diff --git a/xCAT-server/lib/xcat/plugins/nodediscover.pm b/xCAT-server/lib/xcat/plugins/nodediscover.pm
index a6bb3b44a..bd828f8c8 100644
--- a/xCAT-server/lib/xcat/plugins/nodediscover.pm
+++ b/xCAT-server/lib/xcat/plugins/nodediscover.pm
@@ -324,6 +324,12 @@ sub process_request {
             }
         }
     }
+
+    # make sure the node has the correct ip configured
+    unless ($clientip) {
+        $callback->({error=> ["The node [$node] should have a correct IP address which belongs to the management network."], errorcode=>["1"]});
+        return;
+    }
     
     my $restartstring = "restart";
     if (scalar @forcenics > 0) {
diff --git a/xCAT-server/lib/xcat/plugins/seqdiscovery.pm b/xCAT-server/lib/xcat/plugins/seqdiscovery.pm
index 7c9c652ba..ab1d6e05f 100644
--- a/xCAT-server/lib/xcat/plugins/seqdiscovery.pm
+++ b/xCAT-server/lib/xcat/plugins/seqdiscovery.pm
@@ -1060,8 +1060,12 @@ Usage:
         $request->{node} = [$node];
         $request->{discoverymethod} = ['manual'];
         $request->{updateswitch} = ['yes'];
-        $subreq->($request);
-        xCAT::MsgUtils->message("I", {data=>["Defined [$uuid] to node $node."]}, $callback);
+        my $rsp = $subreq->($request);
+        if (defined ($rsp->{errorcode}->[0])) {
+            xCAT::MsgUtils->message("E", $rsp, $callback);
+        } else {
+            xCAT::MsgUtils->message("I", {data=>["Defined [$uuid] to node $node."]}, $callback);
+        }
     } else {
         $usage->($callback);
         return;