diff --git a/protos/voltha_protos/openolt.proto b/protos/voltha_protos/openolt.proto
index ad0faa3..8f22e35 100644
--- a/protos/voltha_protos/openolt.proto
+++ b/protos/voltha_protos/openolt.proto
@@ -481,7 +481,7 @@
 
     bool replicate_flow = 16; // When this field is true, use pbitToGemPortID to know which p-bit needs to be classfied to which gem port.
     map<fixed32, fixed32> pbit_to_gemport = 17; // Map of p-bit to gem port ID
-
+    map<fixed32, bool> gemport_to_aes = 19; // Map of gem port ID to aes encryption
 }
 
 message SerialNumber {