diff --git a/.gitmodules b/.gitmodules
index 3d2a8e3f7a1d..931b9e08c4e1 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -65,4 +65,4 @@
 	url = https://github.com/p/redis-dump-load.git
 [submodule "platform/mellanox/mlnx-sai/SAI-Implementation"]
 	path = platform/mellanox/mlnx-sai/SAI-Implementation
-	url = https://github.com/Mellanox/SAI-Implementation
+	url = file:////auto/mswg/git/switchx/sai_interface.git
diff --git a/platform/mellanox/fw.mk b/platform/mellanox/fw.mk
index 72a92c1dc57e..8d643f0ebd9e 100644
--- a/platform/mellanox/fw.mk
+++ b/platform/mellanox/fw.mk
@@ -1,13 +1,13 @@
 # mellanox firmware
 
-MLNX_FW_BASE_URL = $(MLNX_SDK_BASE_URL)
+MLNX_FW_BASE_URL = http://arc-build-server/fw/
 
-MLNX_SPC_FW_VERSION = 13.2000.1886
+MLNX_SPC_FW_VERSION = 13.2000.2104
 MLNX_SPC_FW_FILE = fw-SPC-rel-$(subst .,_,$(MLNX_SPC_FW_VERSION))-EVB.mfa
 $(MLNX_SPC_FW_FILE)_URL = $(MLNX_FW_BASE_URL)/$(MLNX_SPC_FW_FILE)
 SONIC_ONLINE_FILES += $(MLNX_SPC_FW_FILE)
 
-MLNX_SPC2_FW_VERSION = 29.2000.1886
+MLNX_SPC2_FW_VERSION = 29.2000.2104
 MLNX_SPC2_FW_FILE = fw-SPC2-rel-$(subst .,_,$(MLNX_SPC2_FW_VERSION))-EVB.mfa
 $(MLNX_SPC2_FW_FILE)_URL = $(MLNX_FW_BASE_URL)/$(MLNX_SPC2_FW_FILE)
 SONIC_ONLINE_FILES += $(MLNX_SPC2_FW_FILE)
diff --git a/platform/mellanox/mlnx-sai.mk b/platform/mellanox/mlnx-sai.mk
index fd023ab9c2ed..25ac0a94b0e3 100644
--- a/platform/mellanox/mlnx-sai.mk
+++ b/platform/mellanox/mlnx-sai.mk
@@ -1,6 +1,6 @@
 # Mellanox SAI
 
