diff --git a/src/cm_common/cm_misc.cpp b/src/cm_common/cm_misc.cpp
index b9e28fc..e0f90c0 100644
--- a/src/cm_common/cm_misc.cpp
+++ b/src/cm_common/cm_misc.cpp
@@ -1322,11 +1322,25 @@ status_t IsReachableIP(char *ip)
     if (ip == nullptr) {
         return CM_ERROR;
     }
+    char tmpIp[CM_IP_LENGTH];
+    int rc = -1;
+    rc = strcpy_s(tmpIp, CM_IP_LENGTH, ip);
+    securec_check_errno(rc, (void)rc);
+    char *saveptr = NULL;
+    char *token = strtok_r(tmpIp, ",", &saveptr);
     char cmd[MAXPGPATH] = {0};
-    int rc = snprintf_s(cmd, MAXPGPATH, MAXPGPATH - 1, "timeout 2 ping -c 2 %s > /dev/null 2>&1", ip);
-    securec_check_intval(rc, (void)rc);
-    rc = system(cmd);
-    return rc == 0 ? CM_SUCCESS : CM_ERROR;
+    while (token != NULL) {
+        rc = memset_s(cmd, MAXPGPATH, 0, MAXPGPATH);
+        securec_check_errno(rc, (void)rc);
+        rc = snprintf_s(cmd, MAXPGPATH, MAXPGPATH - 1, "timeout 2 ping -c 2 %s > /dev/null 2>&1", token);
+        securec_check_intval(rc, (void)rc);
+        rc = system(cmd);
+        if (rc == 0) {
+            return CM_SUCCESS;
+        }
+        token = strtok_r(NULL, ",", &saveptr);
+    }
+    return CM_ERROR;
 }
 
 bool IsIPAddrValid(const char *ipAddr)
diff --git a/src/cm_server/cm_server.centralized.conf.sample b/src/cm_server/cm_server.centralized.conf.sample
index fddf8c4..9e490c1 100644
--- a/src/cm_server/cm_server.centralized.conf.sample
+++ b/src/cm_server/cm_server.centralized.conf.sample
@@ -74,6 +74,7 @@ agent_network_timeout = 6
 dn_arbitrate_mode = quorum
 agent_fault_timeout = 60
 third_party_gateway_ip = ''				 # used in 2 nodes cluster for ddb role arbitration with network isolation, 
+                                         # support multiple iP addresses separated by commas, like '172.0.0.1,172.0.0.2'
 										 # when cms_enable_failover_on2nodes is true.
 										 # default ''. if cms_enable_failover_on2nodes is true, this param must be configured.
 cms_enable_failover_on2nodes = false	 # used in 2 nodes cluster. if true, will use third_party_gateway_ip as an arbitrator, 
diff --git a/src/cm_server/cm_server.centralized_new.conf.sample b/src/cm_server/cm_server.centralized_new.conf.sample
index 003098f..9ae30ab 100644
--- a/src/cm_server/cm_server.centralized_new.conf.sample
+++ b/src/cm_server/cm_server.centralized_new.conf.sample
@@ -71,6 +71,7 @@ agent_network_timeout = 6
 dn_arbitrate_mode = quorum
 delay_arbitrate_max_cluster_timeout = 300 # When resources are in the startup process, delay arbitration of the maximum cluster.
 third_party_gateway_ip = ''				 # used in 2 nodes cluster for ddb role arbitration with network isolation, 
+                                         # support multiple iP addresses separated by commas, like '172.0.0.1,172.0.0.2'
 										 # when cms_enable_failover_on2nodes is true.
 										 # default ''. if cms_enable_failover_on2nodes is true, this param must be configured.
 cms_enable_failover_on2nodes = false	 # used in 2 nodes cluster. if true, will use third_party_gateway_ip as an arbitrator, 
diff --git a/src/cm_server/cm_server.conf.sample b/src/cm_server/cm_server.conf.sample
index 4419b43..b6e375c 100644
--- a/src/cm_server/cm_server.conf.sample
+++ b/src/cm_server/cm_server.conf.sample
@@ -71,6 +71,7 @@ ddb_log_suppress_enable = 1              # Indicates whether to enable the log s
 ddb_election_timeout = 3                 # DCC election timeout interval [1S,600S]
 share_disk_path = ''
 third_party_gateway_ip = ''				 # used in 2 nodes cluster for ddb role arbitration with network isolation, 
+                                         # support multiple iP addresses separated by commas, like '172.0.0.1,172.0.0.2'
 										 # when cms_enable_failover_on2nodes is true.
 										 # default ''. if cms_enable_failover_on2nodes is true, this param must be configured.
 cms_enable_failover_on2nodes = false	 # used in 2 nodes cluster. if true, will use third_party_gateway_ip as an arbitrator, 
diff --git a/src/cm_server/cms_common.cpp b/src/cm_server/cms_common.cpp
index 9f19d27..dad634e 100644
--- a/src/cm_server/cms_common.cpp
+++ b/src/cm_server/cms_common.cpp
@@ -352,10 +352,19 @@ void GetTwoNodesArbitrateParams(void) {
         }
     }
 
-    if (g_paramsOn2Nodes.cmsEnableFailoverOn2Nodes == true && !IsIPAddrValid(g_paramsOn2Nodes.thirdPartyGatewayIp)) {
-        write_runlog(ERROR, "parameter \"cms_enable_failover_on2nodes\" is true, "
-            "but parameter \"third_party_gateway_ip\" is invalid, please check!\n");
-        exit(1);
+    if (g_paramsOn2Nodes.cmsEnableFailoverOn2Nodes) {
+        char tmpIp[MAXPGPATH];
+        strcpy_s(tmpIp, MAXPGPATH, g_paramsOn2Nodes.thirdPartyGatewayIp);
+        char *saveptr = NULL;
+        char *token = strtok_r(tmpIp, ",", &saveptr);
+        while (token != NULL) {
+            if (!IsIPAddrValid(token)) {
+                write_runlog(ERROR, "parameter \"cms_enable_failover_on2nodes\" is true, "
+                    "but parameter \"third_party_gateway_ip\" is invalid, please check!\n");
+                exit(1);
+            }
+            token = strtok_r(NULL, ",", &saveptr);
+        }
     }
 
     g_paramsOn2Nodes.cmsNetworkIsolationTimeout = (uint32)get_int_value_from_config(configDir,