diff --git a/api/src/org/apache/cloudstack/api/ApiConstants.java b/api/src/org/apache/cloudstack/api/ApiConstants.java
index cd8379b9f69..e08923c29ba 100755
--- a/api/src/org/apache/cloudstack/api/ApiConstants.java
+++ b/api/src/org/apache/cloudstack/api/ApiConstants.java
@@ -492,6 +492,7 @@ public class ApiConstants {
     public static final String BAREMETAL_DISCOVER_NAME = "baremetaldiscovername";
     public static final String UCS_DN = "ucsdn";
     public static final String GSLB_PROVIDER = "gslbprovider";
+    public static final String EXCLUSIVE_GSLB_PROVIDER = "isexclusivegslbprovider";
     public static final String GSLB_PROVIDER_PUBLIC_IP = "gslbproviderpublicip";
     public static final String GSLB_PROVIDER_PRIVATE_IP = "gslbproviderprivateip";
     public static final String VM_SNAPSHOT_DESCRIPTION = "description";
diff --git a/engine/schema/src/com/cloud/network/dao/ExternalLoadBalancerDeviceDaoImpl.java b/engine/schema/src/com/cloud/network/dao/ExternalLoadBalancerDeviceDaoImpl.java
index e8ef0d22420..9e0cfc42f87 100644
--- a/engine/schema/src/com/cloud/network/dao/ExternalLoadBalancerDeviceDaoImpl.java
+++ b/engine/schema/src/com/cloud/network/dao/ExternalLoadBalancerDeviceDaoImpl.java
@@ -54,6 +54,7 @@ public class ExternalLoadBalancerDeviceDaoImpl extends GenericDaoBase<ExternalLo
         allocationStateSearch.and("physicalNetworkId", allocationStateSearch.entity().getPhysicalNetworkId(), Op.EQ);
         allocationStateSearch.and("providerName", allocationStateSearch.entity().getProviderName(), Op.EQ);
         allocationStateSearch.and("allocationState", allocationStateSearch.entity().getAllocationState(), Op.EQ);
+        allocationStateSearch.and("exclusiveGslbProvider", allocationStateSearch.entity().getExclusiveGslbProvider(), Op.EQ);
         allocationStateSearch.done();
 
         deviceStatusSearch = createSearchBuilder();
@@ -95,6 +96,7 @@ public class ExternalLoadBalancerDeviceDaoImpl extends GenericDaoBase<ExternalLo
         sc.setParameters("physicalNetworkId", physicalNetworkId);
         sc.setParameters("providerName", provider_name);
         sc.setParameters("allocationState", state);
+        sc.setParameters("exclusiveGslbProvider", false);
         return search(sc, null);
     }
 
diff --git a/engine/schema/src/com/cloud/network/dao/ExternalLoadBalancerDeviceVO.java b/engine/schema/src/com/cloud/network/dao/ExternalLoadBalancerDeviceVO.java
index c1c983489a3..072d294b34c 100644
--- a/engine/schema/src/com/cloud/network/dao/ExternalLoadBalancerDeviceVO.java
+++ b/engine/schema/src/com/cloud/network/dao/ExternalLoadBalancerDeviceVO.java
@@ -68,7 +68,10 @@ public class ExternalLoadBalancerDeviceVO implements InternalIdentity, Identity
     @Column(name="is_gslb_provider")
     private boolean gslbProvider;
 
-    @Column(name="gslb_site_publicip")
+    @Column(name = "is_exclusive_gslb_provider")
+    private boolean exclusiveGslbProvider;
+
+    @Column(name = "gslb_site_publicip")
     private String gslbSitePublicIP;
 
     @Column(name="gslb_site_privateip")
@@ -201,6 +204,14 @@ public class ExternalLoadBalancerDeviceVO implements InternalIdentity, Identity
         this.gslbProvider = gslbProvider;
     }
 
+    public boolean getExclusiveGslbProvider() {
+        return exclusiveGslbProvider;
+    }
+
+    public void setExclusiveGslbProvider(boolean exclusiveGslbProvider) {
+        this.exclusiveGslbProvider = exclusiveGslbProvider;
+    }
+
     public void setGslbSitePublicIP(String gslbSitePublicIP) {
         this.gslbSitePublicIP = gslbSitePublicIP;
     }
diff --git a/plugins/network-elements/f5/src/com/cloud/network/element/F5ExternalLoadBalancerElement.java b/plugins/network-elements/f5/src/com/cloud/network/element/F5ExternalLoadBalancerElement.java
index fc2256b2a56..77916ddafd7 100644
--- a/plugins/network-elements/f5/src/com/cloud/network/element/F5ExternalLoadBalancerElement.java
+++ b/plugins/network-elements/f5/src/com/cloud/network/element/F5ExternalLoadBalancerElement.java
@@ -320,7 +320,7 @@ public class F5ExternalLoadBalancerElement extends ExternalLoadBalancerDeviceMan
 