-MLNX_SAI_VERSION = SAIRel1.14.2-master
+MLNX_SAI_VERSION = SAIRel1.14.3-master
 
 export MLNX_SAI_VERSION
 
diff --git a/platform/mellanox/mlnx-sai/SAI-Implementation b/platform/mellanox/mlnx-sai/SAI-Implementation
index d446176da71b..76ced9d4a147 160000
--- a/platform/mellanox/mlnx-sai/SAI-Implementation
+++ b/platform/mellanox/mlnx-sai/SAI-Implementation
@@ -1 +1 @@
-Subproject commit d446176da71b42bd0d9c5421cae24c6b255c7a5c
+Subproject commit 76ced9d4a147163098054a717ecce56d58478b35
diff --git a/platform/mellanox/sdk-src/sx-acl-helper/Makefile b/platform/mellanox/sdk-src/sx-acl-helper/Makefile
new file mode 100644
index 000000000000..d9d0aef8775b
--- /dev/null
+++ b/platform/mellanox/sdk-src/sx-acl-helper/Makefile
@@ -0,0 +1,29 @@
+.ONESHELL:
+SHELL = /bin/bash
+
+MAIN_TARGET = sx-acl-helper_1.mlnx.$(MLNX_SDK_DEB_VERSION)_amd64.deb
+DERIVED_TARGETS = sx-acl-helper-dev_1.mlnx.$(MLNX_SDK_DEB_VERSION)_amd64.deb \
+				  sx-acl-helper-dev-static_1.mlnx.$(MLNX_SDK_DEB_VERSION)_amd64.deb \
+				  sx-acl-helper-dbgsym_1.mlnx.$(MLNX_SDK_DEB_VERSION)_amd64.deb
+PACKAGE_NAME = sx_acl_helper
+
+$(addprefix $(DEST)/, $(MAIN_TARGET)): $(DEST)/% :
+	# get sources
+	rm -rf $(PACKAGE_NAME)-$(MLNX_SDK_VERSION)-$(MLNX_SDK_ISSU_VERSION)
+
+	wget -c $(MLNX_SDK_SOURCE_BASE_URL)/$(PACKAGE_NAME)-$(MLNX_SDK_VERSION)-$(MLNX_SDK_ISSU_VERSION).tar.gz -O - | tar -xz
+
+	# build
+	pushd $(PACKAGE_NAME)-$(MLNX_SDK_VERSION)-$(MLNX_SDK_ISSU_VERSION)
+
+	if [ -f autogen.sh ]; then
+		./autogen.sh
+	fi
+
+	debuild -b -us -uc -j$(SONIC_CONFIG_MAKE_JOBS)
+
+	popd
+
+	mv $(DERIVED_TARGETS) $* $(DEST)/
+
+$(addprefix $(DEST)/, $(DERIVED_TARGETS)): $(DEST)/% : $(DEST)/$(MAIN_TARGET)
diff --git a/platform/mellanox/sdk.mk b/platform/mellanox/sdk.mk
index ae49cb619228..b42f864e7607 100644
--- a/platform/mellanox/sdk.mk
+++ b/platform/mellanox/sdk.mk
@@ -1,11 +1,11 @@
 MLNX_SDK_BASE_URL = https://github.com/Mellanox/SAI-Implementation/raw/acf8ed31fd43e8280b553357c4ac4248f2c2e3aa/sdk
-MLNX_SDK_VERSION = 4.3.1886
+MLNX_SDK_VERSION = 4.3.2104
 MLNX_SDK_ISSU_VERSION = 101
 
 MLNX_SDK_DEB_VERSION = $(subst _,.,$(MLNX_SDK_VERSION))
 
 # Place here URL where SDK sources exist
-MLNX_SDK_SOURCE_BASE_URL =
+MLNX_SDK_SOURCE_BASE_URL = http://arc-build-server/sdk/sx_sdk_eth-$(MLNX_SDK_VERSION)/SOURCES/
 
 ifneq ($(MLNX_SDK_SOURCE_BASE_URL), )
 SDK_FROM_SRC = y
@@ -15,17 +15,18 @@ endif
 
 export MLNX_SDK_SOURCE_BASE_URL MLNX_SDK_VERSION MLNX_SDK_ISSU_VERSION MLNX_SDK_DEB_VERSION
 
-MLNX_SDK_RDEBS += $(APPLIBS) $(IPROUTE2_MLNX) $(SX_COMPLIB) \
-		  $(SX_EXAMPLES) $(SX_GEN_UTILS) $(SX_SCEW) $(SXD_LIBS) $(WJH_LIBS)
+MLNX_SDK_RDEBS += $(APPLIBS) $(IPROUTE2_MLNX) $(SX_COMPLIB) $(SX_EXAMPLES) \
+                  $(SX_GEN_UTILS) $(SX_SCEW) $(SXD_LIBS) $(WJH_LIBS) $(SX_ACL_HELPER)
 
