diff --git a/TestON/tests/USECASE/SegmentRouting/SRRouting/SRRouting.params b/TestON/tests/USECASE/SegmentRouting/SRRouting/SRRouting.params
index 0e4de46..7a7dbf5 100644
--- a/TestON/tests/USECASE/SegmentRouting/SRRouting/SRRouting.params
+++ b/TestON/tests/USECASE/SegmentRouting/SRRouting/SRRouting.params
@@ -1,5 +1,5 @@
 <PARAMS>
-    <testcases>1,2,3</testcases>
+    <testcases>1,2,3,4,5,6</testcases>
 
     <GRAPH>
         <nodeCluster>VM</nodeCluster>
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 )
diff --git a/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/SRRoutingTest.py b/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/SRRoutingTest.py
index d2cd2b5..52fb795 100644
--- a/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/SRRoutingTest.py
+++ b/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/SRRoutingTest.py
@@ -30,7 +30,7 @@
         self.default = ''
 
     @staticmethod
-    def runTest( main, test_idx, onosNodes, dhcp, routers, ipv4, ipv6, description, countFlowsGroups=False):
+    def runTest( main, test_idx, onosNodes, dhcp, routers, ipv4, ipv6, description, countFlowsGroups=False, checkExternalHost=False ):
 
         skipPackage = False
         init = False
@@ -46,6 +46,8 @@
 
         main.cfgName = 'COMCAST_CONFIG_ipv4=%d_ipv6=%d_dhcp=%d_routers=%d' % \
             ( ipv4, ipv6, dhcp, routers )
+        if checkExternalHost:
+            main.cfgName += '_external=1'
         main.resultFileName = 'CASE%02d' % test_idx
         main.Cluster.setRunningNode( onosNodes )
 
@@ -76,7 +78,7 @@
             time.sleep( 60 )
 
         # ping hosts
-        # run.pingAll( main, 'CASE%02d' % test_idx, acceptableFailed=5, basedOnIp=True )
+        run.pingAll( main, 'CASE%02d' % test_idx, acceptableFailed=5, basedOnIp=True )
 
         # check flows / groups numbers
         if (countFlowsGroups):
diff --git a/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/chart/COMCAST_CONFIG_ipv4=0_ipv6=1_dhcp=1_routers=1.chart b/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/chart/COMCAST_CONFIG_ipv4=0_ipv6=1_dhcp=1_routers=1.chart
index e77d1c5..4ba753f 100644
--- a/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/chart/COMCAST_CONFIG_ipv4=0_ipv6=1_dhcp=1_routers=1.chart
+++ b/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/chart/COMCAST_CONFIG_ipv4=0_ipv6=1_dhcp=1_routers=1.chart
@@ -1,4 +1,4 @@
 {
-  "ipv6": {"expect": "True",
-   "hosts":["h1v6", "h2v6" ,"h3v6", "h4v6", "h5v6", "h6v6", "h7v6", "h8v6", "h9v6", "h10v6", "h11v6"]}
+  "ipv6": { "expect": "True",
+            "hosts": ["h1v6", "h2v6" ,"h3v6", "h4v6", "h5v6", "h6v6", "h7v6", "h8v6", "h9v6", "h10v6", "h11v6"] }
 }
diff --git a/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/chart/COMCAST_CONFIG_ipv4=0_ipv6=1_dhcp=1_routers=1_external=1.chart b/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/chart/COMCAST_CONFIG_ipv4=0_ipv6=1_dhcp=1_routers=1_external=1.chart
new file mode 100644
index 0000000..1df8fa5
--- /dev/null
+++ b/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/chart/COMCAST_CONFIG_ipv4=0_ipv6=1_dhcp=1_routers=1_external=1.chart
@@ -0,0 +1,7 @@
+{
+  "ipv6": { "expect": "True",
+            "hosts": ["h1v6", "h2v6" ,"h3v6", "h4v6", "h5v6", "h6v6", "h7v6", "h8v6", "h9v6", "h10v6", "h11v6"] },
+  "ipv6-remote": { "expect": "Unidirectional",
+                   "src": ["h1v6", "h2v6" ,"h3v6", "h4v6", "h5v6", "h6v6", "h7v6", "h8v6", "h9v6", "h10v6", "h11v6"],
+                   "dst": ["rh1v6", "rh11v6", "rh2v6", "rh22v6"] }
+}
diff --git a/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/chart/COMCAST_CONFIG_ipv4=1_ipv6=0_dhcp=1_routers=1.chart b/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/chart/COMCAST_CONFIG_ipv4=1_ipv6=0_dhcp=1_routers=1.chart
index 8fc87ff..64b2628 100644
--- a/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/chart/COMCAST_CONFIG_ipv4=1_ipv6=0_dhcp=1_routers=1.chart
+++ b/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/chart/COMCAST_CONFIG_ipv4=1_ipv6=0_dhcp=1_routers=1.chart
@@ -1,4 +1,4 @@
 {
-  "ipv4": {"expect": "True",
-    "hosts":["h1v4", "h2v4" ,"h3v4", "h4v4", "h5v4", "h6v4", "h7v4", "h8v4", "h9v4", "h10v4", "h11v4"]}
+  "ipv4": { "expect": "True",
+            "hosts": ["h1v4", "h2v4" ,"h3v4", "h4v4", "h5v4", "h6v4", "h7v4", "h8v4", "h9v4", "h10v4", "h11v4"] }
 }
diff --git a/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/chart/COMCAST_CONFIG_ipv4=1_ipv6=0_dhcp=1_routers=1_external=1.chart b/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/chart/COMCAST_CONFIG_ipv4=1_ipv6=0_dhcp=1_routers=1_external=1.chart
new file mode 100644
index 0000000..cd36386
--- /dev/null
+++ b/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/chart/COMCAST_CONFIG_ipv4=1_ipv6=0_dhcp=1_routers=1_external=1.chart
@@ -0,0 +1,7 @@
+{
+  "ipv4": { "expect": "True",
+            "hosts": ["h1v4", "h2v4" ,"h3v4", "h4v4", "h5v4", "h6v4", "h7v4", "h8v4", "h9v4", "h10v4", "h11v4"] },
+  "ipv4-remote": { "expect": "Unidirectional",
+                   "src": ["h1v4", "h2v4" ,"h3v4", "h4v4", "h5v4", "h6v4", "h7v4", "h8v4", "h9v4", "h10v4", "h11v4"],
+                   "dst": ["rh1v4", "rh2v4"] }
+}
diff --git a/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/chart/COMCAST_CONFIG_ipv4=1_ipv6=1_dhcp=1_routers=1.chart b/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/chart/COMCAST_CONFIG_ipv4=1_ipv6=1_dhcp=1_routers=1.chart
index cdd437d..a33f56f 100644
--- a/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/chart/COMCAST_CONFIG_ipv4=1_ipv6=1_dhcp=1_routers=1.chart
+++ b/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/chart/COMCAST_CONFIG_ipv4=1_ipv6=1_dhcp=1_routers=1.chart
@@ -1,6 +1,6 @@
 {
-  "ipv6": {"expect": "True",
-	   "hosts": ["h1v6", "h2v6" ,"h3v6", "h4v6", "h5v6", "h6v6", "h7v6", "h8v6", "h9v6", "h10v6", "h11v6"]},
-  "ipv4": {"expect": "True",
-           "hosts": ["h1v4", "h2v4" ,"h3v4", "h4v4", "h5v4", "h6v4", "h7v4", "h8v4", "h9v4", "h10v4", "h11v4"]}
+  "ipv4": { "expect": "True",
+            "hosts": ["h1v4", "h2v4" ,"h3v4", "h4v4", "h5v4", "h6v4", "h7v4", "h8v4", "h9v4", "h10v4", "h11v4"] },
