diff --git a/TestON/tests/USECASE_SdnipFunctionCluster/USECASE_SdnipFunctionCluster.py b/TestON/tests/USECASE_SdnipFunctionCluster/USECASE_SdnipFunctionCluster.py
new file mode 100644
index 0000000..09f87ef
--- /dev/null
+++ b/TestON/tests/USECASE_SdnipFunctionCluster/USECASE_SdnipFunctionCluster.py
@@ -0,0 +1,799 @@
+# Testing the functionality of SDN-IP with single ONOS instance
+class USECASE_SdnipFunctionCluster:
+
+    def __init__( self ):
+        self.default = ''
+        global branchName
+
+    def CASE100( self, main ):
+        """
+            Start mininet
+        """
+        import imp
+        main.log.case( "Setup the Mininet testbed" )
+        main.dependencyPath = main.testDir + \
+                              main.params[ 'DEPENDENCY' ][ 'path' ]
+        main.topology = main.params[ 'DEPENDENCY' ][ 'topology' ]
+
+        main.step( "Starting Mininet Topology" )
+        topology = main.dependencyPath + main.topology
+        topoResult = main.Mininet.startNet( topoFile = topology )
+        utilities.assert_equals( expect = main.TRUE,
+                                 actual = topoResult,
+                                 onpass = "Successfully loaded topology",
+                                 onfail = "Failed to load topology" )
+        # Exit if topology did not load properly
+        if not topoResult:
+            main.cleanup()
+            main.exit()
+        main.step( "Connect switches to controllers" )
+
+        # connect all switches to controllers
+        swResult = main.TRUE
+        for i in range ( 1, int( main.params['config']['switchNum'] ) + 1 ):
+            sw = "sw%s" % ( i )
+            swResult = swResult and main.Mininet.assignSwController( sw,
+                                                 [ONOS1Ip, ONOS2Ip, ONOS3Ip] )
+
+        utilities.assert_equals( expect = main.TRUE,
+                             actual = swResult,
+                             onpass = "Successfully connect all switches to ONOS",
+                             onfail = "Failed to connect all switches to ONOS" )
+        if not swResult:
+            main.cleanup()
+            main.exit()
+
+
+    def CASE101( self, main ):
+        """
+           Package ONOS and install it
+           Startup sequence:
+           cell <name>
+           onos-verify-cell
+           onos-package
+           onos-install -f
+           onos-wait-for-start
+        """
+        import json
+        import time
+        import os
+        from operator import eq
+
+        main.case( "Setting up ONOS environment" )
+
+        cellName = main.params[ 'ENV' ][ 'cellName' ]
+        global ONOS1Ip
+        global ONOS2Ip
+        global ONOS3Ip
+        ONOS1Ip = os.getenv( main.params[ 'CTRL' ][ 'ip1' ] )
+        ONOS2Ip = os.getenv( main.params[ 'CTRL' ][ 'ip2' ] )
+        ONOS3Ip = os.getenv( main.params[ 'CTRL' ][ 'ip3' ] )
+
+        global peer64514
+        global peer64515
+        global peer64516
+        peer64514 = main.params['config']['peer64514']
+        peer64515 = main.params['config']['peer64515']
+        peer64516 = main.params['config']['peer64516']
+
+        main.step( "Applying cell variable to environment" )
+        cellResult = main.ONOSbench.setCell( cellName )
+        utilities.assert_equals( expect = main.TRUE,
+                                 actual = cellResult,
+                                 onpass = "Set cell succeeded",
+                                 onfail = "Set cell failed" )
+
+        verifyResult = main.ONOSbench.verifyCell()
+        utilities.assert_equals( expect = main.TRUE,
+                                 actual = verifyResult,
+                                 onpass = "Verify cell succeeded",
+                                 onfail = "Verify cell failed" )
+
+        branchName = main.ONOSbench.getBranchName()
+        main.log.report( "ONOS is on branch: " + branchName )
+
+        main.log.step( "Uninstalling ONOS" )
+        uninstallResult = main.ONOSbench.onosUninstall( ONOS1Ip ) \
+                          and main.ONOSbench.onosUninstall( ONOS2Ip ) \
+                          and main.ONOSbench.onosUninstall( ONOS3Ip )
+        utilities.assert_equals( expect = main.TRUE,
+                                 actual = uninstallResult,
+                                 onpass = "Uninstall ONOS from nodes succeeded",
+                                 onfail = "Uninstall ONOS form nodes failed" )
+