-MLNX_SDK_DEBS += $(APPLIBS_DEV) $(IPROUTE2_MLNX_DEV) \
-		 $(SX_COMPLIB_DEV) $(SX_COMPLIB_DEV_STATIC) $(SX_EXAMPLES_DEV) \
-		 $(SX_GEN_UTILS_DEV) $(SX_SCEW_DEV) $(SX_SCEW_DEV_STATIC) \
-		 $(SXD_LIBS_DEV) $(SXD_LIBS_DEV_STATIC) $(WJH_LIBS_DEV)
+
+MLNX_SDK_DEBS += $(APPLIBS_DEV) $(IPROUTE2_MLNX_DEV) $(SX_COMPLIB_DEV) \
+                 $(SX_COMPLIB_DEV_STATIC) $(SX_EXAMPLES_DEV) $(SX_GEN_UTILS_DEV) \
+                 $(SX_SCEW_DEV) $(SX_SCEW_DEV_STATIC) $(SXD_LIBS_DEV)\
+                 $(SXD_LIBS_DEV_STATIC) $(WJH_LIBS_DEV) $(SX_ACL_HELPER_DEV)
 
 MLNX_SDK_DBG_DEBS += $(APPLIBS_DBGSYM) $(IPROUTE2_MLNX_DBGSYM) $(SX_COMPLIB_DBGSYM) \
          $(SX_EXAMPLES_DBGSYM) $(SX_GEN_UTILS_DBGSYM) $(SX_SCEW_DBGSYM) \
-         $(SXD_LIBS_DBGSYM) $(WJH_LIBS_DBGSYM)
+         $(SXD_LIBS_DBGSYM) $(WJH_LIBS_DBGSYM) $(SX_ACL_HELPER_DBGSYM)
 
 APPLIBS = applibs_1.mlnx.$(MLNX_SDK_DEB_VERSION)_amd64.deb
 $(APPLIBS)_SRC_PATH = $(PLATFORM_PATH)/sdk-src/applibs
@@ -69,7 +70,7 @@ endif
 
 SX_GEN_UTILS = sx-gen-utils_1.mlnx.$(MLNX_SDK_DEB_VERSION)_amd64.deb
 $(SX_GEN_UTILS)_SRC_PATH += $(PLATFORM_PATH)/sdk-src/sx-gen-utils
-$(SX_GEN_UTILS)_DEPENDS += $(SX_COMPLIB_DEV) $(SXD_LIBS_DEV)
+$(SX_GEN_UTILS)_DEPENDS += $(SX_COMPLIB_DEV) # $(SXD_LIBS_DEV)
 $(SX_GEN_UTILS)_RDEPENDS += $(SX_COMPLIB)
 SX_GEN_UTILS_DEV = sx-gen-utils-dev_1.mlnx.$(MLNX_SDK_DEB_VERSION)_amd64.deb
 $(eval $(call add_derived_package,$(SX_GEN_UTILS),$(SX_GEN_UTILS_DEV)))
@@ -89,7 +90,7 @@ endif
 
 SXD_LIBS = sxd-libs_1.mlnx.$(MLNX_SDK_DEB_VERSION)_amd64.deb
 $(SXD_LIBS)_SRC_PATH = $(PLATFORM_PATH)/sdk-src/sxd-libs
-$(SXD_LIBS)_DEPENDS += $(SX_COMPLIB_DEV)
+$(SXD_LIBS)_DEPENDS += $(SX_COMPLIB_DEV) $(SX_GEN_UTILS_DEV)
 SXD_LIBS_DEV = sxd-libs-dev_1.mlnx.$(MLNX_SDK_DEB_VERSION)_amd64.deb
 $(eval $(call add_derived_package,$(SXD_LIBS),$(SXD_LIBS_DEV)))
 SXD_LIBS_DBGSYM = sxd-libs-dbgsym_1.mlnx.$(MLNX_SDK_DEB_VERSION)_amd64.deb
@@ -107,10 +108,21 @@ ifeq ($(SDK_FROM_SRC),y)
 $(eval $(call add_derived_package,$(PYTHON_SDK_API),$(PYTHON_SDK_API_DBGSYM)))
 endif
 
