diff --git a/agent/device/asfvolt16/vendor.h b/agent/device/asfvolt16/vendor.h
index ffbaec4..7cadd9b 100644
--- a/agent/device/asfvolt16/vendor.h
+++ b/agent/device/asfvolt16/vendor.h
@@ -27,17 +27,19 @@
 
 #define ONU_ID_START 1
 #define ONU_ID_END 32
-#define MAX_ONUS_PER_PON 32
+#define MAX_ONUS_PER_PON (ONU_ID_END - ONU_ID_START + 1)
 
+#define MAX_ALLOC_ID_PER_ONU 4
 #define ALLOC_ID_START 1024
-#define ALLOC_ID_END 16383
+#define ALLOC_ID_END (ALLOC_ID_START + MAX_ONUS_PER_PON * MAX_ALLOC_ID_PER_ONU)
 
+#define GEM_PORT_ID_PER_ALLOC_ID 8
 #define GEM_PORT_ID_START 1024
-#define GEM_PORT_ID_END 65535
+#define GEM_PORT_ID_END (GEM_PORT_ID_START + MAX_ONUS_PER_PON * MAX_ALLOC_ID_PER_ONU * GEM_PORT_ID_PER_ALLOC_ID)
 
 #define FLOW_ID_START 1
 #define FLOW_ID_END 65535
-#define MAX_FLOW_ID 65535
+#define MAX_FLOW_ID FLOW_ID_END
 #define INVALID_FLOW_ID 0
 
 #endif