diff --git a/src/sonic-yang-mgmt/yang-models/sonic-port.yang b/src/sonic-yang-mgmt/yang-models/sonic-port.yang
index c56064e44aab..84bdf90351c5 100644
--- a/src/sonic-yang-mgmt/yang-models/sonic-port.yang
+++ b/src/sonic-yang-mgmt/yang-models/sonic-port.yang
@@ -75,7 +75,7 @@ module sonic-port{
 
 				leaf index {
 					type uint8 {
-						range 1..128;
+						range 0..256;
 					}
 				}