+SX_ACL_HELPER = sx-acl-helper_1.mlnx.$(MLNX_SDK_DEB_VERSION)_amd64.deb
+$(SX_ACL_HELPER)_SRC_PATH = $(PLATFORM_PATH)/sdk-src/sx-acl-helper
+$(SX_ACL_HELPER)_DEPENDS += $(SX_COMPLIB_DEV) $(SXD_LIBS_DEV) $(APPLIBS_DEV)
+$(SX_ACL_HELPER)_RDEPENDS += $(SX_COMPLIB) $(PYTHON_SDK_API)
+SX_ACL_HELPER_DEV = sx-acl-helper-dev_1.mlnx.$(MLNX_SDK_DEB_VERSION)_amd64.deb
+$(eval $(call add_derived_package,$(SX_ACL_HELPER),$(SX_ACL_HELPER_DEV)))
+WJH_LIBS_DBGSYM = sx-acl-helper-dbgsym_1.mlnx.$(MLNX_SDK_DEB_VERSION)_amd64.deb
+ifeq ($(SDK_FROM_SRC),y)
+$(eval $(call add_derived_package,$(SX_ACL_HELPER),$(SX_ACL_HELPER_DBGSYM)))
+endif
+
 WJH_LIBS = wjh-libs_1.mlnx.$(MLNX_SDK_DEB_VERSION)_amd64.deb
 $(WJH_LIBS)_SRC_PATH = $(PLATFORM_PATH)/sdk-src/wjh-libs
-$(WJH_LIBS)_DEPENDS += $(SX_COMPLIB_DEV) $(SXD_LIBS_DEV) $(APPLIBS_DEV)
-$(WJH_LIBS)_RDEPENDS += $(SX_COMPLIB) $(PYTHON_SDK_API)
+$(WJH_LIBS)_DEPENDS += $(SX_COMPLIB_DEV) $(SXD_LIBS_DEV) $(APPLIBS_DEV) $(SX_ACL_HELPER_DEV) $(SX_SCEW_DEV)
+$(WJH_LIBS)_RDEPENDS += $(SX_COMPLIB) $(PYTHON_SDK_API) $(SX_ACL_HELPER)
 WJH_LIBS_DEV = wjh-libs-dev_1.mlnx.$(MLNX_SDK_DEB_VERSION)_amd64.deb
 $(eval $(call add_derived_package,$(WJH_LIBS),$(WJH_LIBS_DEV)))
 WJH_LIBS_DBGSYM = wjh-libs-dbgsym_1.mlnx.$(MLNX_SDK_DEB_VERSION)_amd64.deb
diff --git a/src/sonic-linux-kernel b/src/sonic-linux-kernel
index f8bbe29ff896..6d55e9a84c6d 160000
--- a/src/sonic-linux-kernel
+++ b/src/sonic-linux-kernel
@@ -1 +1 @@
-Subproject commit f8bbe29ff89611d190658118e2c191943dabe3e0
+Subproject commit 6d55e9a84c6d0693fa5532bea2d2ddfa5c501eb6
diff --git a/src/sonic-platform-common b/src/sonic-platform-common
index 0caf265f1bf3..33b037d38f1c 160000
--- a/src/sonic-platform-common
+++ b/src/sonic-platform-common
@@ -1 +1 @@
-Subproject commit 0caf265f1bf3d8d68a9a4a3abe20f6d89ca09231
+Subproject commit 33b037d38f1c96264729b966e777efed143ed01d
diff --git a/src/sonic-sairedis b/src/sonic-sairedis
index 6bc64eedf16e..5fc89b569c98 160000
--- a/src/sonic-sairedis
+++ b/src/sonic-sairedis
@@ -1 +1 @@
-Subproject commit 6bc64eedf16e0dd377374e3c81ff179f996d459d
+Subproject commit 5fc89b569c98ca1be51f0069c59465abd5873b19
diff --git a/src/sonic-utilities b/src/sonic-utilities
index a6a44e82402b..c1c53f5d4740 160000
--- a/src/sonic-utilities
+++ b/src/sonic-utilities
@@ -1 +1 @@
-Subproject commit a6a44e82402bdcc48423ac93e137673e59e50c78
+Subproject commit c1c53f5d47401c4486b3fd4a32f6bf45c0926ae2