diff --git a/TestON/tests/USECASE/SegmentRouting/SRRouting/SRRouting.py b/TestON/tests/USECASE/SegmentRouting/SRRouting/SRRouting.py
index d239219..921c6e2 100644
--- a/TestON/tests/USECASE/SegmentRouting/SRRouting/SRRouting.py
+++ b/TestON/tests/USECASE/SegmentRouting/SRRouting/SRRouting.py
@@ -53,3 +53,54 @@
                                ipv6=1,
                                countFlowsGroups=False,
                                description="Ping between all ipv4 and ipv6 hosts in the topology")
+
+    def CASE4( self, main ):
+        """
+        Ping between all ipv4 hosts in the topology and check connectivity to external ipv4 hosts
+        """
+
+        from tests.USECASE.SegmentRouting.SRRouting.dependencies.SRRoutingTest import SRRoutingTest
+
+        SRRoutingTest.runTest( main,
+                               test_idx=4,
+                               onosNodes=3,
+                               dhcp=1,
+                               routers=1,
+                               ipv4=1,
+                               ipv6=0,
+                               description="Ping between all ipv4 hosts in the topology and check connectivity to external hosts",
+                               checkExternalHost=True )
+
+    def CASE5( self, main ):
+        """
+        Ping between all ipv6 hosts in the topology and check connectivity to external ipv6 hosts
+        """
+
+        from tests.USECASE.SegmentRouting.SRRouting.dependencies.SRRoutingTest import SRRoutingTest
+
+        SRRoutingTest.runTest( main,
+                               test_idx=5,
+                               onosNodes=3,
+                               dhcp=1,
+                               routers=1,
+                               ipv4=0,
+                               ipv6=1,
+                               description="Ping between all ipv6 hosts in the topology and check connectivity to external hosts",
+                               checkExternalHost=True )
+
+    def CASE6( self, main ):
+        """
+        Ping between all ipv4 and ipv6 hosts in the topology and check connectivity to external ipv4 and ipv6 hosts
+        """
+
+        from tests.USECASE.SegmentRouting.SRRouting.dependencies.SRRoutingTest import SRRoutingTest
+
+        SRRoutingTest.runTest( main,
+                               test_idx=6,
+                               onosNodes=3,
+                               dhcp=1,
+                               routers=1,
+                               ipv4=1,
+                               ipv6=1,
+                               description="Ping between all ipv4 and ipv6 hosts in the topology and check connectivity to external hosts",
+                               checkExternalHost=True )