+        main.ONOSbench.getVersion( report = True )
+
+        main.step( "Creating ONOS package" )
+        packageResult = main.ONOSbench.onosPackage( opTimeout = 500 )
+        utilities.assert_equals( expect = main.TRUE,
+                                 actual = packageResult,
+                                 onpass = "Package ONOS succeeded",
+                                 onfail = "Package ONOS failed" )
+
+        main.step( "Installing ONOS package" )
+        onos1InstallResult = main.ONOSbench.onosInstall( options = "-f",
+                                                         node = ONOS1Ip )
+        onos2InstallResult = main.ONOSbench.onosInstall( options = "-f",
+                                                         node = ONOS2Ip )
+        onos3InstallResult = main.ONOSbench.onosInstall( options = "-f",
+                                                         node = ONOS3Ip )
+        onosInstallResult = onos1InstallResult and onos2InstallResult \
+                            and onos3InstallResult
+        utilities.assert_equals( expect = main.TRUE,
+                                 actual = onosInstallResult,
+                                 onpass = "Install ONOS to nodes succeeded",
+                                 onfail = "Install ONOS to nodes failed" )
+
+        main.step( "Checking if ONOS is up yet" )
+        onos1UpResult = main.ONOSbench.isup( ONOS1Ip, timeout = 420 )
+        onos2UpResult = main.ONOSbench.isup( ONOS2Ip, timeout = 420 )
+        onos3UpResult = main.ONOSbench.isup( ONOS3Ip, timeout = 420 )
+        onosUpResult = onos1UpResult and onos2UpResult and onos3UpResult
+        utilities.assert_equals( expect = main.TRUE,
+                                 actual = onos1UpResult and onosUpResult,
+                                 onpass = "ONOS nodes are up",
+                                 onfail = "ONOS nodes are NOT up" )
+
+        main.step( "Checking if ONOS CLI is ready" )
+        cliResult = main.ONOScli.startOnosCli( ONOS1Ip,
+                commandlineTimeout = 100, onosStartTimeout = 600 )
+        utilities.assert_equals( expect = main.TRUE,
+                                 actual = cliResult,
+                                 onpass = "ONOS CLI (on node1) is ready",
+                                 onfail = "ONOS CLI (on node1) ready" )
+
+        caseResult = ( cellResult and verifyResult and
+                       packageResult and
+                       onosInstallResult and onosUpResult and cliResult )
+
+        utilities.assert_equals( expect = main.TRUE, actual = caseResult,
+                                 onpass = "ONOS startup successful",
+                                 onfail = "ONOS startup NOT successful" )
+
+        if caseResult == main.FALSE:
+            main.log.error( "ONOS startup failed!" )
+            main.cleanup()
+            main.exit()
+
+
+    def CASE200( self, main ):
+        main.case( "Activate sdn-ip application" )
+        main.log.info( "waiting link discovery......" )
+        time.sleep( int ( main.params['timers']['TopoDiscovery'] ) )
+
+        main.log.info( "Get links in the network" )
+        summaryResult = main.ONOScli.summary()
+        linkNum = json.loads( summaryResult )[ "links" ]
+        if linkNum < 100:
+            main.log.error( "Link number is wrong!" )
+            listResult = main.ONOScli.links( jsonFormat = False )
+            main.log.info( listResult )
+            main.cleanup()
+            main.exit()
+
+        listResult = main.ONOScli.links( jsonFormat = False )
+        main.log.info( listResult )
+
+        main.step( "Activate sdn-ip application" )
+        activeSDNIPresult = main.ONOScli.activateApp( "org.onosproject.sdnip" )
+        utilities.assert_equals( expect = main.TRUE,
+                                 actual = activeSDNIPresult,
+                                 onpass = "Activate SDN-IP succeeded",
+                                 onfail = "Activate SDN-IP failed" )
+        if not activeSDNIPresult:
+            main.cleanup()
+            main.exit()
+
+        # TODO should be deleted in the future after the SDN-IP bug is fixed
+        main.ONOScli.deactivateApp( "org.onosproject.sdnip" )
+        main.ONOScli.activateApp( "org.onosproject.sdnip" )
+
+
+    def CASE102( self, main ):
+        '''
+        This test case is to load the methods from other Python files, and create
+        tunnels from mininet host to onos nodes.
