diff --git a/device/accton/x86_64-accton_as5835_54x-r0/Accton-AS5835-54X/mv2-as5835-48x10G+6x100G.config.bcm b/device/accton/x86_64-accton_as5835_54x-r0/Accton-AS5835-54X/mv2-as5835-48x10G+6x100G.config.bcm
index fb40d79491..287fc13061 100644
--- a/device/accton/x86_64-accton_as5835_54x-r0/Accton-AS5835-54X/mv2-as5835-48x10G+6x100G.config.bcm
+++ b/device/accton/x86_64-accton_as5835_54x-r0/Accton-AS5835-54X/mv2-as5835-48x10G+6x100G.config.bcm
@@ -41,6 +41,15 @@ skip_L2_USER_ENTRY=0
 bcm_tunnel_term_compatible_mode=1
 l3_alpm_ipv6_128b_bkt_rsvd=1
 
+#vxlan
+use_all_splithorizon_groups=1
+riot_enable=1
+sai_tunnel_support=1
+riot_overlay_l3_intf_mem_size=4096
+riot_overlay_l3_egress_mem_size=32768
+riot_overlay_ecmp_resilient_hash_size=16384
+flow_init_mode=1
+
 #FC0
 dport_map_port_1=1
 dport_map_port_2=2
diff --git a/device/accton/x86_64-accton_as7326_56x-r0/Accton-AS7326-56X/td3-as7326-48x25G+8x100G.config.bcm b/device/accton/x86_64-accton_as7326_56x-r0/Accton-AS7326-56X/td3-as7326-48x25G+8x100G.config.bcm
index 21ca8a2fa5..ea081e7255 100755
--- a/device/accton/x86_64-accton_as7326_56x-r0/Accton-AS7326-56X/td3-as7326-48x25G+8x100G.config.bcm
+++ b/device/accton/x86_64-accton_as7326_56x-r0/Accton-AS7326-56X/td3-as7326-48x25G+8x100G.config.bcm
@@ -34,6 +34,15 @@ skip_L2_USER_ENTRY=0
 bcm_tunnel_term_compatible_mode=1
 l3_alpm_ipv6_128b_bkt_rsvd=1
 
+#vxlan
+use_all_splithorizon_groups=1
+riot_enable=1
+sai_tunnel_support=1
+riot_overlay_l3_intf_mem_size=4096
+riot_overlay_l3_egress_mem_size=32768
+riot_overlay_ecmp_resilient_hash_size=16384
+flow_init_mode=1
+
 dport_map_port_1=6
 dport_map_port_2=2
 dport_map_port_3=1
diff --git a/device/accton/x86_64-accton_as7726_32x-r0/Accton-AS7726-32X/td3-as7726-32x100G.config.bcm b/device/accton/x86_64-accton_as7726_32x-r0/Accton-AS7726-32X/td3-as7726-32x100G.config.bcm
index 1dcd7e3ef5..c987c25af5 100755
--- a/device/accton/x86_64-accton_as7726_32x-r0/Accton-AS7726-32X/td3-as7726-32x100G.config.bcm
+++ b/device/accton/x86_64-accton_as7726_32x-r0/Accton-AS7726-32X/td3-as7726-32x100G.config.bcm
@@ -36,6 +36,15 @@ bcm_tunnel_term_compatible_mode=1
 l3_alpm_ipv6_128b_bkt_rsvd=1
 phy_an_c73=1
 
+#vxlan
+use_all_splithorizon_groups=1
+riot_enable=1
+sai_tunnel_support=1
+riot_overlay_l3_intf_mem_size=4096
+riot_overlay_l3_egress_mem_size=32768
+riot_overlay_ecmp_resilient_hash_size=16384
+flow_init_mode=1
+
 dport_map_port_1=1
 dport_map_port_5=2
 dport_map_port_9=3