+  "ipv6": { "expect": "True",
+            "hosts": ["h1v6", "h2v6" ,"h3v6", "h4v6", "h5v6", "h6v6", "h7v6", "h8v6", "h9v6", "h10v6", "h11v6"] }
 }
diff --git a/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/chart/COMCAST_CONFIG_ipv4=1_ipv6=1_dhcp=1_routers=1_external=1.chart b/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/chart/COMCAST_CONFIG_ipv4=1_ipv6=1_dhcp=1_routers=1_external=1.chart
new file mode 100644
index 0000000..4af85a4
--- /dev/null
+++ b/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/chart/COMCAST_CONFIG_ipv4=1_ipv6=1_dhcp=1_routers=1_external=1.chart
@@ -0,0 +1,12 @@
+{
+  "ipv4": { "expect": "True",
+            "hosts": ["h1v4", "h2v4" ,"h3v4", "h4v4", "h5v4", "h6v4", "h7v4", "h8v4", "h9v4", "h10v4", "h11v4"] },
+  "ipv4-remote": { "expect": "Unidirectional",
+                   "src": ["h1v4", "h2v4" ,"h3v4", "h4v4", "h5v4", "h6v4", "h7v4", "h8v4", "h9v4", "h10v4", "h11v4"],
+                   "dst": ["rh1v4", "rh2v4"] },
+  "ipv6": { "expect": "True",
+            "hosts": ["h1v6", "h2v6" ,"h3v6", "h4v6", "h5v6", "h6v6", "h7v6", "h8v6", "h9v6", "h10v6", "h11v6"] },
+  "ipv6-remote": { "expect": "Unidirectional",
+                   "src": ["h1v6", "h2v6" ,"h3v6", "h4v6", "h5v6", "h6v6", "h7v6", "h8v6", "h9v6", "h10v6", "h11v6"],
+                   "dst": ["rh1v6", "rh11v6", "rh2v6", "rh22v6"] }
+}
diff --git a/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/count/COMCAST_CONFIG_ipv4=0_ipv6=1_dhcp=1_routers=1_external=1.count b/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/count/COMCAST_CONFIG_ipv4=0_ipv6=1_dhcp=1_routers=1_external=1.count
new file mode 100644
index 0000000..3d66d2e
--- /dev/null
+++ b/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/count/COMCAST_CONFIG_ipv4=0_ipv6=1_dhcp=1_routers=1_external=1.count
@@ -0,0 +1,9 @@
+{
+    "of:0000000000000001": { "flows" : 67, "groups" : 56},
+    "of:0000000000000002": { "flows" : 95, "groups" : 85},
+    "of:0000000000000003": { "flows" : 101, "groups" : 88},
+    "of:0000000000000004": { "flows" : 112, "groups" : 81},
+    "of:0000000000000005": { "flows" : 119, "groups" : 83},
+    "of:0000000000000101": { "flows" : 82, "groups" : 29},
+    "of:0000000000000102": { "flows" : 82, "groups" : 29}
+}
diff --git a/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/count/COMCAST_CONFIG_ipv4=1_ipv6=0_dhcp=1_routers=1_external=1.count b/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/count/COMCAST_CONFIG_ipv4=1_ipv6=0_dhcp=1_routers=1_external=1.count
new file mode 100644
index 0000000..58715b1
--- /dev/null
+++ b/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/count/COMCAST_CONFIG_ipv4=1_ipv6=0_dhcp=1_routers=1_external=1.count
@@ -0,0 +1,9 @@
+{
+    "of:0000000000000001": { "flows" : 64, "groups" : 52},
+    "of:0000000000000002": { "flows" : 91, "groups" : 77},
+    "of:0000000000000003": { "flows" : 97, "groups" : 80},
+    "of:0000000000000004": { "flows" : 108, "groups" : 77},
+    "of:0000000000000005": { "flows" : 115, "groups" : 79},
+    "of:0000000000000101": { "flows" : 74, "groups" : 29},
+    "of:0000000000000102": { "flows" : 74, "groups" : 29}
+}
diff --git a/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/count/COMCAST_CONFIG_ipv4=1_ipv6=1_dhcp=1_routers=1_external=1.count b/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/count/COMCAST_CONFIG_ipv4=1_ipv6=1_dhcp=1_routers=1_external=1.count
new file mode 100644
index 0000000..9b3932e
--- /dev/null
+++ b/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/count/COMCAST_CONFIG_ipv4=1_ipv6=1_dhcp=1_routers=1_external=1.count
@@ -0,0 +1,9 @@
+{
+    "of:0000000000000001": { "flows" : 96, "groups" : 88},
+    "of:0000000000000002": { "flows" : 131, "groups" : 127},
+    "of:0000000000000003": { "flows" : 141, "groups" : 131},
+    "of:0000000000000004": { "flows" : 145, "groups" : 131},
+    "of:0000000000000005": { "flows" : 154, "groups" : 134},
+    "of:0000000000000101": { "flows" : 85, "groups" : 29},
+    "of:0000000000000102": { "flows" : 85, "groups" : 29}
+}
diff --git a/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/json/COMCAST_CONFIG_ipv4=0_ipv6=1_dhcp=1_routers=1_external=1.json b/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/json/COMCAST_CONFIG_ipv4=0_ipv6=1_dhcp=1_routers=1_external=1.json
new file mode 100644
index 0000000..293829e
--- /dev/null
+++ b/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/json/COMCAST_CONFIG_ipv4=0_ipv6=1_dhcp=1_routers=1_external=1.json
@@ -0,0 +1,366 @@
+{
+    "ports" : {
+        "of:0000000000000001/3" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "1000::3ff/120" ],
+                    "vlan-untagged": 10
+                }
+            ]
+        },
+        "of:0000000000000001/4" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "1001::3ff/120" ],
+                    "vlan-untagged": 10
+                }
+            ]
+        },
+        "of:0000000000000002/6" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "1002::3ff/120" ],
+                    "vlan-untagged": 10
+                }
+            ]
+        },
+        "of:0000000000000002/7" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "1003::3ff/120" ],
+                    "vlan-untagged": 15
+                }
+            ]
+        },
+        "of:0000000000000002/8" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "1004::3ff/120" ],
+                    "vlan-tagged": [30]
+                }
+            ]
+        },
+        "of:0000000000000003/8" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "1005::3ff/120" ],
+                    "vlan-tagged": [20]
+                }
+            ]
+        },
+	"of:0000000000000003/9" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "1006::3ff/120" ],
+                    "vlan-tagged": [40]
+                }
+            ]
+        },
+        "of:0000000000000003/6" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "1003::3ff/120" ],
+                    "vlan-untagged": 15
+                }