+        '''
+        import time
+        main.case( "Load methods from other Python file and create tunnels" )
+        # load the methods from other file
+        wrapperFile1 = main.params[ 'DEPENDENCY' ][ 'wrapper1' ]
+        main.Functions = imp.load_source( wrapperFile1,
+                                          main.dependencyPath +
+                                          wrapperFile1 +
+                                          ".py" )
+        # Create tunnels
+        main.Functions.setupTunnel( main, '1.1.1.2', 2000, ONOS1Ip, 2000 )
+        main.Functions.setupTunnel( main, '1.1.1.4', 2000, ONOS2Ip, 2000 )
+        main.Functions.setupTunnel( main, '1.1.1.6', 2000, ONOS3Ip, 2000 )
+
+        main.log.info( "Wait SDN-IP to finish installing connectivity intents \
+        and the BGP paths in data plane are ready..." )
+        time.sleep( int( main.params[ 'timers' ][ 'SdnIpSetup' ] ) )
+
+        main.log.info( "Wait Quagga to finish delivery all routes to each \
+        other and to sdn-ip, plus finish installing all intents..." )
+        time.sleep( int( main.params[ 'timers' ][ 'RouteDelivery' ] ) )
+        # TODO
+        # time.sleep( int( main.params[ 'timers' ][ 'PathAvailable' ] ) )
+
+        '''
+        # TODO: use for together with wrapperFile1
+        wrapperFile2 = main.params[ 'DEPENDENCY' ][ 'wrapper2' ]
+        main.USECASE_SdnipI2MN_Cluster = imp.load_source( wrapperFile2,
+                                                         main.dependencyPath +
+                                                         wrapperFile2 +
+                                                         ".py" )
+        '''
+
+
+    def CASE1( self, main ):
+        '''
+        ping test from 3 bgp peers to BGP speaker
+        '''
+
+        main.case( "Ping tests between BGP peers and speakers" )
+        main.Functions.pingSpeakerToPeer( main, speakers = ["speaker1"],
+                       peers = ["peer64514", "peer64515", "peer64516"],
+                       expectAllSuccess = True )
+        main.Functions.pingSpeakerToPeer( main, speakers = ["speaker2"],
+                       peers = [peer64514, peer64515, peer64516],
+                       expectAllSuccess = True )
+
+
+    def CASE2( self, main ):
+        '''
+        point-to-point intents test for each BGP peer and BGP speaker pair
+        '''
+        main.case( "Check point-to-point intents" )
+        main.log.info( "There are %s BGP peers in total "
+                       % main.params[ 'config' ][ 'peerNum' ] )
+        main.step( "Check P2P intents number from ONOS CLI" )
+
+        getIntentsResult = main.ONOScli.intents( jsonFormat = True )
+        bgpIntentsActualNum = \
+            main.QuaggaCliSpeaker1.extractActualBgpIntentNum( getIntentsResult )
+        bgpIntentsExpectedNum = int( main.params[ 'config' ][ 'peerNum' ] ) * 6 * 2
+        main.log.info( "bgpIntentsExpected num is:" )
+        main.log.info( bgpIntentsExpectedNum )
+        main.log.info( "bgpIntentsActual num is:" )
+        main.log.info( bgpIntentsActualNum )
+        utilities.assertEquals( \
+            expect = True,
+            actual = eq( bgpIntentsExpectedNum, bgpIntentsActualNum ),
+            onpass = "PointToPointIntent Intent Num is correct!",
+            onfail = "PointToPointIntent Intent Num is wrong!" )
+
+
+    def CASE3( self, main ):
+        '''
+        routes and intents check to all BGP peers
+        '''
+        main.case( "Check routes and M2S intents to all BGP peers" )
+
+        allRoutesExpected = []
+        allRoutesExpected.append( "4.0.0.0/24" + "/" + "10.0.4.1" )
+        allRoutesExpected.append( "5.0.0.0/24" + "/" + "10.0.5.1" )
+        allRoutesExpected.append( "6.0.0.0/24" + "/" + "10.0.6.1" )
+
+        getRoutesResult = main.ONOScli.routes( jsonFormat = True )
+        allRoutesActual = \
+            main.QuaggaCliSpeaker1.extractActualRoutesMaster( getRoutesResult )
+        allRoutesStrExpected = str( sorted( allRoutesExpected ) )
+        allRoutesStrActual = str( allRoutesActual ).replace( 'u', "" )
+
+        main.step( "Check routes installed" )
+        main.log.info( "Routes expected:" )
+        main.log.info( allRoutesStrExpected )
+        main.log.info( "Routes get from ONOS CLI:" )
+        main.log.info( allRoutesStrActual )
+        utilities.assertEquals( \
+            expect = allRoutesStrExpected, actual = allRoutesStrActual,
+            onpass = "Routes are correct!",
+            onfail = "Routes are wrong!" )
+
+        main.step( "Check M2S intents installed" )
+        getIntentsResult = main.ONOScli.intents( jsonFormat = True )
+        routeIntentsActualNum = \
+            main.QuaggaCliSpeaker1.extractActualRouteIntentNum( getIntentsResult )
