeByName(who)
-	
+
 	def stopNetwork(self):
 		if self.net is None:
 			print("Could not stop network... Nothing to stop)")
diff --git a/src/mpMultiInterfaceConfig.py b/src/mpMultiInterfaceConfig.py
index adfde2a..701462b 100644
--- a/src/mpMultiInterfaceConfig.py
+++ b/src/mpMultiInterfaceConfig.py
@@ -12,7 +12,7 @@ class MpMultiInterfaceConfig(MpConfig):
 		for l in self.topo.switch:
 			cmd = self.addRouteTableCommand(self.getClientIP(i), i)
 			self.topo.commandTo(self.client, cmd)
-			
+
 			cmd = self.addRouteScopeLinkCommand(
 					self.getClientSubnet(i),
 					self.getClientInterface(i), i)
@@ -22,7 +22,7 @@ class MpMultiInterfaceConfig(MpConfig):
 					i)
 			self.topo.commandTo(self.client, cmd)
 			i = i + 1
-		
+
 		cmd = self.addRouteDefaultGlobalCommand(self.getRouterIPSwitch(0),
 				self.getClientInterface(0))
 		self.topo.commandTo(self.client, cmd)
@@ -30,7 +30,7 @@ class MpMultiInterfaceConfig(MpConfig):
 		cmd = self.addRouteDefaultSimple(self.getRouterIPServer())
 		self.topo.commandTo(self.server, cmd)
 
-	
+
 	def configureInterfaces(self):
 		print("Configure interfaces for multi inf")
 		self.client = self.topo.getHost(MpTopo.clientName)
@@ -43,17 +43,17 @@ class MpMultiInterfaceConfig(MpConfig):
 					self.getClientInterface(i),
 					self.getClientIP(i), netmask)
 			self.topo.commandTo(self.client, cmd)
-			
+
 			cmd = self.interfaceUpCommand(
 					self.getRouterInterfaceSwitch(i),
 					self.getRouterIPSwitch(i), netmask)
 			self.topo.commandTo(self.router, cmd)
 			i = i + 1
-		
+
 		cmd = self.interfaceUpCommand(self.getRouterInterfaceServer(),
 				self.getRouterIPServer(), netmask)
 		self.topo.commandTo(self.router, cmd)
-		
+
 		cmd = self.interfaceUpCommand(self.getServerInterface(),
 				self.getServerIP(), netmask)
 		self.topo.commandTo(self.server, cmd)
@@ -77,7 +77,7 @@ class MpMultiInterfaceConfig(MpConfig):
 		rSubnet = self.param.getParam(MpParamTopo.RSUBNET)
 		routerIP = rSubnet + "0.2"
 		return routerIP
-	
+
 	def getServerIP(self):
 		rSubnet = self.param.getParam(MpParamTopo.RSUBNET)
 		serverIP = rSubnet + "0.1"
@@ -94,7 +94,7 @@ class MpMultiInterfaceConfig(MpConfig):
 
 	def getRouterInterfaceSwitch(self, interfaceID):
 		return  MpTopo.routerName + "-eth" + str(interfaceID)
-	
+
 	def getServerInterface(self):
 		return  MpTopo.serverName + "-eth0"
 
@@ -103,7 +103,7 @@ class MpMultiInterfaceConfig(MpConfig):
 
 	def getMidRightName(self, id):
 		return MpTopo.routerName
-	
+
 	def getMidL2RInterface(self, id):
 		return self.getMidLeftName(id) + "-eth2"
 
diff --git a/src/mpParam.py b/src/mpParam.py
index c6a42ac..3f34a58 100644
--- a/src/mpParam.py
+++ b/src/mpParam.py
@@ -7,7 +7,7 @@ class MpParam:
 			print("default param...")
 		else:
 			self.loadParamFile(paramFile)
-	
+
 	def loadParamFile(self, paramFile):
 		f = open(paramFile)
 		i = 0
diff --git a/src/mpParamTopo.py b/src/mpParamTopo.py
index ff49f3a..9f96320 100644
--- a/src/mpParamTopo.py
+++ b/src/mpParamTopo.py
@@ -31,7 +31,7 @@ class MpParamTopo(MpParam):
 					val = []
 					val.append(tmp)
 				self.loadNetemAtList(i, val)
-	
+
 	def loadNetemAtList(self, id, nlist):
 		for n in nlist:
 			tab = n.split(",")
@@ -44,9 +44,9 @@ class MpParamTopo(MpParam):
 			else:
 				print("Netem wrong line : " + n)
 		print(self.linkCharacteristics[id].netemAt)
-	
+
 	def loadLinkCharacteristics(self):
-		i = 0 
+		i = 0
 		for k in sorted(self.paramDic):
 			if k.startswith("path"):
 				tab = self.paramDic[k].split(",")
diff --git a/src/mpParamXp.py b/src/mpParamXp.py
index d7292e1..19cf5a9 100644
--- a/src/mpParamXp.py
+++ b/src/mpParamXp.py
@@ -64,7 +64,7 @@ class MpParamXp(MpParam):
 
 	def __init__(self, paramFile):
 		MpParam.__init__(self, paramFile)
-	
+
 	def getParam(self, key):
 		val = MpParam.getParam(self, key)
 		if val is None:
diff --git a/src/mpTopo.py b/src/mpTopo.py
index 2537f24..5e4b48c 100644
--- a/src/mpTopo.py
+++ b/src/mpTopo.py
@@ -50,7 +50,7 @@ class MpTopo:
 
 	def startNetwork(self):
 		self.topoBuilder.startNetwork()
-	
+
 	def closeLogFile(self):
 		self.logFile.close()
 
diff --git a/src/mpXpRunner.py b/src/mpXpRunner.py
index a8fcabd..7cdd1d6 100644
--- a/src/mpXpRunner.py
+++ b/src/mpXpRunner.py
@@ -20,7 +20,7 @@ class MpXpRunner:
 		self.startTopo()
 		self.runXp()
 		self.stopTopo()
-		
+
 	def defParamXp(self, xpParamFile):
 		self.xpParam = MpParamXp(xpParamFile)
 
@@ -28,7 +28,7 @@ class MpXpRunner:
 		if builderType == MpTopo.mininetBuilder:
 			self.topoBuilder = MpMininetBuilder()
 		else:
-			raise Exception("I can not find the builder " + 
+			raise Exception("I can not find the builder " +
 					builderType)
 	def defTopo(self):
 		t = self.topoParam.getParam(MpTopo.topoAttr)
@@ -53,7 +53,7 @@ class MpXpRunner:
 					self.mpTopo,
 					self.topoParam)
 		else:
-			raise Exception("Unfound Topo" + t) 
+			raise Exception("Unfound Topo" + t)
 
 	def startTopo(self):
 		self.mpTopo.startNetwork()
@@ -71,6 +71,6 @@ class MpXpRunner:
 			self.mpTopo.getCLI()
 		else:
 			print("Unfound xp type..." + xp)
-	
+
 	def stopTopo(self):
 		self.mpTopo.stopNetwork()