+            ]
+        },
+        "of:0000000000000003/7" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "1004::3ff/120" ],
+                    "vlan-tagged": [30]
+                }
+            ]
+        }, 
+        "of:0000000000000004/6" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "1007::3ff/120" ],
+                    "vlan-tagged": [30]
+                }
+            ]
+        },
+        "of:0000000000000004/7" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "1008::3ff/120" ],
+                    "vlan-tagged": [40]
+                }
+            ]
+        },
+        "of:0000000000000004/8" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "1009::3ff/120" ],
+                    "vlan-tagged": [40]
+                }
+            ]
+        },
+        "of:0000000000000005/8" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "1010::3ff/120" ],
+                    "vlan-tagged": [40]
+                }
+            ]
+        },
+        "of:0000000000000005/6" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "1008::3ff/120" ],
+                    "vlan-tagged": [40]
+                }
+            ]
+        },
+        "of:0000000000000005/7" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "1009::3ff/120" ],
+                    "vlan-tagged": [40]
+                }
+            ]
+        },
+        "of:0000000000000004/9" : {
+            "interfaces" : [
+                {
+			"ips" : [ "10.0.1.254/24", "10.0.7.254/24", "2000::1ff/120", "2000::7ff/120" ],
+			"vlan-tagged": [110, 170]
+
+                }
+            ]
+        },
+        "of:0000000000000004/10" : {
+            "interfaces" : [
+                {
+			"ips" : [ "10.0.1.254/24", "2000::1ff/120"],
+			"vlan-untagged": 110
+
+                }
+            ]
+        },
+        "of:0000000000000004/11" : {
+            "interfaces" : [
+                {
+			"ips" : [ "10.0.7.254/24", "2000::7ff/120" ],
+			"vlan-untagged": 170
+
+                }
+            ]
+        },
+        "of:0000000000000005/9" : {
+            "interfaces" : [
+                {
+                       "ips" : [ "10.0.5.254/24", "10.0.6.254/24", "2000::5ff/120", "2000::6ff/120" ],
+	               "vlan-tagged": [150, 160]
+                }
+            ]
+        },
+        "of:0000000000000005/10" : {
+            "interfaces" : [
+                {
+                       "ips" : [ "10.0.5.254/24", "2000::5ff/120"],
+	               "vlan-untagged": 150
+                }
+            ]
+        },
+        "of:0000000000000005/11" : {
+            "interfaces" : [
+                {
+                       "ips" : [ "10.0.6.254/24", "2000::6ff/120" ],
+	               "vlan-untagged": 160
+                }
+            ]
+        },
+        "of:0000000000000005/12" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "2000::3ff/120" ],
+                    "vlan-untagged": 15
+                }
+            ]
+        }
+    },
+    "hosts" : { 
+	"00:bb:00:00:00:04/30" : {
+		"basic": {
+			"locations": ["of:0000000000000003/7","of:0000000000000002/8"],
+			"ips": ["1004::3fe"]
+		     }
+	    },
+	"00:bb:00:00:00:05/20" : {
+		"basic": {
+			"locations": ["of:0000000000000003/8"],
+			"ips": ["1005::3fe"]
+		     }
+	    },
+	"00:bb:00:00:01:05/40" : {
+		"basic": {
+			"locations": ["of:0000000000000003/9"],
+			"ips": ["1006::3fe"]
+		     }
+	    },
+	"00:bb:00:00:00:06/30" : {
+		"basic": {
+			"locations": ["of:0000000000000004/6"],
+			"ips": ["1007::3fe"]
+		     }
+	    },
+	"00:bb:00:00:00:07/40" : {
+		"basic": {
+			"locations": ["of:0000000000000005/6", "of:0000000000000004/7"],
+			"ips": ["1008::3fe"]
+		     }
+	    },
+	"00:bb:00:00:00:08/40" : {
+		"basic": {
+			"locations": ["of:0000000000000004/8","of:0000000000000005/7"],
+			"ips": ["1009::3fe"]
+		     }
+	    },
+	"00:bb:00:00:00:0A/40" : {
+		"basic": {
+			"locations": ["of:0000000000000005/8"],
+			"ips": ["1010::3fe"]
+		     }
+	    }
+    },
+    "devices" : {
+        "of:0000000000000001" : {
+            "segmentrouting" : {
+                "name" : "s001",
+                "ipv4NodeSid" : 1,
+		"ipv6NodeSid" : 101,
+		"ipv6Loopback" : "2000::c0a8:0001",
+                "ipv4Loopback" : "192.168.0.1",
+                "routerMac" : "00:00:00:00:00:01",
+                "isEdgeRouter" : true,
+                "adjacencySids" : []
+            },
+            "basic" : {
+                "driver" : "ofdpa-ovs",
+		"latitude":34,	
+		"longitude":-105
+            }
+        },
+        "of:0000000000000002" : {
+            "segmentrouting" : {
+                "name" : "s002",
+                "ipv4NodeSid" : 2,
+                "ipv4Loopback" : "192.168.0.2",
+		"ipv6NodeSid" : 102,
+		"ipv6Loopback" : "2000::c0a8:0002",
+                "routerMac" : "00:00:00:00:00:02",
+                "isEdgeRouter" : true,
+                "pairLocalPort" : 5,
+                "pairDeviceId": "of:0000000000000003",
+                "adjacencySids" : []
+            },
+            "basic" : {
+                "driver" : "ofdpa-ovs",
+		"latitude":34,	
+		"longitude":-95
+            }
+        },
+        "of:0000000000000003" : {
+            "segmentrouting" : {
+                "name" : "s003",
+                "ipv4NodeSid" : 3,
+                "ipv4Loopback" : "192.168.0.3",
+        	"ipv6NodeSid" : 103,
+		"ipv6Loopback" : "2000::c0a8:0003",
+                "routerMac" : "00:00:00:00:00:02",
+                "isEdgeRouter" : true,
+                "pairLocalPort" : 5,
+                "pairDeviceId": "of:0000000000000002",
+                "adjacencySids" : []
+            },
+            "basic" : {
+                "driver" : "ofdpa-ovs",
+		"latitude":34,	
+		"longitude":-90
+            }
+        },
+        "of:0000000000000004" : {
+            "segmentrouting" : {
+                "name" : "s004",
+                "ipv4NodeSid" : 4,
+                "ipv4Loopback" : "192.168.0.4",
+		"ipv6NodeSid" : 104,
+		"ipv6Loopback" : "2000::c0a8:0004",        
