diff --git a/openolt.proto b/openolt.proto
index 60bab72..ddc8f74 100644
--- a/openolt.proto
+++ b/openolt.proto
@@ -130,6 +130,20 @@
         };
     }
 
+    rpc CreateTconts(Tconts) returns (Empty) {
+        option (google.api.http) = {
+            post: "/v1/CreateTconts"
+            body: "*"
+        };
+    }
+
+    rpc RemoveTconts(Tconts) returns (Empty) {
+        option (google.api.http) = {
+            post: "/v1/RemoveTconts"
+            body: "*"
+        };
+    }
+
     rpc EnableIndication(Empty) returns (stream Indication) {}
 }
 
@@ -203,6 +217,8 @@
     fixed32 intf_id = 1;
     fixed32 gemport_id = 2;
     fixed32 flow_id = 3;
+    fixed32 port_no = 6;
+    fixed64 cookie = 7;
     bytes pkt = 4;
 }
 
@@ -219,7 +235,6 @@
     fixed32 onu_id = 2;
     SerialNumber serial_number = 3;
     fixed32 pir = 4;   // peak information rate assigned to onu
-    fixed32 alloc_id = 5;
 }
 
 message OmciMsg {
@@ -231,6 +246,7 @@
 message OnuPacket {
     fixed32 intf_id = 1;
     fixed32 onu_id = 2;
+    fixed32 port_no = 4;
     bytes pkt = 3;
 }
 
@@ -244,6 +260,8 @@
     string model = 2;
     string hardware_version = 3;
     string firmware_version = 4;
+    string device_id = 16;
+    string device_serial_number = 17;
 
     // Total number of pon intf ports on the device
     fixed32 pon_ports = 12;
@@ -278,7 +296,7 @@
 
             enum SharingType {
                 DEDICATED_PER_INTF = 0;
-                SHARED_BY_ALL_INTF_ALL_TECH = 1; // Shared across all interfaces in all technologiesi in all ranges
+                SHARED_BY_ALL_INTF_ALL_TECH = 1; // Shared across all interfaces in all technologies in all ranges
                 SHARED_BY_ALL_INTF_SAME_TECH = 2; // Shared across all interfaces of the same technology used in this range
             }
 
@@ -329,6 +347,7 @@
 message Flow {
     sfixed32 access_intf_id = 1;
     sfixed32 onu_id = 2;
+    sfixed32 uni_id = 11;
     fixed32 flow_id = 3;
     string flow_type = 4;	// upstream, downstream, broadcast, multicast
     sfixed32 alloc_id = 10;
@@ -337,6 +356,8 @@
     Classifier classifier = 7;
     Action action = 8;
     sfixed32 priority = 9;
+    fixed64 cookie = 12; // must be provided for any flow with trap_to_host action. Returned in PacketIndication
+    fixed32 port_no = 13; // must be provided for any flow with trap_to_host action. Returned in PacketIndication
 }
 
 message SerialNumber {
@@ -443,5 +464,93 @@
     fixed32 onu_id = 2;
 }
 
+enum Direction {
+    UPSTREAM = 0;
+    DOWNSTREAM = 1;
+    BIDIRECTIONAL = 2;
+}
+
+enum SchedulingPolicy {
+    WRR = 0;
+    StrictPriority = 1;
+    Hybrid = 2;
+}
+
+enum AdditionalBW {
+    AdditionalBW_None = 0;
+    AdditionalBW_NA = 1;
+    AdditionalBW_BestEffort = 2;
+    AdditionalBW_Auto = 3;
+}
+
+enum DiscardPolicy {
+    TailDrop = 0;
+    WTailDrop = 1;
+    Red = 2;
+    WRed = 3;
+}
+
+enum InferredAdditionBWIndication {
+    InferredAdditionBWIndication_None = 0;
+    InferredAdditionBWIndication_Assured = 1;
+    InferredAdditionBWIndication_BestEffort = 2;
+}
+
+message Scheduler {
+    Direction direction = 1;
+    AdditionalBW additional_bw = 2; // Valid on for “direction == Upstream”.
+    fixed32 priority = 3;
+    fixed32 weight = 4;
+    SchedulingPolicy sched_policy = 5;
+}
+
+message TrafficShapingInfo {
+    fixed32 cir = 1;
+    fixed32 cbs = 2;
+    fixed32 pir = 3;
+    fixed32 pbs = 4;
+    fixed32 gir = 5; // only if “direction == Upstream ”
+    InferredAdditionBWIndication add_bw_ind = 6; // only if “direction == Upstream”
+}
+
+message Tcont {
+    Direction direction = 1;
+    fixed32 alloc_id = 2; // valid only if “direction == Upstream ”
+    Scheduler scheduler = 3;
+    TrafficShapingInfo traffic_shaping_info = 4;
+}
+
+message Tconts {
+    fixed32 intf_id = 1;
+    fixed32 onu_id = 2;
+    fixed32 uni_id = 4;
+    fixed32 port_no = 5;
+    repeated Tcont tconts = 3;
+}
+
+message TailDropDiscardConfig {
+    fixed32 queue_size = 1;
+}
+
+message RedDiscardConfig {
+    fixed32 min_threshold = 1;
+    fixed32 max_threshold = 2;
+    fixed32 max_probability = 3;
+}
+
+message WRedDiscardConfig {
+    RedDiscardConfig green = 1;
+    RedDiscardConfig yellow = 2;
+    RedDiscardConfig red = 3;
+}
+
+message DiscardConfig {
+    DiscardPolicy discard_policy = 1;
+    oneof discard_config {
+        TailDropDiscardConfig tail_drop_discard_config = 2;
+        RedDiscardConfig red_discard_config = 3;
+        WRedDiscardConfig wred_discard_config = 4;
+    }
+}
 
 message Empty {}