diff --git a/device/mellanox/x86_64-mlnx_msn2700-r0/Mellanox-SN2700-D48C8/sai.profile b/device/mellanox/x86_64-mlnx_msn2700-r0/Mellanox-SN2700-D48C8/sai.profile
index bfbcb1e78f47..b1ff086c68a5 100644
--- a/device/mellanox/x86_64-mlnx_msn2700-r0/Mellanox-SN2700-D48C8/sai.profile
+++ b/device/mellanox/x86_64-mlnx_msn2700-r0/Mellanox-SN2700-D48C8/sai.profile
@@ -1 +1,2 @@
 SAI_INIT_CONFIG_FILE=/usr/share/sonic/hwsku/sai_2700_48x50g_8x100g.xml
+SAI_VXLAN_SRCPORT_RANGE_ENABLE=1
diff --git a/device/mellanox/x86_64-mlnx_msn3800-r0/Mellanox-SN3800-C64/sai.profile b/device/mellanox/x86_64-mlnx_msn3800-r0/Mellanox-SN3800-C64/sai.profile
deleted file mode 120000
index f6fb0ccbfc97..000000000000
--- a/device/mellanox/x86_64-mlnx_msn3800-r0/Mellanox-SN3800-C64/sai.profile
+++ /dev/null
@@ -1 +0,0 @@
-../ACS-MSN3800/sai.profile
\ No newline at end of file
diff --git a/device/mellanox/x86_64-mlnx_msn3800-r0/Mellanox-SN3800-C64/sai.profile b/device/mellanox/x86_64-mlnx_msn3800-r0/Mellanox-SN3800-C64/sai.profile
new file mode 100644
index 000000000000..4ea8c4897815
--- /dev/null
+++ b/device/mellanox/x86_64-mlnx_msn3800-r0/Mellanox-SN3800-C64/sai.profile
@@ -0,0 +1,2 @@
+SAI_INIT_CONFIG_FILE=/usr/share/sonic/hwsku/sai_3800.xml
+SAI_VXLAN_SRCPORT_RANGE_ENABLE=1
diff --git a/device/mellanox/x86_64-mlnx_msn3800-r0/Mellanox-SN3800-D28C50/sai.profile b/device/mellanox/x86_64-mlnx_msn3800-r0/Mellanox-SN3800-D28C50/sai.profile
index aa37fb30dbd0..60da1086ba81 100644
--- a/device/mellanox/x86_64-mlnx_msn3800-r0/Mellanox-SN3800-D28C50/sai.profile
+++ b/device/mellanox/x86_64-mlnx_msn3800-r0/Mellanox-SN3800-D28C50/sai.profile
@@ -1 +1,2 @@
 SAI_INIT_CONFIG_FILE=/usr/share/sonic/hwsku/sai_3800_28x50g_52x100g.xml
+SAI_VXLAN_SRCPORT_RANGE_ENABLE=1
diff --git a/platform/mellanox/mlnx-sai.mk b/platform/mellanox/mlnx-sai.mk
index 7f16a72cc076..3e6638005d3a 100644
--- a/platform/mellanox/mlnx-sai.mk
+++ b/platform/mellanox/mlnx-sai.mk
@@ -1,6 +1,6 @@
 # Mellanox SAI
 
-MLNX_SAI_VERSION = SAIRel1.18.1.0
+MLNX_SAI_VERSION = SAIRel1.18.3.0
 
 export MLNX_SAI_VERSION
 
diff --git a/platform/mellanox/mlnx-sai/SAI-Implementation b/platform/mellanox/mlnx-sai/SAI-Implementation
index 8dc2afd21ff6..099ad578a059 160000
--- a/platform/mellanox/mlnx-sai/SAI-Implementation
+++ b/platform/mellanox/mlnx-sai/SAI-Implementation
@@ -1 +1 @@
-Subproject commit 8dc2afd21ff6578cd0736b70aaa6ce5f1135265d
+Subproject commit 099ad578a059fa9d5a492561eca1281a830fb7b6