diff --git a/device/celestica/x86_64-cel_silverstone-r0/Silverstone-128x100/th3-128x100G.config.bcm b/device/celestica/x86_64-cel_silverstone-r0/Silverstone-128x100/th3-128x100G.config.bcm
index 0b66c8b53814..447de2e85b5a 100644
--- a/device/celestica/x86_64-cel_silverstone-r0/Silverstone-128x100/th3-128x100G.config.bcm
+++ b/device/celestica/x86_64-cel_silverstone-r0/Silverstone-128x100/th3-128x100G.config.bcm
@@ -11,6 +11,8 @@ pll_bypass=1
 
 init_all_modules=0
 
+sai_tunnel_global_sip_mask_enable=1
+
 portmap_20=33:100:2
 portmap_21=35:100:2
 portmap_22=37:100:2
diff --git a/device/celestica/x86_64-cel_silverstone-r0/Silverstone/th3-32x400G.config.bcm b/device/celestica/x86_64-cel_silverstone-r0/Silverstone/th3-32x400G.config.bcm
index 5e5fc82aeace..400fbdcf7573 100644
--- a/device/celestica/x86_64-cel_silverstone-r0/Silverstone/th3-32x400G.config.bcm
+++ b/device/celestica/x86_64-cel_silverstone-r0/Silverstone/th3-32x400G.config.bcm
@@ -12,6 +12,7 @@ pll_bypass=1
 
 init_all_modules=0
 
+sai_tunnel_global_sip_mask_enable=1
 
 
 #portmap_38=257:10