STC scenario to test administrative enable and disable of a port

Change-Id: I69026a7ada071bf06f3505666712778350b6969f
diff --git a/tools/test/topos/default.recipe b/tools/test/topos/default.recipe
index b08c896..c6b4e55 100644
--- a/tools/test/topos/default.recipe
+++ b/tools/test/topos/default.recipe
@@ -11,4 +11,16 @@
 export OPS=h1
 export OPD=h4
 export OPL1="s4 s7"
-export OPL2="s4 s5"
\ No newline at end of file
+export OPL2="s4 s5"
+
+# Variables for device port up down up scenario.
+export OPSS1="of:0000000000000004"
+export OPSP1="3"
+export OPDS1="of:0000000000000007"
+export OPDP1="3"
+export OPSS2="of:0000000000000005"
+export OPSP2="2"
+export OPDS2="of:0000000000000004"
+export OPDP2="2"
+
+