         String deviceType = NetworkDevice.F5BigIpLoadBalancer.getName();
         lbDeviceVO = addExternalLoadBalancer(pNetwork.getId(), cmd.getUrl(), cmd.getUsername(), cmd.getPassword(),
-                deviceType, new F5BigIpResource(), false, null, null);
+                deviceType, new F5BigIpResource(), false, false, null, null);
 
         if (lbDeviceVO != null) {
             lbHost = _hostDao.findById(lbDeviceVO.getHostId());
@@ -374,7 +374,7 @@ public class F5ExternalLoadBalancerElement extends ExternalLoadBalancerDeviceMan
         }
 
         return addExternalLoadBalancer(cmd.getPhysicalNetworkId(), cmd.getUrl(), cmd.getUsername(), cmd.getPassword(),
-                deviceName, new F5BigIpResource(), false, null, null);
+                deviceName, new F5BigIpResource(), false, false, null, null);
 
     }
 
diff --git a/plugins/network-elements/netscaler/src/com/cloud/api/commands/AddNetscalerLoadBalancerCmd.java b/plugins/network-elements/netscaler/src/com/cloud/api/commands/AddNetscalerLoadBalancerCmd.java
index d04a183139a..155247fc920 100644
--- a/plugins/network-elements/netscaler/src/com/cloud/api/commands/AddNetscalerLoadBalancerCmd.java
+++ b/plugins/network-elements/netscaler/src/com/cloud/api/commands/AddNetscalerLoadBalancerCmd.java
@@ -59,7 +59,7 @@ public class AddNetscalerLoadBalancerCmd extends BaseAsyncCmd {
 
     @Parameter(name = ApiConstants.GSLB_PROVIDER, type = CommandType.BOOLEAN, required = false,
             description = "true if NetScaler device being added is for providing GSLB service")
-    private boolean  isGslbProvider;
+    private Boolean isGslbProvider;
 
     @Parameter(name = ApiConstants.GSLB_PROVIDER_PUBLIC_IP, type = CommandType.STRING, required = false,
             description = "public IP of the site")
@@ -69,6 +69,12 @@ public class AddNetscalerLoadBalancerCmd extends BaseAsyncCmd {
             description = "public IP of the site")
     private String gslbSitePrivateIp;
 
+    @Parameter(name = ApiConstants.EXCLUSIVE_GSLB_PROVIDER,
+            type = CommandType.BOOLEAN,
+            required = false,
+            description = "true if NetScaler device being added is for providing GSLB service exclusively and can not be used for LB")
+    private Boolean isExclusiveGslbProvider;
+
     /////////////////////////////////////////////////////
     /////////////////// Accessors ///////////////////////
     /////////////////////////////////////////////////////
@@ -94,7 +100,19 @@ public class AddNetscalerLoadBalancerCmd extends BaseAsyncCmd {
     }
 
     public boolean isGslbProvider() {
-        return isGslbProvider;
+        if (isGslbProvider != null) {
+            return isGslbProvider;
+        } else {
+            return false;
+        }
+    }
+
+    public boolean isExclusiveGslbProvider() {
+        if (isExclusiveGslbProvider != null) {
+            return isExclusiveGslbProvider;
+        } else {
+            return false;
+        }
     }
 
     public String getSitePublicIp() {
diff --git a/plugins/network-elements/netscaler/src/com/cloud/api/response/NetscalerLoadBalancerResponse.java b/plugins/network-elements/netscaler/src/com/cloud/api/response/NetscalerLoadBalancerResponse.java
index 1348788da25..6abbc0792d0 100644
--- a/plugins/network-elements/netscaler/src/com/cloud/api/response/NetscalerLoadBalancerResponse.java
+++ b/plugins/network-elements/netscaler/src/com/cloud/api/response/NetscalerLoadBalancerResponse.java
@@ -63,7 +63,12 @@ public class NetscalerLoadBalancerResponse extends BaseResponse {
     @SerializedName(ApiConstants.GSLB_PROVIDER) @Param(description="true if NetScaler device is provisioned to be a GSLB service provider")
     private Boolean isGslbProvider;
 
