diff --git a/src/sonic-yang-models/doc/Configuration.md b/src/sonic-yang-models/doc/Configuration.md
index 00465d666b..c17ed75e00 100644
--- a/src/sonic-yang-models/doc/Configuration.md
+++ b/src/sonic-yang-models/doc/Configuration.md
@@ -1807,7 +1807,8 @@ optional attributes.
             "speed": "40000",
             "link_training": "off",
             "laser_freq": "191300",
-            "tx_power": "-27.3"
+            "tx_power": "-27.3",
+            "dom_polling": "enabled"
         },
         "Ethernet1": {
             "index": "1",
@@ -1819,7 +1820,8 @@ optional attributes.
             "speed": "40000",
             "link_training": "on",
             "laser_freq": "191300",
-            "tx_power": "-27.3"
+            "tx_power": "-27.3",
+            "dom_polling": "enabled"
         },
         "Ethernet63": {
             "index": "63",
@@ -1829,7 +1831,8 @@ optional attributes.
             "alias": "fortyGigE1/4/16",
             "speed": "40000",
             "laser_freq": "191300",
-            "tx_power": "-27.3"
+            "tx_power": "-27.3",
+            "dom_polling": "disabled"
         }
     }
 }
@@ -1845,7 +1848,8 @@ optional attributes.
             "mtu": "9100",
             "alias": "etp1a",
             "speed": "100000",
-            "subport": 1
+            "subport": 1,
+            "dom_polling": "enabled"
         },
         "Ethernet4": {
             "admin_status": "up",
@@ -1855,7 +1859,8 @@ optional attributes.
             "mtu": "9100",
             "alias": "etp1b",
             "speed": "100000",
-            "subport": 2
+            "subport": 2,
+            "dom_polling": "enabled"
         },
     }
 }
diff --git a/src/sonic-yang-models/tests/files/sample_config_db.json b/src/sonic-yang-models/tests/files/sample_config_db.json
index 0355d7eb7b..0e1ca2bd16 100644
--- a/src/sonic-yang-models/tests/files/sample_config_db.json
+++ b/src/sonic-yang-models/tests/files/sample_config_db.json
@@ -598,7 +598,8 @@
                 "autoneg": "on",
                 "adv_speeds": "all",
                 "adv_interface_types": "all",
-                "subport" : "0"
+                "subport" : "0",
+                "dom_polling":"enabled"
             },
             "Ethernet3": {
                 "alias": "Eth1/4",
@@ -616,7 +617,8 @@
                 "speed": "11100",
                 "tpid": "0x9100",
                 "admin_status": "up",
-                "subport": "2"
+                "subport": "2",
+                "dom_polling":"enabled"
             },
             "Ethernet5": {
                 "alias": "Eth2/2",
diff --git a/src/sonic-yang-models/tests/yang_model_tests/tests/port.json b/src/sonic-yang-models/tests/yang_model_tests/tests/port.json
index cffa5bac65..f248e207a6 100644
--- a/src/sonic-yang-models/tests/yang_model_tests/tests/port.json
+++ b/src/sonic-yang-models/tests/yang_model_tests/tests/port.json
@@ -129,6 +129,14 @@
          "eStrKey": "Range",
          "eStr": "0..8"
      },
+     "PORT_VALID_DOM_POLLING": {
+        "desc": "PORT_VALID_DOM_POLLING no failure."
+    },
+    "PORT_INVALID_DOM_POLLING": {
+        "desc": "PORT_INVALID_DOM_POLLING invalid condition failure.",
+        "eStrKey" : "InvalidValue",
+        "eStr": ["dom_polling"]
+    },
      "PORT_AUTO_FEC_TEST": {
          "desc": "PORT_AUTO_FEC_TEST validate auto mode in fec."
      }
diff --git a/src/sonic-yang-models/tests/yang_model_tests/tests_config/port.json b/src/sonic-yang-models/tests/yang_model_tests/tests_config/port.json
index 5879bbac55..8ac0d96473 100644
--- a/src/sonic-yang-models/tests/yang_model_tests/tests_config/port.json
+++ b/src/sonic-yang-models/tests/yang_model_tests/tests_config/port.json
@@ -640,6 +640,48 @@
         }
     },
 
+    "PORT_INVALID_DOM_POLLING": {
+        "sonic-port:sonic-port": {
+            "sonic-port:PORT": {
+                "PORT_LIST": [
+                    {
+                        "name": "Ethernet0",
+                        "alias": "etp1a",
+                        "lanes": "60, 61",
+                        "speed": 100000,
+                        "subport": 1,
+                        "dom_polling": "on"
+                    }
+                ]
+            }
+        }
+    },
+
+    "PORT_VALID_DOM_POLLING": {
+       "sonic-port:sonic-port": {
+           "sonic-port:PORT": {
+               "PORT_LIST": [
+                   {
+                       "name": "Ethernet0",
+                       "alias": "etp1a",
+                       "lanes": "60, 61",
+                       "speed": 100000,
+                       "subport": 1,
+                       "dom_polling": "enabled"
+                   },
+                   {
+                      "name": "Ethernet2",
+                       "alias": "etp1b",
+                       "lanes": "62, 63",
+                       "speed": 100000,
+                       "subport": 2,
+                       "dom_polling": "disabled"
+                   }
+               ]
+           }
+       }
+   },
+
     "PORT_AUTO_FEC_TEST": {
         "sonic-port:sonic-port": {
             "sonic-port:PORT": {
diff --git a/src/sonic-yang-models/yang-models/sonic-port.yang b/src/sonic-yang-models/yang-models/sonic-port.yang
index f164140d0d..183dd0d4b1 100644
--- a/src/sonic-yang-models/yang-models/sonic-port.yang
+++ b/src/sonic-yang-models/yang-models/sonic-port.yang
@@ -155,6 +155,10 @@ module sonic-port{
 					}
 				}
 
+				leaf dom_polling {
+					type stypes:admin_mode;
+				}
+
 				leaf pfc_asym {
 					type string {
 						pattern "on|off";