diff --git a/src/sonic-yang-models/tests/yang_model_tests/test_yang_model.py b/src/sonic-yang-models/tests/yang_model_tests/test_yang_model.py
index 3bc2886f38c7..39f63379ff2b 100644
--- a/src/sonic-yang-models/tests/yang_model_tests/test_yang_model.py
+++ b/src/sonic-yang-models/tests/yang_model_tests/test_yang_model.py
@@ -218,6 +218,14 @@ def initTest(self):
             'DEVICE_METADATA_TYPE_INCORRECT_PATTERN': {
                 'desc': 'DEVICE_METADATA_TYPE_INCORRECT_PATTERN pattern failure.',
                 'eStr': self.defaultYANGFailure['Pattern']
+            },
+            'BREAKOUT_CFG_CORRECT_MODES': {
+                'desc': 'BREAKOUT_CFG correct breakout modes',
+                'eStr': self.defaultYANGFailure['None']
+            },
+            'BREAKOUT_CFG_INCORRECT_MODES': {
+                'desc': 'BREAKOUT_CFG wrong breakout modes',
+                'eStr': self.defaultYANGFailure['Pattern']
             }
         }
 
diff --git a/src/sonic-yang-models/tests/yang_model_tests/yangTest.json b/src/sonic-yang-models/tests/yang_model_tests/yangTest.json
index 90d748309dca..debdca848713 100644
--- a/src/sonic-yang-models/tests/yang_model_tests/yangTest.json
+++ b/src/sonic-yang-models/tests/yang_model_tests/yangTest.json
@@ -1746,5 +1746,61 @@
         "UNKNOWN_TABLE": {
             "Error": "This Table is for testing, This Table does not have YANG models."
         }
-    }
+	},
+	"BREAKOUT_CFG_CORRECT_MODES": {
+		"sonic-breakout_cfg:sonic-breakout_cfg": {
+			"sonic-breakout_cfg:BREAKOUT_CFG": {
+				"BREAKOUT_CFG_LIST": [
+					{
+						"brkout_mode": "1x200G[100G,50G,40G,25G,10G,1G]",
+						"port": "Ethernet0"
+					},
+					{
+						"brkout_mode": "2x100G[50G,40G,25G,10G,1G]",
+						"port": "Ethernet8"
+					},
+					{
+						"brkout_mode": "4x50G[40G,25G,10G,1G]",
+						"port": "Ethernet4"
+					},
+					{
+						"brkout_mode": "1x25G[10G]",
+						"port": "Ethernet12"
+					},
+					{
+						"brkout_mode": "1x100G[50G,40G,25G,10G]",
+						"port": "Ethernet16"
+					},
+					{
+						"brkout_mode": "2x50G[40G,25G,10G]",
+						"port": "Ethernet20"
+					},
+					{
+						"brkout_mode": "1x400G[200G,100G,50G,40G,25G,10G,1G]",
+						"port": "Ethernet24"
+					}
+				]
+			}
+		}
+	},
+	"BREAKOUT_CFG_INCORRECT_MODES": {
+		"sonic-breakout_cfg:sonic-breakout_cfg": {
+			"sonic-breakout_cfg:BREAKOUT_CFG": {
+				"BREAKOUT_CFG_LIST": [
+					{
+						"brkout_mode": "1x500G[100G,50G,40G,25G,10G,1G]",
+						"port": "Ethernet0"
+					},
+					{
+						"brkout_mode": "2x300G[50G,40G,25G,1G]",
+						"port": "Ethernet8"
+					},
+					{
+						"brkout_mode": "5x50G[40G,25G]",
+						"port": "Ethernet4"
+					}
+				]
+			}
+		}
+	}
 }
diff --git a/src/sonic-yang-models/yang-models/sonic-breakout_cfg.yang b/src/sonic-yang-models/yang-models/sonic-breakout_cfg.yang
index 7cc13f1731c7..1ea2c7df00de 100644
--- a/src/sonic-yang-models/yang-models/sonic-breakout_cfg.yang
+++ b/src/sonic-yang-models/yang-models/sonic-breakout_cfg.yang
@@ -51,7 +51,7 @@ module sonic-breakout_cfg {
                          * Add any other breakout-mode to allow Dynamic Port
                          * Breakout to that breakout-mode.
                          */
-                        pattern '1x100G\[40G\]|2x50G|4x25G\[10G\]|2x25G\(2\)\+1x50G\(2\)|1x50G\(2\)\+2x25G\(2\)|1x400G|2x200G|4x100G|8x50G';
+                        pattern '1x100G\[40G\]|2x50G|4x25G\[10G\]|2x25G\(2\)\+1x50G\(2\)|1x50G\(2\)\+2x25G\(2\)|1x400G|2x200G|4x100G|8x50G|1x200G\[100G,50G,40G,25G,10G,1G\]|2x100G\[50G,40G,25G,10G,1G\]|4x50G\[40G,25G,10G,1G\]|1x25G\[10G\]|1x100G\[50G,40G,25G,10G\]|2x50G\[40G,25G,10G\]|4x25G\[10G\]|1x25G\[10G,1G\]|1x100G\[50G,40G,25G,10G,1G\]|2x50G\[40G,25G,10G,1G\]|4x25G\[10G,1G\]|1x400G\[200G,100G,50G,40G,25G,10G,1G\]|2x200G\[100G,50G,40G,25G,10G,1G\]|4x100G\[50G,40G,25G,10G,1G\]';
                     }
                 }
             }
diff --git a/src/sonic-yang-models/yang-models/sonic-port.yang b/src/sonic-yang-models/yang-models/sonic-port.yang
index 8a41d13f1a49..61338234126c 100644
--- a/src/sonic-yang-models/yang-models/sonic-port.yang
+++ b/src/sonic-yang-models/yang-models/sonic-port.yang
@@ -63,7 +63,7 @@ module sonic-port{
 				leaf speed {
 					mandatory true;
 					type uint32 {
-						range 1..100000;
+						range 1..400000;
 					}
 				}