diff --git a/targets/PROJECTS/GENERIC-LTE-EPC/start_enb.bash b/targets/PROJECTS/GENERIC-LTE-EPC/start_enb.bash
index 0d1c25e6ef..58f617d19f 100755
--- a/targets/PROJECTS/GENERIC-LTE-EPC/start_enb.bash
+++ b/targets/PROJECTS/GENERIC-LTE-EPC/start_enb.bash
@@ -49,7 +49,8 @@
 ###########################################################
 # Parameters
 ###########################################################
-declare EMULATION_DEV_INTERFACE="eth2"
+declare EMULATION_DEV_INTERFACE="eth1"
+declare EMULATION_MULTICAST_GROUP=1
 
 declare MAKE_LTE_ACCESS_STRATUM_TARGET="oaisim DEBUG=1 ENABLE_ITTI=1 USE_MME=R10 LINK_PDCP_TO_GTPV1U=1 NAS=1 Rel10=1 SECU=1 RRC_MSG_PRINT=1"
 declare MAKE_LTE_ACCESS_STRATUM_TARGET_RT="lte-softmodem HARD_RT=1 ENABLE_ITTI=1 USE_MME=R10 LINK_PDCP_TO_GTPV1U=1 DISABLE_XER_PRINT=1 SECU=1 RRC_MSG_PRINT=1 "
@@ -57,7 +58,9 @@ declare MAKE_LTE_ACCESS_STRATUM_TARGET_RT="lte-softmodem HARD_RT=1 ENABLE_ITTI=1
 
 ###########################################################
 THIS_SCRIPT_PATH=$(dirname $(readlink -f $0))
-source $THIS_SCRIPT_PATH/utils.bash
+. $THIS_SCRIPT_PATH/utils.bash
+. $THIS_SCRIPT_PATH/interfaces.bash
+. $THIS_SCRIPT_PATH/networks.bash
 ###########################################################
 if [ $# -eq 1 ]; then
     declare -x CONFIG_FILE_DIR=$1
@@ -113,59 +116,37 @@ declare ENB_IPV4_NETMASK_FOR_S1U=$(          echo $ENB_IPV4_ADDRESS_FOR_S1U
 ENB_IPV4_ADDRESS_FOR_S1_MME=$(               echo $ENB_IPV4_ADDRESS_FOR_S1_MME        | cut -f1 -d '/')
 ENB_IPV4_ADDRESS_FOR_S1U=$(                  echo $ENB_IPV4_ADDRESS_FOR_S1U           | cut -f1 -d '/')
 
-is_openvswitch_interface $ENB_INTERFACE_NAME_FOR_S1_MME  \
-                               $ENB_INTERFACE_NAME_FOR_S1U
-
-if [ $? -eq 1 ]; then
-   echo_success "Found open-vswitch network configuration"
-else
-    is_vlan_interface $ENB_INTERFACE_NAME_FOR_S1_MME \
-                      $ENB_INTERFACE_NAME_FOR_S1U
-    if [ $? -eq 1 ]; then
-        echo_success "Found VLAN network configuration"
-        clean_enb_vlan_network
-        build_enb_vlan_network
-        test_enb_vlan_network
-    else
-        is_real_interface  $ENB_INTERFACE_NAME_FOR_S1_MME \
-                      $ENB_INTERFACE_NAME_FOR_S1U
-        if [ $? -eq 1 ]; then
-            echo_success "Found standart network configuration"
-        else
-            echo_error "Cannot find open-vswitch network configuration or VLAN network configuration or standard network configuration"
-            exit 1
-        fi
-    fi 
-fi
-
 
 ##################################################
-# LAUNCH eNB + UE executable
+# LAUNCH eNB executable
 ##################################################
 pkill oaisim
 pkill tshark
 
+if [ ! -d $THIS_SCRIPT_PATH/OUTPUT/$HOSTNAME ]; then 
+    mkdir -m 777 -p $THIS_SCRIPT_PATH/OUTPUT/$HOSTNAME
+fi
 
 if [ x$hard_real_time != "xyes" ]; then
-    ITTI_LOG_FILE=$THIS_SCRIPT_PATH/OUTPUT/itti_enb_ue.$HOSTNAME.log
-    rotate_log_file $ITTI_LOG_FILE
+    ITTI_LOG_FILE=$THIS_SCRIPT_PATH/OUTPUT/$HOSTNAME/itti_enb_ue.$HOSTNAME.log
+    #rotate_log_file $ITTI_LOG_FILE
     
-    STDOUT_LOG_FILE=$THIS_SCRIPT_PATH/OUTPUT/stdout_enb_ue.$HOSTNAME.log
-    rotate_log_file $STDOUT_LOG_FILE
-    rotate_log_file $STDOUT_LOG_FILE.filtered
+    STDOUT_LOG_FILE=$THIS_SCRIPT_PATH/OUTPUT/$HOSTNAME/stdout_enb_ue.$HOSTNAME.log
+    #rotate_log_file $STDOUT_LOG_FILE
+    #rotate_log_file $STDOUT_LOG_FILE.filtered
     
