diff --git a/inc/sai.h b/inc/sai.h
index f33293364..ba664e696 100644
--- a/inc/sai.h
+++ b/inc/sai.h
@@ -78,6 +78,7 @@
 #include "saimymac.h"
 #include "saigenericprogrammable.h"
 #include "saitwamp.h"
+#include "sail2ecmpgroup.h"
 #include "saiversion.h"
 #include "saipoe.h"
 
@@ -148,6 +149,7 @@ typedef enum _sai_api_t
     SAI_API_ARS_PROFILE      = 49, /**<sai_ars_api_profile_t */
     SAI_API_TWAMP            = 50, /**< sai_twamp_api_t */
     SAI_API_POE              = 51, /**< sai_poe_api_t */
+    SAI_API_L2_ECMP_GROUP    = 52, /**< sai_l2_ecmp_group_api_t */
     SAI_API_MAX,                   /**< total number of APIs */
 
     /** Custom range base value */
diff --git a/inc/saibridge.h b/inc/saibridge.h
index 72d0db851..b90990341 100644
--- a/inc/saibridge.h
+++ b/inc/saibridge.h
@@ -85,6 +85,9 @@ typedef enum _sai_bridge_port_type_t
     /** Bridge tunnel port */
     SAI_BRIDGE_PORT_TYPE_TUNNEL,
 
+    /** Bridge L2 ECMP Group */
+    SAI_BRIDGE_PORT_TYPE_L2_ECMP_GROUP,
+
 } sai_bridge_port_type_t;
 
 /**
@@ -181,7 +184,7 @@ typedef enum _sai_bridge_port_attr_t
      * @type sai_object_id_t
      * @flags MANDATORY_ON_CREATE | CREATE_AND_SET
      * @objects SAI_OBJECT_TYPE_BRIDGE
-     * @condition SAI_BRIDGE_PORT_ATTR_TYPE == SAI_BRIDGE_PORT_TYPE_SUB_PORT or SAI_BRIDGE_PORT_ATTR_TYPE == SAI_BRIDGE_PORT_TYPE_1D_ROUTER or SAI_BRIDGE_PORT_ATTR_TYPE == SAI_BRIDGE_PORT_TYPE_TUNNEL
+     * @condition SAI_BRIDGE_PORT_ATTR_TYPE == SAI_BRIDGE_PORT_TYPE_SUB_PORT or SAI_BRIDGE_PORT_ATTR_TYPE == SAI_BRIDGE_PORT_TYPE_1D_ROUTER or SAI_BRIDGE_PORT_ATTR_TYPE == SAI_BRIDGE_PORT_TYPE_TUNNEL or SAI_BRIDGE_PORT_ATTR_TYPE == SAI_BRIDGE_PORT_TYPE_L2_ECMP_GROUP
      */
     SAI_BRIDGE_PORT_ATTR_BRIDGE_ID,
 
@@ -259,6 +262,27 @@ typedef enum _sai_bridge_port_attr_t
      */
     SAI_BRIDGE_PORT_ATTR_ISOLATION_GROUP,
 
