diff --git a/protos/openolt.proto b/protos/openolt.proto
index 2ee2346..4178f38 100644
--- a/protos/openolt.proto
+++ b/protos/openolt.proto
@@ -115,7 +115,14 @@
             body: "*"
         };
     }
-    
+
+    rpc GetDeviceInfo(Empty) returns (DeviceInfo) {
+        option (google.api.http) = {
+            post: "/v1/GetDeviceInfo"
+            body: "*"
+        };
+    }
+
     rpc Reboot(Empty) returns (Empty) {
          option (google.api.http) = {
             post: "/v1/Reboot"
@@ -232,6 +239,21 @@
     bytes pkt = 2;
 }
 
+message DeviceInfo {
+    string vendor = 1;
+    string model = 2;
+    string hardware_version = 3;
+    string firmware_version = 4;
+    string technology = 5;
+    fixed32 onu_id_start = 6;
+    fixed32 onu_id_end = 7;
+    fixed32 alloc_id_start = 8;
+    fixed32 alloc_id_end = 9;
+    fixed32 gemport_id_start = 10;
+    fixed32 gemport_id_end = 11;
+    fixed32 pon_ports = 12;
+}
+
 message Classifier {
     fixed32 o_tpid = 1;
     fixed32 o_vid = 2;