diff --git a/src/mpExperience.py b/src/mpExperience.py
index 4687908..d1c7771 100644
--- a/src/mpExperience.py
+++ b/src/mpExperience.py
@@ -178,11 +178,12 @@ class MpExperience:
 		#todo : replace filename by cst
 		cpcap = self.xpParam.getParam(MpParamXp.CLIENTPCAP)
 		spcap = self.xpParam.getParam(MpParamXp.SERVERPCAP)
+		snaplenpcap = self.xpParam.getParam(MpParamXp.SNAPLENPCAP)
 		if cpcap == "yes" :
 			self.mpTopo.commandTo(self.mpConfig.client,
-					"tcpdump -i any -w client.pcap &")
+					"tcpdump -i any -s " + snaplenpcap + " -w client.pcap &")
 		if spcap == "yes" :
 			self.mpTopo.commandTo(self.mpConfig.server,
-					"tcpdump -i any -w server.pcap &")
+					"tcpdump -i any -s " + snaplenpcap + " -w server.pcap &")
 		if spcap == "yes" or cpcap == "yes":
 			self.mpTopo.commandTo(self.mpConfig.client,"sleep 5")
diff --git a/src/mpParamXp.py b/src/mpParamXp.py
index 0876126..a20c47f 100644
--- a/src/mpParamXp.py
+++ b/src/mpParamXp.py
@@ -15,6 +15,7 @@ class MpParamXp(MpParam):
 	USERPMSARGS   = "upms_args"
 	CLIENTPCAP = "clientPcap"
 	SERVERPCAP = "serverPcap"
+	SNAPLENPCAP = "snaplenPcap"
 	XPTYPE     = "xpType"
 	PINGCOUNT  = "pingCount"
 	DDIBS      = "ddIBS"
@@ -68,6 +69,7 @@ class MpParamXp(MpParam):
 
 	defaultValue[CLIENTPCAP] = "no"
 	defaultValue[SERVERPCAP] = "no"
+	defaultValue[SNAPLENPCAP] = "65535"  # Default snapping value of tcpdump
 	defaultValue[XPTYPE] = "none"
 	defaultValue[PINGCOUNT] = "5"
 	defaultValue[DDIBS] = "1k"