+    /**
+     * @brief Indication if this bridge port is Not a Designated Forwarder
+     * When set, egress BUM traffic on this bridge port will be dropped.
+     *
+     * @type bool
+     * @flags CREATE_AND_SET
+     * @default false
+     * @validonly SAI_BRIDGE_PORT_ATTR_TYPE == SAI_BRIDGE_PORT_TYPE_PORT
+     */
+    SAI_BRIDGE_PORT_ATTR_NON_DF,
+
+    /**
+     * @brief Associated L2 ECMP Group
+     *
+     * @type sai_object_id_t
+     * @flags MANDATORY_ON_CREATE | CREATE_ONLY
+     * @objects SAI_OBJECT_TYPE_L2_ECMP_GROUP
+     * @condition SAI_BRIDGE_PORT_ATTR_TYPE == SAI_BRIDGE_PORT_TYPE_L2_ECMP_GROUP
+     */
+    SAI_BRIDGE_PORT_ATTR_L2_ECMP_GROUP_ID,
+
     /**
      * @brief End of attributes
      */
diff --git a/inc/sail2ecmpgroup.h b/inc/sail2ecmpgroup.h
new file mode 100644
index 000000000..afc634311
--- /dev/null
+++ b/inc/sail2ecmpgroup.h
@@ -0,0 +1,246 @@
+/**
+ * Copyright (c) 20XX Microsoft Open Technologies, Inc.
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *    not use this file except in compliance with the License. You may obtain
+ *    a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    THIS CODE IS PROVIDED ON AN *AS IS* BASIS, WITHOUT WARRANTIES OR
+ *    CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT
+ *    LIMITATION ANY IMPLIED WARRANTIES OR CONDITIONS OF TITLE, FITNESS
+ *    FOR A PARTICULAR PURPOSE, MERCHANTABILITY OR NON-INFRINGEMENT.
+ *
+ *    See the Apache Version 2.0 License for specific language governing
+ *    permissions and limitations under the License.
+ *
+ *    Microsoft would like to thank the following companies for their review and
+ *    assistance with these files: Intel Corporation, Mellanox Technologies Ltd,
+ *    Dell Products, L.P., Facebook, Inc., Marvell International Ltd.
+ *
+ * @file    sail2ecmpgroup.h
+ *
+ * @brief   This module defines SAI L2 ECMP GROUP interface
+ */
+
+#if !defined (__SAIL2ECMPGROUP_H_)
+#define __SAIL2ECMPGROUP_H_
+
+#include <saitypes.h>
+
+/**
+ * @defgroup SAIL2ECMPGROUP SAI - L2 ECMP GROUP specific API definitions
+ *
+ * @{
+ */
+
+/**
+ * @brief Attribute id for L2 ECMP GROUP
+ */
+typedef enum _sai_l2_ecmp_group_attr_t
+{
+    /**
+     * @brief Start of attributes
+     */
+    SAI_L2_ECMP_GROUP_ATTR_START,
+
+    /**
+     * @brief Number of L2 ECMP GROUP members in the group
+     *
+     * @type sai_uint32_t
+     * @flags READ_ONLY
+     */
+    SAI_L2_ECMP_GROUP_ATTR_MEMBER_COUNT = SAI_L2_ECMP_GROUP_ATTR_START,
+
+    /**
+     * @brief L2 ECMP GROUP member list
+     *
+     * @type sai_object_list_t
+     * @flags READ_ONLY
+     * @objects SAI_OBJECT_TYPE_L2_ECMP_GROUP_MEMBER
+     */
+    SAI_L2_ECMP_GROUP_ATTR_MEMBER_LIST,
+
+    /**
+     * @brief Attach a counter
+     *
+     * When it is empty, then packet hits won't be counted
+     *
+     * @type sai_object_id_t
+     * @flags CREATE_AND_SET
+     * @objects SAI_OBJECT_TYPE_COUNTER
+     * @allownull true
+     * @default SAI_NULL_OBJECT_ID
+     */
+    SAI_L2_ECMP_GROUP_ATTR_COUNTER_ID,
+
+    /**
+     * @brief End of attributes
+     */
+    SAI_L2_ECMP_GROUP_ATTR_END,
+
+    /** Custom range base value */
+    SAI_L2_ECMP_GROUP_ATTR_CUSTOM_RANGE_START = 0x10000000,
+
+    /** End of custom range base */
+    SAI_L2_ECMP_GROUP_ATTR_CUSTOM_RANGE_END
+
+} sai_l2_ecmp_group_attr_t;
+
+typedef enum _sai_l2_ecmp_group_member_attr_t
+{
+    /**
+     * @brief Start of attributes
+     */
+    SAI_L2_ECMP_GROUP_MEMBER_ATTR_START,
+
+    /**
+     * @brief L2 ECMP GROUP id
+     *
+     * @type sai_object_id_t
+     * @flags MANDATORY_ON_CREATE | CREATE_ONLY
+     * @objects SAI_OBJECT_TYPE_L2_ECMP_GROUP
+     */
+    SAI_L2_ECMP_GROUP_MEMBER_ATTR_L2_ECMP_GROUP_ID = SAI_L2_ECMP_GROUP_MEMBER_ATTR_START,
+
+    /**
+     * @brief P2P Tunnel oid
+     *
+     * @type sai_object_id_t
+     * @flags MANDATORY_ON_CREATE | CREATE_ONLY
+     * @objects SAI_OBJECT_TYPE_TUNNEL
+     */
+    SAI_L2_ECMP_GROUP_MEMBER_ATTR_TUNNEL_ID,
+
+    /**
+     * @brief End of attributes
+     */
+    SAI_L2_ECMP_GROUP_MEMBER_ATTR_END,
+
+    /** Custom range base value */
+    SAI_L2_ECMP_GROUP_MEMBER_ATTR_CUSTOM_RANGE_START = 0x10000000,
+
+    /** End of custom range base */
+    SAI_L2_ECMP_GROUP_MEMBER_ATTR_CUSTOM_RANGE_END
+
+} sai_l2_ecmp_group_member_attr_t;
+
+/**
+ * @brief Create L2 ECMP group
+ *
+ * @param[out] l2_ecmp_group_id L2 ECMP group id
+ * @param[in] switch_id Switch id
+ * @param[in] attr_count Number of attributes