+        routeIntentsExpectedNum = 3
+
+        main.log.info( "MultiPointToSinglePoint Intent Num expected is:" )
+        main.log.info( routeIntentsExpectedNum )
+        main.log.info( "MultiPointToSinglePoint Intent NUM Actual is:" )
+        main.log.info( routeIntentsActualNum )
+        utilities.assertEquals( \
+            expect = True,
+            actual = eq( routeIntentsExpectedNum, routeIntentsActualNum ),
+            onpass = "MultiPointToSinglePoint Intent Num is correct!",
+            onfail = "MultiPointToSinglePoint Intent Num is wrong!" )
+
+        main.step( "Check whether all flow status are ADDED" )
+        utilities.assertEquals( \
+            expect = main.TRUE,
+            actual = main.ONOScli.checkFlowsState( isPENDING_ADD = False ),
+            onpass = "Flow status is correct!",
+            onfail = "Flow status is wrong!" )
+
+
+    def CASE4( self, main ):
+        '''
+        Ping test in data plane for each route
+        '''
+        main.case( "Ping test for each route, all hosts behind BGP peers" )
+        main.Functions.pingHostToHost( main,
+                        hosts = ["host64514", "host64515", "host64516"],
+                        expectAllSuccess = True )
+
+
+    def CASE5( self, main ):
+        '''
+        Cut links to peers one by one, check routes/intents
+        '''
+        import time
+        main.case( "Bring down links and check routes/intents" )
+        main.step( "Bring down the link between sw32 and peer64514" )
+        linkResult1 = main.Mininet.link( END1 = "sw32", END2 = "peer64514",
+                                         OPTION = "down" )
+        utilities.assertEquals( expect = main.TRUE,
+                                actual = linkResult1,
+                                onpass = "Bring down link succeeded!",
+                                onfail = "Bring down link failed!" )
+
+        if linkResult1 == main.TRUE:
+            time.sleep( int( main.params[ 'timers' ][ 'RouteDelivery' ] ) )
+            main.Functions.checkRouteNum( main, 2 )
+            main.Functions.checkM2SintentNum( main, 2 )
+        else:
+            main.log.error( "Bring down link failed!" )
+            main.cleanup()
+            main.exit()
+
+        main.step( "Bring down the link between sw8 and peer64515" )
+        linkResult2 = main.Mininet.link( END1 = "sw8", END2 = "peer64515",
+                                         OPTION = "down" )
+        utilities.assertEquals( expect = main.TRUE,
+                                actual = linkResult2,
+                                onpass = "Bring down link succeeded!",
+                                onfail = "Bring down link failed!" )
+        if linkResult2 == main.TRUE:
+            time.sleep( int( main.params[ 'timers' ][ 'RouteDelivery' ] ) )
+            main.Functions.checkRouteNum( main, 1 )
+            main.Functions.checkM2SintentNum( main, 1 )
+        else:
+            main.log.error( "Bring down link failed!" )
+            main.cleanup()
+            main.exit()
+
+        main.step( "Bring down the link between sw28 and peer64516" )
+        linkResult3 = main.Mininet.link( END1 = "sw28", END2 = "peer64516",
+                                         OPTION = "down" )
+        utilities.assertEquals( expect = main.TRUE,
+                                actual = linkResult3,
+                                onpass = "Bring down link succeeded!",
+                                onfail = "Bring down link failed!" )
+        if linkResult3 == main.TRUE:
+            time.sleep( int( main.params[ 'timers' ][ 'RouteDelivery' ] ) )
+            main.Functions.checkRouteNum( main, 0 )
+            main.Functions.checkM2SintentNum( main, 0 )
+        else:
+            main.log.error( "Bring down link failed!" )
+            main.cleanup()
+            main.exit()
+
+        main.step( "Check whether all flow status are ADDED" )
+        utilities.assertEquals( \
+            expect = main.TRUE,
+            actual = main.ONOScli.checkFlowsState( isPENDING_ADD = False ),
+            onpass = "Flow status is correct!",
+            onfail = "Flow status is wrong!" )
+
+        # Ping test
+        main.Functions.pingSpeakerToPeer( main, speakers = ["speaker1"],
+                       peers = ["peer64514", "peer64515", "peer64516"],
+                       expectAllSuccess = False )
+        main.Functions.pingHostToHost( main,
+                        hosts = ["host64514", "host64515", "host64516"],
+                        expectAllSuccess = False )
+
+
+    def CASE6( self, main ):
+        '''
+        Recover links to peers one by one, check routes/intents
+        '''