+                "routerMac" : "00:00:00:00:00:04",
+                "isEdgeRouter" : true,
+                "pairLocalPort" : 5,
+                "pairDeviceId": "of:0000000000000005",
+                "adjacencySids" : []
+            },
+            "basic" : {
+                "driver" : "ofdpa-ovs",
+		"latitude":34,	
+		"longitude":-85
+            }
+        },
+        "of:0000000000000005" : {
+            "segmentrouting" : {
+                "name" : "s005",
+                "ipv4NodeSid" : 5,
+                "ipv4Loopback" : "192.168.0.5",
+		"ipv6NodeSid" : 105,
+		"ipv6Loopback" : "2000::c0a8:0005", 
+                "routerMac" : "00:00:00:00:00:04",
+                "isEdgeRouter" : true,
+                "pairLocalPort" : 5,
+                "pairDeviceId": "of:0000000000000004",
+                "adjacencySids" : []
+            },
+            "basic" : {
+                "driver" : "ofdpa-ovs",
+		"latitude":34,	
+		"longitude":-80
+            }
+        },
+        "of:0000000000000101" : {
+            "segmentrouting" : {
+                "name" : "s101",
+                "ipv4NodeSid" : 101,
+                "ipv4Loopback" : "192.168.0.101",
+		"ipv6NodeSid" : 201,
+		"ipv6Loopback" : "2000::c0a8:0101", 
+                "routerMac" : "00:00:00:00:01:01",
+                "isEdgeRouter" : false,
+                "adjacencySids" : []
+            },
+            "basic" : {
+                "driver" : "ofdpa-ovs",
+		"latitude":42,
+                "longitude":-100
+            }
+        },
+        "of:0000000000000102" : {
+            "segmentrouting" : {
+                "name" : "s102",
+                "ipv4NodeSid" : 102,
+                "ipv4Loopback" : "192.168.0.102",
+		"ipv6NodeSid" : 202,
+		"ipv6Loopback" : "2000::c0a8:0202",
+                "routerMac" : "00:00:00:00:01:02",
+                "isEdgeRouter" : false,
+                "adjacencySids" : []
+            },
+            "basic" : {
+                 "driver" : "ofdpa-ovs",
+		 "latitude":42,
+		 "longitude":-95
+            }
+        }   
+    },
+    "apps" : {
+        "org.onosproject.dhcprelay" : {
+            "default": [
+                {
+                    "dhcpServerConnectPoint": "of:0000000000000005/12",
+                    "serverIps": ["2000::3fd"]
+                }
+            ]
+        }
+    }
+}
diff --git a/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/json/COMCAST_CONFIG_ipv4=1_ipv6=0_dhcp=1_routers=1_external=1.json b/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/json/COMCAST_CONFIG_ipv4=1_ipv6=0_dhcp=1_routers=1_external=1.json
new file mode 100644
index 0000000..59284ba
--- /dev/null
+++ b/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/json/COMCAST_CONFIG_ipv4=1_ipv6=0_dhcp=1_routers=1_external=1.json
@@ -0,0 +1,308 @@
+{
+    "ports" : {
+        "of:0000000000000001/3" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "10.1.0.254/24" ],
+                    "vlan-untagged": 10
+                }
+            ]
+        },
+        "of:0000000000000001/4" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "10.1.10.254/24" ],
+                    "vlan-untagged": 10
+                }
+            ]
+        },
+        "of:0000000000000002/6" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "10.2.0.254/24" ],
+                    "vlan-untagged": 10
+                }
+            ]
+        },
+        "of:0000000000000002/7" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "10.2.30.254/24" ],
+                    "vlan-untagged": 15
+                }
+            ]
+        },
+        "of:0000000000000002/8" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "10.2.20.254/24" ],
+                    "vlan-tagged": [30]
+                }
+            ]
+        },
+        "of:0000000000000003/8" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "10.2.10.254/24" ],
+                    "vlan-tagged": [20]
+                }
+            ]
+        },
+	"of:0000000000000003/9" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "10.2.40.254/24" ],
+                    "vlan-tagged": [40]
+                }
+            ]
+        },
+        "of:0000000000000003/6" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "10.2.30.254/24" ],
+                    "vlan-untagged": 15
+                }
+            ]
+        },
+        "of:0000000000000003/7" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "10.2.20.254/24" ],
+                    "vlan-tagged": [30]
+                }
+            ]
+        }, 
+        "of:0000000000000004/6" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "10.3.0.254/24" ],
+                    "vlan-tagged": [30]
+                }
+            ]
+        },
+        "of:0000000000000004/7" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "10.3.10.254/24" ],
+                    "vlan-tagged": [40]
+                }
+            ]
+        },
+        "of:0000000000000004/8" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "10.3.30.254/24" ],
+                    "vlan-tagged": [40]
+                }
+            ]
+        },
+        "of:0000000000000005/8" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "10.3.20.254/24" ],
+                    "vlan-tagged": [40]
+                }
+            ]
+        },
+        "of:0000000000000005/6" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "10.3.10.254/24" ],
+                    "vlan-tagged": [40]
+                }
+            ]
+        },
+        "of:0000000000000005/7" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "10.3.30.254/24" ],
+                    "vlan-tagged": [40]
+                }
+            ]
+        },
+        "of:0000000000000004/9" : {
+            "interfaces" : [
+                {
+			"ips" : [ "10.0.1.254/24", "10.0.7.254/24", "2000::1ff/120", "2000::7ff/120" ],
+			"vlan-tagged": [110, 170]
+
+                }
+            ]
+        },
+        "of:0000000000000004/10" : {
+            "interfaces" : [
+                {
+			"ips" : [ "10.0.1.254/24", "2000::1ff/120"],