+ * @param[in] attr_list Array of attributes
+ *
+ * @return #SAI_STATUS_SUCCESS on success, failure status code on error
+ */
+typedef sai_status_t (*sai_create_l2_ecmp_group_fn)(
+        _Out_ sai_object_id_t *l2_ecmp_group_id,
+        _In_ sai_object_id_t switch_id,
+        _In_ uint32_t attr_count,
+        _In_ const sai_attribute_t *attr_list);
+
+/**
+ * @brief Remove L2 ECMP group
+ *
+ * @param[in] l2_ecmp_group_id L2 ECMP group id
+ *
+ * @return #SAI_STATUS_SUCCESS on success, failure status code on error
+ */
+typedef sai_status_t (*sai_remove_l2_ecmp_group_fn)(
+        _In_ sai_object_id_t l2_ecmp_group_id);
+
+/**
+ * @brief Set L2 ECMP Group attribute
+ *
+ * @param[in] l2_ecmp_group_id L2 ECMP group id
+ * @param[in] attr Attribute
+ *
+ * @return #SAI_STATUS_SUCCESS on success, failure status code on error
+ */
+typedef sai_status_t (*sai_set_l2_ecmp_group_attribute_fn)(
+        _In_ sai_object_id_t l2_ecmp_group_id,
+        _In_ const sai_attribute_t *attr);
+
+/**
+ * @brief Get L2 ECMP Group attribute
+ *
+ * @param[in] l2_ecmp_group_id L2 ECMP group ID
+ * @param[in] attr_count Number of attributes
+ * @param[inout] attr_list Array of attributes
+ *
+ * @return #SAI_STATUS_SUCCESS on success, failure status code on error
+ */
+typedef sai_status_t (*sai_get_l2_ecmp_group_attribute_fn)(
+        _In_ sai_object_id_t l2_ecmp_group_id,
+        _In_ uint32_t attr_count,
+        _Inout_ sai_attribute_t *attr_list);
+
+/**
+ * @brief Create L2 ECMP group member
+ *
+ * @param[out] l2_ecmp_group_member_id L2 ECMP group member id
+ * @param[in] switch_id Switch ID
+ * @param[in] attr_count Number of attributes
+ * @param[in] attr_list Array of attributes
+ *
+ * @return #SAI_STATUS_SUCCESS on success, failure status code on error
+ */
+typedef sai_status_t (*sai_create_l2_ecmp_group_member_fn)(
+        _Out_ sai_object_id_t *l2_ecmp_group_member_id,
+        _In_ sai_object_id_t switch_id,
+        _In_ uint32_t attr_count,
+        _In_ const sai_attribute_t *attr_list);
+
+/**
+ * @brief Remove L2 ECMP group member
+ *
+ * @param[in] l2_ecmp_group_member_id L2 ECMP group member ID
+ *
+ * @return #SAI_STATUS_SUCCESS on success, failure status code on error
+ */
+typedef sai_status_t (*sai_remove_l2_ecmp_group_member_fn)(
+        _In_ sai_object_id_t l2_ecmp_group_member_id);
+
+/**
+ * @brief Set L2 ECMP Group member attribute
+ *
+ * @param[in] l2_ecmp_group_member_id L2 ECMP group member ID
+ * @param[in] attr Attribute
+ *
+ * @return #SAI_STATUS_SUCCESS on success, failure status code on error
+ */
+typedef sai_status_t (*sai_set_l2_ecmp_group_member_attribute_fn)(
+        _In_ sai_object_id_t l2_ecmp_group_member_id,
+        _In_ const sai_attribute_t *attr);
+
+/**
+ * @brief Get L2 ECMP Group member attribute
+ *
+ * @param[in] l2_ecmp_group_member_id L2 ECMP group member ID
+ * @param[in] attr_count Number of attributes
+ * @param[inout] attr_list Array of attributes
+ *
+ * @return #SAI_STATUS_SUCCESS on success, failure status code on error
+ */
+typedef sai_status_t (*sai_get_l2_ecmp_group_member_attribute_fn)(
+        _In_ sai_object_id_t l2_ecmp_group_member_id,
+        _In_ uint32_t attr_count,
+        _Inout_ sai_attribute_t *attr_list);
+
+typedef struct _sai_l2_ecmp_group_api_t
+{
+    sai_create_l2_ecmp_group_fn               create_l2_ecmp_group;
+    sai_remove_l2_ecmp_group_fn               remove_l2_ecmp_group;
+    sai_set_l2_ecmp_group_attribute_fn        set_l2_ecmp_group_attribute;
+    sai_get_l2_ecmp_group_attribute_fn        get_l2_ecmp_group_attribute;
+    sai_create_l2_ecmp_group_member_fn        create_l2_ecmp_group_member;
+    sai_remove_l2_ecmp_group_member_fn        remove_l2_ecmp_group_member;
+    sai_set_l2_ecmp_group_member_attribute_fn set_l2_ecmp_group_member_attribute;
+    sai_get_l2_ecmp_group_member_attribute_fn get_l2_ecmp_group_member_attribute;
+} sai_l2_ecmp_group_api_t;
+
+/**
+ * @}
+ */
+#endif /** __SAIL2ECMPGROUP_H_ */
diff --git a/inc/saitypes.h b/inc/saitypes.h
index 3ec3c9984..e10a98c6b 100644
--- a/inc/saitypes.h
+++ b/inc/saitypes.h
@@ -298,6 +298,8 @@ typedef enum _sai_object_type_t
     SAI_OBJECT_TYPE_POE_DEVICE               = 108,
     SAI_OBJECT_TYPE_POE_PSE                  = 109,
     SAI_OBJECT_TYPE_POE_PORT                 = 110,
+    SAI_OBJECT_TYPE_L2_ECMP_GROUP            = 111,
+    SAI_OBJECT_TYPE_L2_ECMP_GROUP_MEMBER     = 112,
 
     /** Must remain in last position */
     SAI_OBJECT_TYPE_MAX,