diff --git a/common/schema.h b/common/schema.h
index f5084b80..227e4623 100644
--- a/common/schema.h
+++ b/common/schema.h
@@ -73,6 +73,8 @@ namespace swss {
 #define APP_STP_PORT_STATE_TABLE_NAME       "STP_PORT_STATE_TABLE"
 #define APP_STP_FASTAGEING_FLUSH_TABLE_NAME "STP_FASTAGEING_FLUSH_TABLE"
 #define APP_STP_BPDU_GUARD_TABLE_NAME       "STP_BPDU_GUARD_TABLE"
+#define APP_MCLAG_FDB_TABLE_NAME            "MCLAG_FDB_TABLE"
+#define APP_ISOLATION_GROUP_TABLE_NAME      "ISOLATION_GROUP_TABLE"
 
 /***** ASIC DATABASE *****/
 #define ASIC_TEMPERATURE_INFO_TABLE_NAME    "ASIC_TEMPERATURE_INFO"
@@ -282,6 +284,10 @@ namespace swss {
 #define CFG_STP_VLAN_PORT_TABLE_NAME                "STP_VLAN_PORT"
 #define CFG_STP_PORT_TABLE_NAME                     "STP_PORT"
 
+#define CFG_MCLAG_TABLE_NAME                        "MCLAG_DOMAIN"
+#define CFG_MCLAG_INTF_TABLE_NAME                   "MCLAG_INTERFACE"
+#define CFG_MCLAG_UNIQUE_IP_TABLE_NAME              "MCLAG_UNIQUE_IP"
+  
 #define CFG_PORT_STORM_CONTROL_TABLE_NAME           "PORT_STORM_CONTROL"
 
 #define CFG_RATES_TABLE_NAME                        "RATES"
@@ -333,6 +339,10 @@ namespace swss {
 #define STATE_BGP_TABLE_NAME                        "BGP_STATE_TABLE"
 #define STATE_DEBUG_COUNTER_CAPABILITIES_NAME       "DEBUG_COUNTER_CAPABILITIES"
 #define STATE_NAT_RESTORE_TABLE_NAME                "NAT_RESTORE_TABLE"
+#define STATE_MCLAG_TABLE_NAME                      "MCLAG_TABLE"
+#define STATE_MCLAG_LOCAL_INTF_TABLE_NAME           "MCLAG_LOCAL_INTF_TABLE"
+#define STATE_MCLAG_REMOTE_INTF_TABLE_NAME          "MCLAG_REMOTE_INTF_TABLE"
+#define STATE_MCLAG_REMOTE_FDB_TABLE_NAME           "MCLAG_REMOTE_FDB_TABLE"
 
 #define STATE_STP_TABLE_NAME                        "STP_TABLE"