+			"vlan-untagged": 110
+
+                }
+            ]
+        },
+        "of:0000000000000004/11" : {
+            "interfaces" : [
+                {
+			"ips" : [ "10.0.7.254/24", "2000::7ff/120" ],
+			"vlan-untagged": 170
+
+                }
+            ]
+        },
+        "of:0000000000000005/9" : {
+            "interfaces" : [
+                {
+                       "ips" : [ "10.0.5.254/24", "10.0.6.254/24", "2000::5ff/120", "2000::6ff/120" ],
+	               "vlan-tagged": [150, 160]
+                }
+            ]
+        },
+        "of:0000000000000005/10" : {
+            "interfaces" : [
+                {
+                       "ips" : [ "10.0.5.254/24", "2000::5ff/120"],
+	               "vlan-untagged": 150
+                }
+            ]
+        },
+        "of:0000000000000005/11" : {
+            "interfaces" : [
+                {
+                       "ips" : [ "10.0.6.254/24", "2000::6ff/120" ],
+	               "vlan-untagged": 160
+                }
+            ]
+        },
+        "of:0000000000000005/12" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "10.0.3.254/24" ],
+                    "vlan-untagged": 15
+                }
+            ]
+        }
+    },
+    "devices" : {
+        "of:0000000000000001" : {
+            "segmentrouting" : {
+                "name" : "s001",
+                "ipv4NodeSid" : 1,
+                "ipv4Loopback" : "192.168.0.1",
+                "routerMac" : "00:00:00:00:00:01",
+                "isEdgeRouter" : true,
+                "adjacencySids" : []
+            },
+            "basic" : {
+                "driver" : "ofdpa-ovs",
+		"latitude":34,	
+		"longitude":-105
+            }
+        },
+        "of:0000000000000002" : {
+            "segmentrouting" : {
+                "name" : "s002",
+                "ipv4NodeSid" : 2,
+                "ipv4Loopback" : "192.168.0.2",
+                "routerMac" : "00:00:00:00:00:02",
+                "isEdgeRouter" : true,
+                "pairLocalPort" : 5,
+                "pairDeviceId": "of:0000000000000003",
+                "adjacencySids" : []
+            },
+            "basic" : {
+                "driver" : "ofdpa-ovs",
+		"latitude":34,	
+		"longitude":-95
+            }
+        },
+        "of:0000000000000003" : {
+            "segmentrouting" : {
+                "name" : "s003",
+                "ipv4NodeSid" : 3,
+                "ipv4Loopback" : "192.168.0.3",
+                "routerMac" : "00:00:00:00:00:02",
+                "isEdgeRouter" : true,
+                "pairLocalPort" : 5,
+                "pairDeviceId": "of:0000000000000002",
+                "adjacencySids" : []
+            },
+            "basic" : {
+                "driver" : "ofdpa-ovs",
+		"latitude":34,	
+		"longitude":-90
+            }
+        },
+        "of:0000000000000004" : {
+            "segmentrouting" : {
+                "name" : "s004",
+                "ipv4NodeSid" : 4,
+                "ipv4Loopback" : "192.168.0.4",
+                "routerMac" : "00:00:00:00:00:04",
+                "isEdgeRouter" : true,
+                "pairLocalPort" : 5,
+                "pairDeviceId": "of:0000000000000005",
+                "adjacencySids" : []
+            },
+            "basic" : {
+                "driver" : "ofdpa-ovs",
+		"latitude":34,	
+		"longitude":-85
+            }
+        },
+        "of:0000000000000005" : {
+            "segmentrouting" : {
+                "name" : "s005",
+                "ipv4NodeSid" : 5,
+                "ipv4Loopback" : "192.168.0.5",
+                "routerMac" : "00:00:00:00:00:04",
+                "isEdgeRouter" : true,
+                "pairLocalPort" : 5,
+                "pairDeviceId": "of:0000000000000004",
+                "adjacencySids" : []
+            },
+            "basic" : {
+                "driver" : "ofdpa-ovs",
+		"latitude":34,	
+		"longitude":-80
+            }
+        },
+        "of:0000000000000101" : {
+            "segmentrouting" : {
+                "name" : "s101",
+                "ipv4NodeSid" : 101,
+                "ipv4Loopback" : "192.168.0.101",
+                "routerMac" : "00:00:00:00:01:01",
+                "isEdgeRouter" : false,
+                "adjacencySids" : []
+            },
+            "basic" : {
+                "driver" : "ofdpa-ovs",
+		"latitude":42,
+                "longitude":-100
+            }
+        },
+        "of:0000000000000102" : {
+            "segmentrouting" : {
+                "name" : "s102",
+                "ipv4NodeSid" : 102,
+                "ipv4Loopback" : "192.168.0.102",
+                "routerMac" : "00:00:00:00:01:02",
+                "isEdgeRouter" : false,
+                "adjacencySids" : []
+            },
+            "basic" : {
+                 "driver" : "ofdpa-ovs",
+		 "latitude":42,
+		 "longitude":-95
+            }
+        }   
+    },
+    "apps" : {
+       "org.onosproject.dhcprelay" : {
+            "default": [
+                {
+                    "dhcpServerConnectPoint": "of:0000000000000005/12",
+                    "serverIps": ["10.0.3.253"]
+                }
+            ]
+        }
+    }
+}
diff --git a/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/json/COMCAST_CONFIG_ipv4=1_ipv6=1_dhcp=1_routers=1_external=1.json b/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/json/COMCAST_CONFIG_ipv4=1_ipv6=1_dhcp=1_routers=1_external=1.json
new file mode 100644
index 0000000..7294d8b
--- /dev/null
+++ b/TestON/tests/USECASE/SegmentRouting/SRRouting/dependencies/json/COMCAST_CONFIG_ipv4=1_ipv6=1_dhcp=1_routers=1_external=1.json
@@ -0,0 +1,486 @@
+{
+    "ports" : {
+        "of:0000000000000001/3" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "1000::3ff/120" ],
+                    "vlan-untagged": 10
+                }
+            ]
+        },
+        "of:0000000000000001/4" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "1001::3ff/120" ],
+                    "vlan-untagged": 10
+                }
