diff --git a/apps/t3/src/main/java/org/onosproject/t3/api/TroubleshootService.java b/apps/t3/src/main/java/org/onosproject/t3/api/TroubleshootService.java
index 01bae57..028df64 100644
--- a/apps/t3/src/main/java/org/onosproject/t3/api/TroubleshootService.java
+++ b/apps/t3/src/main/java/org/onosproject/t3/api/TroubleshootService.java
@@ -21,6 +21,8 @@
 import org.onosproject.net.HostId;
 import org.onosproject.net.flow.TrafficSelector;
 
+import java.util.List;
+
 /**
  * API for troubleshooting services, providing static analysis of installed
  * flows and groups.
@@ -28,6 +30,14 @@
 public interface TroubleshootService {
 
     /**
+     * Requests a static trace be performed between all hosts in the network, given a type of traffic.
+     *
+     * @param type the etherType of the traffic we want to trace.
+     * @return a trace result
+     */
+    List<StaticPacketTrace> pingAll(EthType.EtherType type);
+
+    /**
      * Requests a static trace be performed between the two hosts in the network, given a type of traffic.
      *
      * @param sourceHost      source host