-    PCAP_LOG_FILE=$THIS_SCRIPT_PATH/OUTPUT/tshark_enb_ue.$HOSTNAME.pcap
-    rotate_log_file $PCAP_LOG_FILE
+    PCAP_LOG_FILE=$THIS_SCRIPT_PATH/OUTPUT/$HOSTNAME/tshark_enb_ue.$HOSTNAME.pcap
+    #rotate_log_file $PCAP_LOG_FILE
 else 
-    ITTI_LOG_FILE=$THIS_SCRIPT_PATH/OUTPUT/itti_enb_rf.$HOSTNAME.log
-    rotate_log_file $ITTI_LOG_FILE
+    ITTI_LOG_FILE=$THIS_SCRIPT_PATH/OUTPUT/$HOSTNAME/itti_enb_rf.$HOSTNAME.log
+    #rotate_log_file $ITTI_LOG_FILE
     
-    STDOUT_LOG_FILE=$THIS_SCRIPT_PATH/OUTPUT/stdout_enb_rf.$HOSTNAME.log
-    rotate_log_file $STDOUT_LOG_FILE
-    rotate_log_file $STDOUT_LOG_FILE.filtered
+    STDOUT_LOG_FILE=$THIS_SCRIPT_PATH/OUTPUT/$HOSTNAME/stdout_enb_rf.$HOSTNAME.log
+    #rotate_log_file $STDOUT_LOG_FILE
+    #rotate_log_file $STDOUT_LOG_FILE.filtered
     
-    PCAP_LOG_FILE=$THIS_SCRIPT_PATH/OUTPUT/tshark_enb_rf.$HOSTNAME.pcap
-    rotate_log_file $PCAP_LOG_FILE
+    PCAP_LOG_FILE=$THIS_SCRIPT_PATH/OUTPUT/$HOSTNAME/tshark_enb_rf.$HOSTNAME.pcap
+    #rotate_log_file $PCAP_LOG_FILE
 fi
 
 
@@ -182,18 +163,18 @@ if [ x$hard_real_time != "xyes" ]; then
     echo_warning "USER MODE"
     make --directory=$OPENAIR_TARGETS/SIMU/USER $MAKE_LTE_ACCESS_STRATUM_TARGET -j`grep -c ^processor /proc/cpuinfo ` || exit 1
     bash_exec "ip route add 239.0.0.160/28 dev $EMULATION_DEV_INTERFACE"
-    gdb --args $OPENAIR_TARGETS/SIMU/USER/oaisim -a  -l9 -u0 -b1 -M0 -p2  -g1 -D $EMULATION_DEV_ADDRESS -K $ITTI_LOG_FILE --enb-conf $CONFIG_FILE_ENB 2>&1 | tee $STDOUT_LOG_FILE 
+    gdb --args $OPENAIR_TARGETS/SIMU/USER/oaisim -a  -l9 -u0 -b1 -M0 -p2  -g$EMULATION_MULTICAST_GROUP -D $EMULATION_DEV_ADDRESS -K $ITTI_LOG_FILE --enb-conf $CONFIG_FILE_ENB 2>&1 | tee $STDOUT_LOG_FILE 
 else
     echo_warning "HARD REAL TIME MODE"
     PATH=$PATH:/usr/realtime/bin
     
-    #make --directory=$OPENAIR_TARGETS/RTAI/USER drivers  || exit 1
+    #make --directory=$OPENAIR_TARGETS/RT/USER drivers  || exit 1
     # 2 lines below replace the line above
     cd $OPENAIR_TARGETS/ARCH/EXMIMO/DRIVER/eurecom && make clean && make   || exit 1
     cd $OPENAIR_TARGETS/ARCH/EXMIMO/USERSPACE/OAI_FW_INIT && make clean && make   || exit 1
     cd $THIS_SCRIPT_PATH
     
-    make --directory=$OPENAIR_TARGETS/RTAI/USER $MAKE_LTE_ACCESS_STRATUM_TARGET_RT -j`grep -c ^processor /proc/cpuinfo ` || exit 1
+    make --directory=$OPENAIR_TARGETS/RT/USER $MAKE_LTE_ACCESS_STRATUM_TARGET_RT -j`grep -c ^processor /proc/cpuinfo ` || exit 1
     
     if [ ! -f /tmp/init_rt_done.tmp ]; then
         echo_warning "STARTING REAL TIME (RTAI)"
@@ -208,7 +189,7 @@ else
         echo_warning "REAL TIME FOUND STARTED (RTAI)"
     fi
     
-    cd $OPENAIR_TARGETS/RTAI/USER
+    cd $OPENAIR_TARGETS/RT/USER
     bash ./init_exmimo2.sh
     echo_warning "STARTING SOFTMODEM..."
     ./lte-softmodem -K $ITTI_LOG_FILE -O $CONFIG_FILE_ENB 2>&1