+            ]
+        },
+        "of:0000000000000001/5" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "10.1.0.254/24" ],
+                    "vlan-untagged": 10
+                }
+            ]
+        },
+        "of:0000000000000001/6" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "10.1.10.254/24" ],
+                    "vlan-untagged": 10
+                }
+            ]
+        },
+        "of:0000000000000002/6" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "1002::3ff/120" ],
+                    "vlan-untagged": 10
+                }
+            ]
+        },
+        "of:0000000000000002/7" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "1003::3ff/120" ],
+                    "vlan-untagged": 15
+                }
+            ]
+        },
+        "of:0000000000000002/8" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "1004::3ff/120" ],
+                    "vlan-tagged": [30]
+                }
+            ]
+        },
+        "of:0000000000000002/9" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "10.2.0.254/24" ],
+                    "vlan-untagged": 10
+                }
+            ]
+        },
+        "of:0000000000000002/10" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "10.2.30.254/24" ],
+                    "vlan-untagged": 16
+                }
+            ]
+        },
+        "of:0000000000000002/11" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "10.2.20.254/24" ],
+                    "vlan-tagged": [30]
+                }
+            ]
+        },
+        "of:0000000000000003/6" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "1003::3ff/120" ],
+                    "vlan-untagged": 15
+                }
+            ]
+        },
+        "of:0000000000000003/7" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "1004::3ff/120" ],
+                    "vlan-tagged": [30]
+                }
+            ]
+        }, 
+        "of:0000000000000003/8" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "1005::3ff/120" ],
+                    "vlan-tagged": [20]
+                }
+            ]
+        },
+	"of:0000000000000003/9" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "1006::3ff/120" ],
+                    "vlan-tagged": [40]
+                }
+            ]
+        },
+        "of:0000000000000003/10" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "10.2.30.254/24" ],
+                    "vlan-untagged": 15
+                }
+            ]
+        },
+        "of:0000000000000003/11" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "10.2.20.254/24" ],
+                    "vlan-tagged": [30]
+                }
+            ]
+        }, 
+        "of:0000000000000003/12" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "10.2.10.254/24" ],
+                    "vlan-tagged": [20]
+                }
+            ]
+        },
+	"of:0000000000000003/13" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "10.2.40.254/24" ],
+                    "vlan-tagged": [40]
+                }
+            ]
+        },
+        "of:0000000000000004/6" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "1007::3ff/120" ],
+                    "vlan-tagged": [30]
+                }
+            ]
+        },
+        "of:0000000000000004/7" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "1008::3ff/120" ],
+                    "vlan-tagged": [40]
+                }
+            ]
+        },
+        "of:0000000000000004/8" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "1009::3ff/120" ],
+                    "vlan-tagged": [40]
+                }
+            ]
+        },
+        "of:0000000000000004/9" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "10.3.0.254/24" ],
+                    "vlan-tagged": [30]
+                }
+            ]
+        },
+        "of:0000000000000004/10" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "10.3.10.254/24" ],
+                    "vlan-tagged": [40]
+                }
+            ]
+        },
+        "of:0000000000000004/11" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "10.3.30.254/24" ],
+                    "vlan-tagged": [40]
+                }
+            ]
+        },
+        "of:0000000000000004/12" : {
+            "interfaces" : [
+                {
+			"ips" : [ "10.0.1.254/24", "10.0.7.254/24", "2000::1ff/120", "2000::7ff/120" ],
+			"vlan-tagged": [110, 170]
+
+                }
+            ]
+        },
+        "of:0000000000000004/13" : {
+            "interfaces" : [
+                {
+			"ips" : [ "10.0.1.254/24", "2000::1ff/120"],
+			"vlan-untagged": 110
+
+                }
+            ]
+        },
+        "of:0000000000000004/14" : {
+            "interfaces" : [
+                {
+			"ips" : [ "10.0.7.254/24", "2000::7ff/120" ],
+			"vlan-untagged": 170
+
+                }
+            ]
+        },
+        "of:0000000000000005/6" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "1008::3ff/120" ],
+                    "vlan-tagged": [40]
+                }
+            ]
+        },
+        "of:0000000000000005/7" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "1009::3ff/120" ],
+                    "vlan-tagged": [40]
+                }
+            ]
+        },
+        "of:0000000000000005/8" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "1010::3ff/120" ],
+                    "vlan-tagged": [40]
+                }
+            ]
+        },
+        "of:0000000000000005/9" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "10.3.10.254/24" ],
+                    "vlan-tagged": [40]
+                }
+            ]
+        },
+        "of:0000000000000005/10" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "10.3.30.254/24" ],
+                    "vlan-tagged": [40]
+                }
+            ]
+        },
+        "of:0000000000000005/11" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "10.3.20.254/24" ],
+                    "vlan-tagged": [40]
+                }
+            ]
+        },
+        "of:0000000000000005/12" : {
