diff --git a/TestON/tests/USECASE/SegmentRouting/SRLinkFailure/SRLinkFailure.py b/TestON/tests/USECASE/SegmentRouting/SRLinkFailure/SRLinkFailure.py
index 98c0d8d..cb95b18 100755
--- a/TestON/tests/USECASE/SegmentRouting/SRLinkFailure/SRLinkFailure.py
+++ b/TestON/tests/USECASE/SegmentRouting/SRLinkFailure/SRLinkFailure.py
@@ -46,7 +46,7 @@
         main.case( description )
 
         main.cfgName = '2x2'
-        main.numCtrls = 1
+        main.Cluster.setRunningNode( 1 )
         run.installOnos( main )
         run.startMininet( main, 'cord_fabric.py' )
         # pre-configured routing and bridging test
@@ -80,7 +80,7 @@
         description = "Bridging and Routing sanity test with 4x4 Leaf-spine "
         main.case( description )
         main.cfgName = '4x4'
-        main.numCtrls = 1
+        main.Cluster.setRunningNode( 1 )
         run.installOnos( main )
         run.startMininet( main, 'cord_fabric.py', args="--leaf=4 --spine=4" )
         # pre-configured routing and bridging test
@@ -114,7 +114,7 @@
         description = "Bridging and Routing sanity test with 2x2 Leaf-spine "
         main.case( description )
         main.cfgName = '2x2'
-        main.numCtrls = 3
+        main.Cluster.setRunningNode( 3 )
         run.installOnos( main )
         run.startMininet( main, 'cord_fabric.py' )
         # pre-configured routing and bridging test
@@ -148,7 +148,7 @@
         description = "Bridging and Routing sanity test with 4x4 Leaf-spine "
         main.case( description )
         main.cfgName = '4x4'
-        main.numCtrls = 3
+        main.Cluster.setRunningNode( 3 )
         run.installOnos( main )
         run.startMininet( main, 'cord_fabric.py', args="--leaf=4 --spine=4" )
         # pre-configured routing and bridging test