diff --git a/protos/openolt.proto b/protos/openolt.proto
index 3e72181..d5a83f2 100644
--- a/protos/openolt.proto
+++ b/protos/openolt.proto
@@ -75,6 +75,14 @@
         PacketIndication pkt_ind = 7;
         PortStatistics port_stats = 8;
         FlowStatistics flow_stats = 9;
+        AlarmIndication alarm_ind= 10;
+    }
+}
+
+message AlarmIndication {
+    oneof data {
+        LosIndication los_ind = 1;
+        DyingGaspIndication dying_gasp_ind = 2;
     }
 }
 
@@ -224,4 +232,15 @@
     fixed32 timestamp = 16;
 }
 
+message LosIndication {
+    fixed32 intf_id = 1;
+    string status = 2;
+}
+
+message DyingGaspIndication {
+    fixed32 intf_id = 1;
+    fixed32 onu_id = 2;
+    string status = 3;
+}
+
 message Empty {}