diff --git a/src/common/src/tglobal.c b/src/common/src/tglobal.c
index 80bf48364c2c634a47122b0834f07d8c229c0ef7..4ed4e0473bdf3c11c2838842b24c15d886a02f2e 100644
--- a/src/common/src/tglobal.c
+++ b/src/common/src/tglobal.c
@@ -430,10 +430,10 @@ static void doInitGlobalConfig(void) {
   // port
   cfg.option = "serverPort";
   cfg.ptr = &tsServerPort;
-  cfg.valType = TAOS_CFG_VTYPE_INT16;
+  cfg.valType = TAOS_CFG_VTYPE_UINT16;
   cfg.cfgType = TSDB_CFG_CTYPE_B_CONFIG | TSDB_CFG_CTYPE_B_SHOW | TSDB_CFG_CTYPE_B_CLIENT;
   cfg.minValue = 1;
-  cfg.maxValue = 65535;
+  cfg.maxValue = 65056;
   cfg.ptrLength = 0;
   cfg.unitType = TAOS_CFG_UTYPE_NONE;
   taosInitConfigOption(cfg);
diff --git a/src/dnode/src/dnodeCheck.c b/src/dnode/src/dnodeCheck.c
index 94d23609505bf952225b8dd2c752754dbd5d55b9..87baff30673afc68eb23a00bef279433a422ba67 100644
--- a/src/dnode/src/dnodeCheck.c
+++ b/src/dnode/src/dnodeCheck.c
@@ -29,7 +29,7 @@ typedef struct {
 static  SCheckItem  tsCheckItem[TSDB_CHECK_ITEM_MAX] = {{0}};
 int64_t tsMinFreeMemSizeForStart = 0;
 
-static int32_t bindTcpPort(int16_t port) {
+static int32_t bindTcpPort(uint16_t port) {
   SOCKET serverSocket;
   struct sockaddr_in server_addr;
 
@@ -85,9 +85,9 @@ static int32_t bindUdpPort(int16_t port) {
 
 static int32_t dnodeCheckNetwork() {
   int32_t ret;
-  int16_t startPort = tsServerPort;
+  uint16_t startPort = tsServerPort;
 
-  for (int16_t port = startPort; port < startPort + 12; port++) {
+  for (uint16_t port = startPort; port < startPort + 12; port++) {
     ret = bindTcpPort(port);
     if (0 != ret) {
       dError("failed to tcp bind port %d, quit", port);
diff --git a/src/util/inc/tconfig.h b/src/util/inc/tconfig.h
index 9923409885fad30cbadd9354349075708b1a7fda..fdb2595fd8d3b1659800ca3a5b88c32b6fe95e93 100644
--- a/src/util/inc/tconfig.h
+++ b/src/util/inc/tconfig.h
@@ -44,6 +44,7 @@ enum {
   TAOS_CFG_VTYPE_INT8,
   TAOS_CFG_VTYPE_INT16,
   TAOS_CFG_VTYPE_INT32,
+  TAOS_CFG_VTYPE_UINT16,
   TAOS_CFG_VTYPE_FLOAT,
   TAOS_CFG_VTYPE_STRING,
   TAOS_CFG_VTYPE_IPSTR,
diff --git a/src/util/src/tconfig.c b/src/util/src/tconfig.c
index 7a92750f8f2e89a93557d367b0c4772a2faaa57d..c4bd57760222ac3da7d25510cc2f434fe0cf0cac 100644
--- a/src/util/src/tconfig.c
+++ b/src/util/src/tconfig.c
@@ -95,6 +95,23 @@ static void taosReadInt16Config(SGlobalCfg *cfg, char *input_value) {
   }
 }
 
+static void taosReadUInt16Config(SGlobalCfg *cfg, char *input_value) {
+  int32_t  value = atoi(input_value);
+  uint16_t *option = (uint16_t *)cfg->ptr;
+  if (value < cfg->minValue || value > cfg->maxValue) {
+    uError("config option:%s, input value:%s, out of range[%f, %f], use default value:%d",
+           cfg->option, input_value, cfg->minValue, cfg->maxValue, *option);
+  } else {
+    if (cfg->cfgStatus <= TAOS_CFG_CSTATUS_FILE) {
+      *option = (uint16_t)value;
+      cfg->cfgStatus = TAOS_CFG_CSTATUS_FILE;
+    } else {
+      uWarn("config option:%s, input value:%s, is configured by %s, use %d", cfg->option, input_value,
+            tsCfgStatusStr[cfg->cfgStatus], *option);
+    }
+  }
+}
+
 static void taosReadInt8Config(SGlobalCfg *cfg, char *input_value) {
   int32_t  value = atoi(input_value);
   int8_t *option = (int8_t *)cfg->ptr;
@@ -239,6 +256,9 @@ static void taosReadConfigOption(const char *option, char *value, char *value2,
       case TAOS_CFG_VTYPE_INT32:
         taosReadInt32Config(cfg, value);
         break;
+      case TAOS_CFG_VTYPE_UINT16:
+        taosReadUInt16Config(cfg, value);
+        break;
       case TAOS_CFG_VTYPE_FLOAT:
         taosReadFloatConfig(cfg, value);
         break;
@@ -422,6 +442,9 @@ void taosPrintGlobalCfg() {
       case TAOS_CFG_VTYPE_INT32:
         uInfo(" %s:%s%d%s", cfg->option, blank, *((int32_t *)cfg->ptr), tsGlobalUnit[cfg->unitType]);
         break;
+      case TAOS_CFG_VTYPE_UINT16:
+        uInfo(" %s:%s%d%s", cfg->option, blank, *((uint16_t *)cfg->ptr), tsGlobalUnit[cfg->unitType]);
+        break;
       case TAOS_CFG_VTYPE_FLOAT:
         uInfo(" %s:%s%f%s", cfg->option, blank, *((float *)cfg->ptr), tsGlobalUnit[cfg->unitType]);
         break;
@@ -459,6 +482,9 @@ static void taosDumpCfg(SGlobalCfg *cfg) {
       case TAOS_CFG_VTYPE_INT32:
         printf(" %s:%s%d%s\n", cfg->option, blank, *((int32_t *)cfg->ptr), tsGlobalUnit[cfg->unitType]);
         break;
+      case TAOS_CFG_VTYPE_UINT16:
+        printf(" %s:%s%d%s\n", cfg->option, blank, *((uint16_t *)cfg->ptr), tsGlobalUnit[cfg->unitType]);
+        break;
       case TAOS_CFG_VTYPE_FLOAT:
         printf(" %s:%s%f%s\n", cfg->option, blank, *((float *)cfg->ptr), tsGlobalUnit[cfg->unitType]);
         break;