+        import time
+        main.case( "Bring up links and check routes/intents" )
+        main.step( "Bring up the link between sw32 and peer64514" )
+        linkResult1 = main.Mininet.link( END1 = "sw32", END2 = "peer64514",
+                                         OPTION = "up" )
+        utilities.assertEquals( expect = main.TRUE,
+                                actual = linkResult1,
+                                onpass = "Bring up link succeeded!",
+                                onfail = "Bring up link failed!" )
+        if linkResult1 == main.TRUE:
+            time.sleep( int( main.params[ 'timers' ][ 'RouteDelivery' ] ) )
+            main.Functions.checkRouteNum( main, 1 )
+            main.Functions.checkM2SintentNum( main, 1 )
+        else:
+            main.log.error( "Bring up link failed!" )
+            main.cleanup()
+            main.exit()
+
+        main.step( "Bring up the link between sw8 and peer64515" )
+        linkResult2 = main.Mininet.link( END1 = "sw8", END2 = "peer64515",
+                                         OPTION = "up" )
+        utilities.assertEquals( expect = main.TRUE,
+                                actual = linkResult2,
+                                onpass = "Bring up link succeeded!",
+                                onfail = "Bring up link failed!" )
+        if linkResult2 == main.TRUE:
+            time.sleep( int( main.params[ 'timers' ][ 'RouteDelivery' ] ) )
+            main.Functions.checkRouteNum( main, 2 )
+            main.Functions.checkM2SintentNum( main, 2 )
+        else:
+            main.log.error( "Bring up link failed!" )
+            main.cleanup()
+            main.exit()
+
+        main.step( "Bring up the link between sw28 and peer64516" )
+        linkResult3 = main.Mininet.link( END1 = "sw28", END2 = "peer64516",
+                                         OPTION = "up" )
+        utilities.assertEquals( expect = main.TRUE,
+                                actual = linkResult3,
+                                onpass = "Bring up link succeeded!",
+                                onfail = "Bring up link failed!" )
+        if linkResult3 == main.TRUE:
+            time.sleep( int( main.params[ 'timers' ][ 'RouteDelivery' ] ) )
+            main.Functions.checkRouteNum( main, 3 )
+            main.Functions.checkM2SintentNum( main, 3 )
+        else:
+            main.log.error( "Bring up link failed!" )
+            main.cleanup()
+            main.exit()
+
+        main.step( "Check whether all flow status are ADDED" )
+        utilities.assertEquals( \
+            expect = main.TRUE,
+            actual = main.ONOScli.checkFlowsState( isPENDING_ADD = False ),
+            onpass = "Flow status is correct!",
+            onfail = "Flow status is wrong!" )
+
+        # Ping test
+        main.Functions.pingSpeakerToPeer( main, speakers = ["speaker1"],
+                       peers = ["peer64514", "peer64515", "peer64516"],
+                       expectAllSuccess = True )
+        main.Functions.pingHostToHost( main,
+                        hosts = ["host64514", "host64515", "host64516"],
+                        expectAllSuccess = True )
+
+
+    def CASE7( self, main ):
+        '''
+        Shut down a edge switch, check P-2-P and M-2-S intents, ping test
+        '''
+        import time
+        main.case( "Stop edge sw32,check P-2-P and M-2-S intents, ping test" )
+        main.step( "Stop sw32" )
+        result = main.Mininet.switch( SW = "sw32", OPTION = "stop" )
+        utilities.assertEquals( expect = main.TRUE, actual = result,
+                                onpass = "Stopping switch succeeded!",
+                                onfail = "Stopping switch failed!" )
+
+        if result == main.TRUE:
+            time.sleep( int( main.params[ 'timers' ][ 'RouteDelivery' ] ) )
+            main.Functions.checkRouteNum( main, 2 )
+            main.Functions.checkM2SintentNum( main, 2 )
+            main.Functions.checkP2PintentNum( main, 12 * 2 )
+        else:
+            main.log.error( "Stopping switch failed!" )
+            main.cleanup()
+            main.exit()
+
+        main.step( "Check ping between hosts behind BGP peers" )
+        result1 = main.Mininet.pingHost( src = "host64514", target = "host64515" )
+        result2 = main.Mininet.pingHost( src = "host64515", target = "host64516" )
+        result3 = main.Mininet.pingHost( src = "host64514", target = "host64516" )
+
+        pingResult1 = ( result1 == main.FALSE ) and ( result2 == main.TRUE ) \
+                      and ( result3 == main.FALSE )
+        utilities.assert_equals( expect = True, actual = pingResult1,
+                                 onpass = "Ping test result is correct",
