diff --git a/tools/test/scenarios/net-pingall.xml b/tools/test/scenarios/net-pingall.xml
index 2eab5a7..863224a 100644
--- a/tools/test/scenarios/net-pingall.xml
+++ b/tools/test/scenarios/net-pingall.xml
@@ -14,14 +14,13 @@
   ~ limitations under the License.
   -->
 <scenario name="net-pingall" description="Network pingall test">
-    <!-- TODO: parametrize this via recipes -->
+    <!-- Note: This scenario is tailored using 'topo' recipe mechanism; see topos/*.recipe files -->
     <group name="Net-Pingall">
 
         <step name="Ping-All" requires="Check-Apps"
-              exec="onos-mininet sendAndExpect pingall --expect 600/600 received"/>
+              exec="onos-mininet sendAndExpect pingall --expect ${OPALL}/${OPALL} received"/>
 
         <step name="Check-Summary-For-Hosts" requires="~Ping-All"
-              exec="onos-check-summary ${OC1} [0-9]* 25 140 25"/>
-
+              exec="onos-check-summary ${OC1} [0-9]* ${OTD} ${OTL} ${OTH}"/>
     </group>
 </scenario>