+            "interfaces" : [
+                {
+                       "ips" : [ "10.0.5.254/24", "10.0.6.254/24", "2000::5ff/120", "2000::6ff/120" ],
+	               "vlan-tagged": [150, 160]
+                }
+            ]
+        },
+        "of:0000000000000005/13" : {
+            "interfaces" : [
+                {
+                       "ips" : [ "10.0.5.254/24", "2000::5ff/120"],
+	               "vlan-untagged": 150
+                }
+            ]
+        },
+        "of:0000000000000005/14" : {
+            "interfaces" : [
+                {
+                       "ips" : [ "10.0.6.254/24", "2000::6ff/120" ],
+	               "vlan-untagged": 160
+                }
+            ]
+        },
+        "of:0000000000000005/15" : {
+            "interfaces" : [
+                {
+                    "ips" : [ "10.0.3.254/24", "2000::3ff/120" ],
+                    "vlan-untagged": 15
+                }
+            ]
+        }
+    },
+    "hosts" : { 
+	"00:bb:00:00:00:04/30" : {
+		"basic": {
+			"locations": ["of:0000000000000003/7","of:0000000000000002/8"],
+			"ips": ["1004::3fe"]
+		     }
+	    },
+	"00:bb:00:00:00:05/20" : {
+		"basic": {
+			"locations": ["of:0000000000000003/8"],
+			"ips": ["1005::3fe"]
+		     }
+	    },
+	"00:bb:00:00:01:05/40" : {
+		"basic": {
+			"locations": ["of:0000000000000003/9"],
+			"ips": ["1006::3fe"]
+		     }
+	    },
+	"00:bb:00:00:00:06/30" : {
+		"basic": {
+			"locations": ["of:0000000000000004/6"],
+			"ips": ["1007::3fe"]
+		     }
+	    },
+	"00:bb:00:00:00:07/40" : {
+		"basic": {
+			"locations": ["of:0000000000000005/6", "of:0000000000000004/7"],
+			"ips": ["1008::3fe"]
+		     }
+	    },
+	"00:bb:00:00:00:08/40" : {
+		"basic": {
+			"locations": ["of:0000000000000004/8","of:0000000000000005/7"],
+			"ips": ["1009::3fe"]
+		     }
+	    },
+	"00:bb:00:00:00:0A/40" : {
+		"basic": {
+			"locations": ["of:0000000000000005/8"],
+			"ips": ["1010::3fe"]
+		     }
+	    }
+    },
+    "devices" : {
+        "of:0000000000000001" : {
+            "segmentrouting" : {
+                "name" : "s001",
+                "ipv4NodeSid" : 1,
+		"ipv6NodeSid" : 101,
+		"ipv6Loopback" : "2000::c0a8:0001",
+                "ipv4Loopback" : "192.168.0.1",
+                "routerMac" : "00:00:00:00:00:01",
+                "isEdgeRouter" : true,
+                "adjacencySids" : []
+            },
+            "basic" : {
+                "driver" : "ofdpa-ovs",
+		"latitude":34,	
+		"longitude":-105
+            }
+        },
+        "of:0000000000000002" : {
+            "segmentrouting" : {
+                "name" : "s002",
+                "ipv4NodeSid" : 2,
+                "ipv4Loopback" : "192.168.0.2",
+		"ipv6NodeSid" : 102,
+		"ipv6Loopback" : "2000::c0a8:0002",
+                "routerMac" : "00:00:00:00:00:02",
+                "isEdgeRouter" : true,
+                "pairLocalPort" : 5,
+                "pairDeviceId": "of:0000000000000003",
+                "adjacencySids" : []
+            },
+            "basic" : {
+                "driver" : "ofdpa-ovs",
+		"latitude":34,	
+		"longitude":-95
+            }
+        },
+        "of:0000000000000003" : {
+            "segmentrouting" : {
+                "name" : "s003",
+                "ipv4NodeSid" : 3,
+                "ipv4Loopback" : "192.168.0.3",
+        	"ipv6NodeSid" : 103,
+		"ipv6Loopback" : "2000::c0a8:0003",
+                "routerMac" : "00:00:00:00:00:02",
+                "isEdgeRouter" : true,
+                "pairLocalPort" : 5,
+                "pairDeviceId": "of:0000000000000002",
+                "adjacencySids" : []
+            },
+            "basic" : {
+                "driver" : "ofdpa-ovs",
+		"latitude":34,	
+		"longitude":-90
+            }
+        },
+        "of:0000000000000004" : {
+            "segmentrouting" : {
+                "name" : "s004",
+                "ipv4NodeSid" : 4,
+                "ipv4Loopback" : "192.168.0.4",
+		"ipv6NodeSid" : 104,
+		"ipv6Loopback" : "2000::c0a8:0004",        
+                "routerMac" : "00:00:00:00:00:04",
+                "isEdgeRouter" : true,
+                "pairLocalPort" : 5,
+                "pairDeviceId": "of:0000000000000005",
+                "adjacencySids" : []
+            },
+            "basic" : {
+                "driver" : "ofdpa-ovs",
+		"latitude":34,	
+		"longitude":-85
+            }
+        },
+        "of:0000000000000005" : {
+            "segmentrouting" : {
+                "name" : "s005",
+                "ipv4NodeSid" : 5,
+                "ipv4Loopback" : "192.168.0.5",
+		"ipv6NodeSid" : 105,
+		"ipv6Loopback" : "2000::c0a8:0005", 
+                "routerMac" : "00:00:00:00:00:04",
+                "isEdgeRouter" : true,
+                "pairLocalPort" : 5,
+                "pairDeviceId": "of:0000000000000004",
+                "adjacencySids" : []
+            },
+            "basic" : {
+                "driver" : "ofdpa-ovs",
+		"latitude":34,	
+		"longitude":-80
+            }
+        },
+        "of:0000000000000101" : {
+            "segmentrouting" : {
+                "name" : "s101",
+                "ipv4NodeSid" : 101,
+                "ipv4Loopback" : "192.168.0.101",
+		"ipv6NodeSid" : 201,
+		"ipv6Loopback" : "2000::c0a8:0101", 
+                "routerMac" : "00:00:00:00:01:01",
+                "isEdgeRouter" : false,
+                "adjacencySids" : []
+            },
+            "basic" : {
+                "driver" : "ofdpa-ovs",
+		"latitude":42,
+                "longitude":-100
+            }
+        },
+        "of:0000000000000102" : {
+            "segmentrouting" : {
+                "name" : "s102",
+                "ipv4NodeSid" : 102,
+                "ipv4Loopback" : "192.168.0.102",
+		"ipv6NodeSid" : 202,
+		"ipv6Loopback" : "2000::c0a8:0202",
+                "routerMac" : "00:00:00:00:01:02",
+                "isEdgeRouter" : false,
+                "adjacencySids" : []
+            },
+            "basic" : {
+                 "driver" : "ofdpa-ovs",