+                                 onfail = "Ping test result is wrong" )
+
+        if pingResult1 == False:
+            main.cleanup()
+            main.exit()
+
+        main.step( "Check ping between BGP peers and speaker1" )
+        result4 = main.Mininet.pingHost( src = "speaker1", target = "peer64514" )
+        result5 = main.Mininet.pingHost( src = "speaker1", target = "peer64515" )
+        result6 = main.Mininet.pingHost( src = "speaker1", target = "peer64516" )
+
+        pingResult2 = ( result4 == main.FALSE ) and ( result5 == main.TRUE ) \
+                      and ( result6 == main.TRUE )
+        utilities.assert_equals( expect = True, actual = pingResult2,
+                                 onpass = "Speaker1 ping peers successful",
+                                 onfail = "Speaker1 ping peers NOT successful" )
+
+        if pingResult2 == False:
+            main.cleanup()
+            main.exit()
+
+        main.step( "Check ping between BGP peers and speaker2" )
+        # TODO
+        result7 = main.Mininet.pingHost( src = "speaker2", target = peer64514 )
+        result8 = main.Mininet.pingHost( src = "speaker2", target = peer64515 )
+        result9 = main.Mininet.pingHost( src = "speaker2", target = peer64516 )
+
+        pingResult3 = ( result7 == main.FALSE ) and ( result8 == main.TRUE ) \
+                                                and ( result9 == main.TRUE )
+        utilities.assert_equals( expect = True, actual = pingResult2,
+                                 onpass = "Speaker2 ping peers successful",
+                                 onfail = "Speaker2 ping peers NOT successful" )
+
+        if pingResult3 == False:
+            main.cleanup()
+            main.exit()
+
+        main.step( "Check whether all flow status are ADDED" )
+        utilities.assertEquals( \
+            expect = main.TRUE,
+            actual = main.ONOScli.checkFlowsState( isPENDING_ADD = False ),
+            onpass = "Flow status is correct!",
+            onfail = "Flow status is wrong!" )
+
+
+    def CASE8( self, main ):
+        '''
+        Bring up the edge switch (sw32) which was shut down in CASE7,
+        check P-2-P and M-2-S intents, ping test
+        '''
+        import time
+        main.case( "Start the edge sw32, check P-2-P and M-2-S intents, ping test" )
+        main.step( "Start sw32" )
+        result1 = main.Mininet.switch( SW = "sw32", OPTION = "start" )
+        utilities.assertEquals( \
+            expect = main.TRUE,
+            actual = result1,
+            onpass = "Starting switch succeeded!",
+            onfail = "Starting switch failed!" )
+
+        result2 = main.Mininet.assignSwController( "sw32", ONOS1Ip )
+        utilities.assertEquals( \
+            expect = main.TRUE,
+            actual = result2,
+            onpass = "Connect switch to ONOS succeeded!",
+            onfail = "Connect switch to ONOS failed!" )
+
+        if result1 and result2:
+            time.sleep( int( main.params[ 'timers' ][ 'RouteDelivery' ] ) )
+            main.Functions.checkRouteNum( main, 3 )
+            main.Functions.checkM2SintentNum( main, 3 )
+            main.Functions.checkP2PintentNum( main, 18 * 2 )
+        else:
+            main.log.error( "Starting switch failed!" )
+            main.cleanup()
+            main.exit()
+
+        main.step( "Check whether all flow status are ADDED" )
+        utilities.assertEquals( \
+            expect = main.TRUE,
+            actual = main.ONOScli.checkFlowsState( isPENDING_ADD = False ),
+            onpass = "Flow status is correct!",
+            onfail = "Flow status is wrong!" )
+
+        # Ping test
+        main.Functions.pingSpeakerToPeer( main, speakers = ["speaker1"],
+                       peers = ["peer64514", "peer64515", "peer64516"],
+                       expectAllSuccess = True )
+        main.Functions.pingSpeakerToPeer( main, speakers = ["speaker2"],
+                       peers = [peer64514, peer64515, peer64516],
+                       expectAllSuccess = True )
+        main.Functions.pingHostToHost( main,
+                        hosts = ["host64514", "host64515", "host64516"],
+                        expectAllSuccess = True )
+
+
+    def CASE9( self, main ):
+        '''
+        Bring down a switch in best path, check:
+        route number, P2P intent number, M2S intent number, ping test
+        '''
+        main.case( "Stop sw11 located in best path, \
+        check route number, P2P intent number, M2S intent number, ping test" )
+
+        main.log.info( "Check the flow number correctness before stopping sw11" )
+        main.Functions.checkFlowNum( main, "sw11", 19 )
+        main.Functions.checkFlowNum( main, "sw1", 3 )
