diff --git a/views/ngXosViews/diagnostic/src/css/serviceTopology.css b/views/ngXosViews/diagnostic/src/css/serviceTopology.css
index ebd17e5..4b88ccb 100644
--- a/views/ngXosViews/diagnostic/src/css/serviceTopology.css
+++ b/views/ngXosViews/diagnostic/src/css/serviceTopology.css
@@ -246,6 +246,12 @@
   }
 }
 
+/* MODALS */
+
+.modal.fade.in {
+  display: block;
+}
+
 /* ANIMATIONS */
 
 @keyframes bounceInRight {
diff --git a/views/ngXosViews/diagnostic/src/index.html b/views/ngXosViews/diagnostic/src/index.html
index c3f0623..eacbfe1 100644
--- a/views/ngXosViews/diagnostic/src/index.html
+++ b/views/ngXosViews/diagnostic/src/index.html
@@ -33,6 +33,7 @@
 <script src="/api/ng-xos.js"></script>
 <script src="/api/ng-hpcapi.js"></script>
 <script src="/.tmp/main.js"></script>
+<script src="/.tmp/subscriber-modal.js"></script>
 <script src="/.tmp/serviceTopologyHelper.js"></script>
 <script src="/.tmp/serviceTopology.js"></script>
 <script src="/.tmp/rest_services.js"></script>
diff --git a/views/ngXosViews/diagnostic/src/js/diagnostic.js b/views/ngXosViews/diagnostic/src/js/diagnostic.js
index 63ab420..c9787ba 100644
--- a/views/ngXosViews/diagnostic/src/js/diagnostic.js
+++ b/views/ngXosViews/diagnostic/src/js/diagnostic.js
@@ -7,7 +7,7 @@
       restrict: 'E',
       templateUrl: 'templates/diagnostic.tpl.html',
       controllerAs: 'vm',
-      controller: function(Subscribers, ServiceRelation){
+      controller: function(Subscribers, ServiceRelation, $rootScope){
         this.loader = true;
         this.error = false;
         Subscribers.query().$promise
@@ -25,6 +25,13 @@
         .finally(() => {
           this.loader = false;
         });
+
+        $rootScope.$on('subscriber.selected', (evt, subscriber) => {
+          ServiceRelation.getBySubscriber(subscriber)
+          .then((serviceChain) => {
+            this.serviceChain = serviceChain;
+          });
+        });
       }
     }
   });
diff --git a/views/ngXosViews/diagnostic/src/js/logicTopology.js b/views/ngXosViews/diagnostic/src/js/logicTopology.js
index da2fef6..a3501dd 100644
--- a/views/ngXosViews/diagnostic/src/js/logicTopology.js
+++ b/views/ngXosViews/diagnostic/src/js/logicTopology.js
@@ -92,6 +92,17 @@
         handleSvg($element[0]);
         LogicTopologyHelper.setupTree(svg);
 
+        this.openSubscriberModal = () => {
+          this.subscriberModal = true;
+          $scope.$apply();
+        };
+
+
+        // listen for subscriber modal event
+        $rootScope.$on('subscriber.modal.open', () => {
+          this.openSubscriberModal();
+        });
+
       }
     };
   });
diff --git a/views/ngXosViews/diagnostic/src/js/logicTopologyHelper.js b/views/ngXosViews/diagnostic/src/js/logicTopologyHelper.js
index 3be26c5..f860d9e 100644
--- a/views/ngXosViews/diagnostic/src/js/logicTopologyHelper.js
+++ b/views/ngXosViews/diagnostic/src/js/logicTopologyHelper.js
@@ -2,7 +2,7 @@
   'use strict';
 
   angular.module('xos.serviceTopology')
-  .service('LogicTopologyHelper', function($window, $log, lodash, serviceTopologyConfig, NodeDrawer){
+  .service('LogicTopologyHelper', function($window, $log, $rootScope, lodash, serviceTopologyConfig, NodeDrawer){
 
     var diagonal, nodes, links, i = 0, svgWidth, svgHeight, layout;
 
@@ -118,6 +118,12 @@
       NodeDrawer.addPhisical(node.filter('.subscriber'));
       NodeDrawer.addDevice(node.filter('.device'));
 
+      // add event listener to subscriber
+      node.filter('.subscriber')
+      .on('click', () => {
+        $rootScope.$emit('subscriber.modal.open');
+      });
+
       //update nodes
       // TODO if data change, only update them
       // NodeDrawer.updateRack(node.filter('.rack'));
diff --git a/views/ngXosViews/diagnostic/src/js/subscriber-modal.js b/views/ngXosViews/diagnostic/src/js/subscriber-modal.js
new file mode 100644
index 0000000..f805c1a
--- /dev/null
+++ b/views/ngXosViews/diagnostic/src/js/subscriber-modal.js
@@ -0,0 +1,27 @@
+(function () {
+  'use strict';
+  angular.module('xos.serviceTopology')
+  .directive('subscriberModal', function(){
+    return {
+      scope: {
+        subscribers: '=',
+        open: '='
+      },
+      bindToController: true,
+      restrict: 'E',
+      templateUrl: 'templates/subscriber-modal.tpl.html',
+      controllerAs: 'vm',
+      controller: function($rootScope){
+
+        this.close = () => {
+          this.open = false;
+        };
+
+        this.select = (subscriber) => {
+          $rootScope.$emit('subscriber.selected', subscriber);
+          this.close();
+        };
+      }
+    };
+  });
+})();
diff --git a/views/ngXosViews/diagnostic/src/templates/logicTopology.tpl.html b/views/ngXosViews/diagnostic/src/templates/logicTopology.tpl.html
index 9bd0551..0cff927 100644
--- a/views/ngXosViews/diagnostic/src/templates/logicTopology.tpl.html
+++ b/views/ngXosViews/diagnostic/src/templates/logicTopology.tpl.html
@@ -1,3 +1,4 @@
+<subscriber-modal open="vm.subscriberModal" subscribers="vm.subscribers"></subscriber-modal>
 <div class="instances-stats animate" ng-hide="vm.hideInstanceStats">
   <div class="row">
     <div class="col-sm-3 col-sm-offset-8">
diff --git a/views/ngXosViews/diagnostic/src/templates/subscriber-modal.tpl.html b/views/ngXosViews/diagnostic/src/templates/subscriber-modal.tpl.html
new file mode 100644
index 0000000..9c005a3
--- /dev/null
+++ b/views/ngXosViews/diagnostic/src/templates/subscriber-modal.tpl.html
@@ -0,0 +1,17 @@
+<div class="modal fade" ng-class="{in: vm.open}" tabindex="-1" role="dialog">
+  <div class="modal-dialog">
+    <div class="modal-content">
+      <div class="modal-header">
+        <button ng-click="vm.close()"  type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
+        <h4 class="modal-title">Select a subscriber:</h4>
+      </div>
+      <div class="modal-body">
+        <select class="form-control" ng-options="s as s.humanReadableName for s in vm.subscribers" ng-model="vm.selected"></select>
+      </div>
+      <div class="modal-footer">
+        <button ng-click="vm.close()" type="button" class="btn btn-default" data-dismiss="modal">Close</button>
+        <button ng-click="vm.select(vm.selected)" type="button" class="btn btn-primary">Select</button>
+      </div>
+    </div><!-- /.modal-content -->
+  </div><!-- /.modal-dialog -->
+</div><!-- /.modal -->
\ No newline at end of file