+		 "latitude":42,
+		 "longitude":-95
+            }
+        }   
+    },
+    "apps" : {
+        "org.onosproject.dhcprelay" : {
+            "default": [
+                {
+                    "dhcpServerConnectPoint": "of:0000000000000005/15",
+                    "serverIps": ["10.0.3.253", "2000::3fd"]
+                }
+            ]
+        }
+    }
+}
diff --git a/TestON/tests/USECASE/SegmentRouting/dependencies/Testcaselib.py b/TestON/tests/USECASE/SegmentRouting/dependencies/Testcaselib.py
index dd93fe4..aa9d1a4 100644
--- a/TestON/tests/USECASE/SegmentRouting/dependencies/Testcaselib.py
+++ b/TestON/tests/USECASE/SegmentRouting/dependencies/Testcaselib.py
@@ -355,38 +355,63 @@
     @staticmethod
     def pingAll( main, tag="", dumpflows=True, acceptableFailed=0, basedOnIp=False ):
         '''
-        acceptableFailed: max number of acceptable failed pings. Only works for ping6
+        Verify connectivity between hosts according to the ping chart
+        acceptableFailed: max number of acceptable failed pings.
         basedOnIp: if True, run ping or ping6 based on suffix of host names
         '''
-        main.log.report( "Check full connectivity" )
-        print main.pingChart
+        main.log.report( "Check host connectivity" )
+        main.log.debug( "Ping chart: %s" % main.pingChart )
         if tag == "":
             tag = 'CASE%d' % main.CurrentTestCaseNumber
         for entry in main.pingChart.itervalues():
-            print entry
-            hosts, expect = entry[ 'hosts' ], entry[ 'expect' ]
-            try:
-                expect = main.TRUE if str(expect).lower() == 'true' else main.FALSE
-            except:
-                expect = main.FALSE
-            main.step( "Connectivity for %s %s" % ( str( hosts ), tag ) )
-
-            if basedOnIp:
-                if ("v4" in hosts[0]):
+            main.log.debug( "Entry in ping chart: %s" % entry )
+            expect = entry[ 'expect' ]
+            if expect == "Unidirectional":
+                # Verify ping from each src host to each dst host
+                src = entry[ 'src' ]
+                dst = entry[ 'dst' ]
+                expect = main.TRUE
+                main.step( "Verify unidirectional connectivity from %s to %s with tag %s" % ( str( src ), str( dst ), tag ) )
+                if basedOnIp:
+                    if ("v4" in src[0]):
+                        pa = main.Network.pingallHostsUnidirectional( src, dst, acceptableFailed=acceptableFailed )
+                        utilities.assert_equals( expect=expect, actual=pa,
+                                                 onpass="IPv4 connectivity successfully tested",
+                                                 onfail="IPv4 connectivity failed" )
+                    if ("v6" in src[0]):
+                        pa = main.Network.pingallHostsUnidirectional( src, dst, ipv6=True, acceptableFailed=acceptableFailed )
+                        utilities.assert_equals( expect=expect, actual=pa,
+                                                 onpass="IPv6 connectivity successfully tested",
+                                                 onfail="IPv6 connectivity failed" )
+                else:
+                    pa = main.Network.pingallHostsUnidirectional( src, dst, acceptableFailed=acceptableFailed )
+                    utilities.assert_equals( expect=expect, actual=pa,
+                                             onpass="IP connectivity successfully tested",
+                                             onfail="IP connectivity failed" )
+            else:
+                # Verify ping between each host pair
+                hosts = entry[ 'hosts' ]
+                try:
+                    expect = main.TRUE if str(expect).lower() == 'true' else main.FALSE
+                except:
+                    expect = main.FALSE
+                main.step( "Verify full connectivity for %s with tag %s" % ( str( hosts ), tag ) )
+                if basedOnIp:
+                    if ("v4" in hosts[0]):
+                        pa = main.Network.pingallHosts( hosts )
+                        utilities.assert_equals( expect=expect, actual=pa,
+                                                 onpass="IPv4 connectivity successfully tested",
+                                                 onfail="IPv4 connectivity failed" )
+                    if ("v6" in hosts[0]):
+                        pa = main.Network.pingIpv6Hosts( hosts, acceptableFailed=acceptableFailed )
+                        utilities.assert_equals( expect=expect, actual=pa,
+                                                 onpass="IPv6 connectivity successfully tested",
+                                                 onfail="IPv6 connectivity failed" )
+                else:
                     pa = main.Network.pingallHosts( hosts )
                     utilities.assert_equals( expect=expect, actual=pa,
-                                             onpass="IPv4 connectivity successfully tested",
-                                             onfail="IPv4 connectivity failed" )
-                if ("v6" in hosts[0]):
-                    pa = main.Network.pingIpv6Hosts( hosts, acceptableFailed=acceptableFailed )
-                    utilities.assert_equals( expect=expect, actual=pa,
-                                             onpass="IPv6 connectivity successfully tested",
-                                             onfail="IPv6 connectivity failed" )
-            else:
-                pa = main.Network.pingallHosts( hosts )
-                utilities.assert_equals( expect=expect, actual=pa,
-                                         onpass="IP connectivity successfully tested",
-                                         onfail="IP connectivity failed" )
+                                             onpass="IP connectivity successfully tested",
+                                             onfail="IP connectivity failed" )
 
         if dumpflows:
             main.ONOSbench.dumpONOSCmd( main.Cluster.active( 0 ).ipAddress,