+        main.Functions.checkFlowNum( main, "sw7", 3 )
+        main.log.info( main.Mininet.checkFlows( "sw11" ) )
+        main.log.info( main.Mininet.checkFlows( "sw1" ) )
+        main.log.info( main.Mininet.checkFlows( "sw7" ) )
+
+        main.step( "Stop sw11" )
+        result = main.Mininet.switch( SW = "sw11", OPTION = "stop" )
+        utilities.assertEquals( expect = main.TRUE, actual = result,
+                                onpass = "Stopping switch succeeded!",
+                                onfail = "Stopping switch failed!" )
+        if result:
+            time.sleep( int( main.params[ 'timers' ][ 'RouteDelivery' ] ) )
+            time.sleep( int( main.params[ 'timers' ][ 'RouteDelivery' ] ) )
+            main.Functions.checkRouteNum( main, 3 )
+            main.Functions.checkM2SintentNum( main, 3 )
+            main.Functions.checkP2PintentNum( main, 18 * 2 )
+        else:
+            main.log.error( "Stopping switch failed!" )
+            main.cleanup()
+            main.exit()
+
+        main.step( "Check whether all flow status are ADDED" )
+        utilities.assertEquals( \
+            expect = main.TRUE,
+            actual = main.ONOScli.checkFlowsState( isPENDING_ADD = False ),
+            onpass = "Flow status is correct!",
+            onfail = "Flow status is wrong!" )
+        # Ping test
+        main.Functions.pingSpeakerToPeer( main, speakers = ["speaker1"],
+                       peers = ["peer64514", "peer64515", "peer64516"],
+                       expectAllSuccess = True )
+        main.Functions.pingSpeakerToPeer( main, speakers = ["speaker2"],
+                       peers = [peer64514, peer64515, peer64516],
+                       expectAllSuccess = True )
+        main.Functions.pingHostToHost( main,
+                        hosts = ["host64514", "host64515", "host64516"],
+                        expectAllSuccess = True )
+
+
+    def CASE10( self, main ):
+        '''
+        Bring up the switch which was stopped in CASE9, check:
+        route number, P2P intent number, M2S intent number, ping test
+        '''
+        main.case( "Start sw11 which was stopped in CASE9, \
+        check route number, P2P intent number, M2S intent number, ping test" )
+
+        main.log.info( "Check the flow status before starting sw11" )
+        main.Functions.checkFlowNum( main, "sw1", 17 )
+        main.Functions.checkFlowNum( main, "sw7", 5 )
+        main.log.info( main.Mininet.checkFlows( "sw1" ) )
+        main.log.info( main.Mininet.checkFlows( "sw7" ) )
+
+        main.step( "Start sw11" )
+        result1 = main.Mininet.switch( SW = "sw11", OPTION = "start" )
+        utilities.assertEquals( expect = main.TRUE, actual = result1,
+                                onpass = "Starting switch succeeded!",
+                                onfail = "Starting switch failed!" )
+        result2 = main.Mininet.assignSwController( "sw11", ONOS1Ip )
+        utilities.assertEquals( expect = main.TRUE, actual = result2,
+                                onpass = "Connect switch to ONOS succeeded!",
+                                onfail = "Connect switch to ONOS failed!" )
+        if result1 and result2:
+            time.sleep( int( main.params[ 'timers' ][ 'RouteDelivery' ] ) )
+            main.Functions.checkRouteNum( main, 3 )
+            main.Functions.checkM2SintentNum( main, 3 )
+            main.Functions.checkP2PintentNum( main, 18 * 2 )
+
+            main.log.debug( main.Mininet.checkFlows( "sw11" ) )
+            main.log.debug( main.Mininet.checkFlows( "sw1" ) )
+            main.log.debug( main.Mininet.checkFlows( "sw7" ) )
+        else:
+            main.log.error( "Starting switch failed!" )
+            main.cleanup()
+            main.exit()
+
+        main.step( "Check whether all flow status are ADDED" )
+        utilities.assertEquals( \
+            expect = main.TRUE,
+            actual = main.ONOScli.checkFlowsState( isPENDING_ADD = False ),
+            onpass = "Flow status is correct!",
+            onfail = "Flow status is wrong!" )
+        # Ping test
+        main.Functions.pingSpeakerToPeer( main, speakers = ["speaker1"],
+                       peers = ["peer64514", "peer64515", "peer64516"],
+                       expectAllSuccess = True )
+        main.Functions.pingSpeakerToPeer( main, speakers = ["speaker2"],
+                       peers = [peer64514, peer64515, peer64516],
+                       expectAllSuccess = True )
+        main.Functions.pingHostToHost( main,
+                        hosts = ["host64514", "host64515", "host64516"],
+                        expectAllSuccess = True )
+
+
+    def CASE11(self, main):
+        import time
+        main.case( "Kill speaker1, check:\
+        route number, P2P intent number, M2S intent number, ping test" )
+        main.info( "Check network status before killing speaker1" )
+        main.Functions.checkRouteNum( main, 3 )
+        main.Functions.checkM2SintentNum( main, 3 )
+        main.Functions.checkP2PintentNum( main, 18 * 2 )
+        main.step( "Check whether all flow status are ADDED" )
+        utilities.assertEquals( \
+            expect = main.TRUE,
+            actual = main.ONOScli.checkFlowsState( isPENDING_ADD = False ),
+            onpass = "Flow status is correct!",
+            onfail = "Flow status is wrong!" )
+
+        main.Functions.pingSpeakerToPeer( main, speakers = ["speaker1"],
+                       peers = ["peer64514", "peer64515", "peer64516"],
+                       expectAllSuccess = True )
+        main.Functions.pingSpeakerToPeer( main, speakers = ["speaker2"],
+                       peers = [peer64514, peer64515, peer64516],
+                       expectAllSuccess = True )
+        main.Functions.pingHostToHost( main,
+                        hosts = ["host64514", "host64515", "host64516"],
+                        expectAllSuccess = True )
+
+        main.step( "Kill speaker1" )
+        result = main.TRUE
+        command = "sudo kill -9 `ps -ef | grep quagga-sdn.conf | grep -v grep | awk '{print $2}'`"
+        result = main.Mininet.node( "root", command )
+        utilities.assert_equals( expect = True,
+                                 actual = ( "quagga-sdn.conf" in result ),
+                                 onpass = "Kill speaker1 succeeded",
+                                 onfail = "Kill speaker1 failed" )
+        if ( "quagga-sdn.conf" not in result ) :
+            main.cleanup()
+            main.exit()
+
+        time.sleep( int( main.params[ 'timers' ][ 'RouteDelivery' ] ) )
+        main.Functions.checkRouteNum( main, 3 )
+        main.Functions.checkM2SintentNum( main, 3 )
+        main.Functions.checkP2PintentNum( main, 18 * 2 )
+
+        main.step( "Check whether all flow status are ADDED" )
+        utilities.assertEquals( \
+            expect = main.TRUE,
+            actual = main.ONOScli.checkFlowsState( isPENDING_ADD = False ),
+            onpass = "Flow status is correct!",
+            onfail = "Flow status is wrong!" )
+
+        '''
+        main.Functions.pingSpeakerToPeer( main, speakers = ["speaker1"],
+                       peers = ["peer64514", "peer64515", "peer64516"],
+                       expectAllSuccess = False )
+        '''
+        main.Functions.pingSpeakerToPeer( main, speakers = ["speaker2"],
+                       peers = [peer64514, peer64515, peer64516],
+                       expectAllSuccess = True )
+        main.Functions.pingHostToHost( main,
+                        hosts = ["host64514", "host64515", "host64516"],
+                        expectAllSuccess = True )
+
+
+    def CASE12( self, main ):
+        import time
+        main.case( "Bring down leader ONOS node, check: \
+        route number, P2P intent number, M2S intent number, ping test" )
+        main.step( "Find out ONOS leader node" )
+        # TODO
+        main.step( "Uninstall ONOS leader node" )
+        uninstallResult = main.ONOSbench.onosUninstall( ONOS2Ip )
+        utilities.assert_equals( expect = main.TRUE,
+                                 actual = uninstallResult,
+                                 onpass = "Uninstall ONOS node2 succeeded",
+                                 onfail = "Uninstall ONOS node2 failed" )
+        if uninstallResult != main.TRUE:
+            main.cleanup()
+            main.exit()
+        time.sleep( int( main.params[ 'timers' ][ 'RouteDelivery' ] ) )
+        main.Functions.checkRouteNum( main, 3 )
+        main.Functions.checkM2SintentNum( main, 3 )
+        main.Functions.checkP2PintentNum( main, 18 * 2 )
+
+        main.step( "Check whether all flow status are ADDED" )
+        utilities.assertEquals( \
+            expect = main.TRUE,
+            actual = main.ONOScli.checkFlowsState( isPENDING_ADD = False ),
+            onpass = "Flow status is correct!",
+            onfail = "Flow status is wrong!" )
+
+        main.Functions.pingSpeakerToPeer( main, speakers = ["speaker1"],
+                       peers = ["peer64514", "peer64515", "peer64516"],
+                       expectAllSuccess = True )
+        main.Functions.pingSpeakerToPeer( main, speakers = ["speaker2"],
+                       peers = [peer64514, peer64515, peer64516],
+                       expectAllSuccess = True )
+        main.Functions.pingHostToHost( main,
+                        hosts = ["host64514", "host64515", "host64516"],
+                        expectAllSuccess = True )