-    @SerializedName(ApiConstants.GSLB_PROVIDER_PUBLIC_IP) @Param(description="public IP of the NetScaler representing GSLB site")
+    @SerializedName(ApiConstants.EXCLUSIVE_GSLB_PROVIDER)
+    @Param(description = "true if NetScaler device is provisioned exclusively to be a GSLB service provider")
+    private Boolean isExclusiveGslbProvider;
+
+    @SerializedName(ApiConstants.GSLB_PROVIDER_PUBLIC_IP)
+    @Param(description = "public IP of the NetScaler representing GSLB site")
     private String gslbSitePublicIp;
 
     @SerializedName(ApiConstants.GSLB_PROVIDER_PRIVATE_IP) @Param(description="private IP of the NetScaler representing GSLB site")
@@ -122,6 +127,10 @@ public class NetscalerLoadBalancerResponse extends BaseResponse {
         this.isGslbProvider = isGslbProvider;
     }
 
+    public void setExclusiveGslbProvider(boolean isExclusiveGslbProvider) {
+        this.isExclusiveGslbProvider = isExclusiveGslbProvider;
+    }
+
     public void setGslbSitePublicIp(String publicIP) {
         this.gslbSitePublicIp = publicIP;
     }
diff --git a/plugins/network-elements/netscaler/src/com/cloud/network/element/NetscalerElement.java b/plugins/network-elements/netscaler/src/com/cloud/network/element/NetscalerElement.java
index de3d7e86665..2ed2605a19f 100644
--- a/plugins/network-elements/netscaler/src/com/cloud/network/element/NetscalerElement.java
+++ b/plugins/network-elements/netscaler/src/com/cloud/network/element/NetscalerElement.java
@@ -381,9 +381,14 @@ public class NetscalerElement extends ExternalLoadBalancerDeviceManagerImpl impl
 
         }
 
-        ExternalLoadBalancerDeviceVO lbDeviceVO = addExternalLoadBalancer(cmd.getPhysicalNetworkId(), cmd.getUrl(),
-                cmd.getUsername(), cmd.getPassword(), deviceName, new NetscalerResource(), cmd.isGslbProvider(),
-                cmd.getSitePublicIp(), cmd.getSitePrivateIp());
+        if (cmd.isExclusiveGslbProvider() && !cmd.isGslbProvider()) {
+            throw new InvalidParameterValueException("NetScaler can be provisioned to be exclusive GSLB service provider" +
+                    " only if its being configured as GSLB service provider also.");
+        }
+
+        ExternalLoadBalancerDeviceVO lbDeviceVO =
+            addExternalLoadBalancer(cmd.getPhysicalNetworkId(), cmd.getUrl(), cmd.getUsername(), cmd.getPassword(), deviceName, new NetscalerResource(),
+                cmd.isGslbProvider(), cmd.isExclusiveGslbProvider(), cmd.getSitePublicIp(), cmd.getSitePrivateIp());
 
         return lbDeviceVO;
     }
@@ -605,6 +610,7 @@ public class NetscalerElement extends ExternalLoadBalancerDeviceManagerImpl impl
         response.setObjectName("netscalerloadbalancer");
 
         response.setGslbProvider(lbDeviceVO.getGslbProvider());
+        response.setExclusiveGslbProvider(lbDeviceVO.getExclusiveGslbProvider());
         response.setGslbSitePublicIp(lbDeviceVO.getGslbSitePublicIP());
         response.setGslbSitePrivateIp(lbDeviceVO.getGslbSitePrivateIP());
 
diff --git a/server/src/com/cloud/network/ExternalLoadBalancerDeviceManager.java b/server/src/com/cloud/network/ExternalLoadBalancerDeviceManager.java
index cb00614b086..07740adb76f 100644
--- a/server/src/com/cloud/network/ExternalLoadBalancerDeviceManager.java
+++ b/server/src/com/cloud/network/ExternalLoadBalancerDeviceManager.java
@@ -47,9 +47,8 @@ public interface ExternalLoadBalancerDeviceManager extends Manager{
      * @param server resource that will handle the commands specific to this device 
      * @return Host object for the device added
      */
-    public ExternalLoadBalancerDeviceVO addExternalLoadBalancer(long physicalNetworkId, String url, String username,
-                String password, String deviceName, ServerResource resource, boolean gslbProvider,
-                String gslbSitePublicIp, String gslbSitePrivateIp);
+    public ExternalLoadBalancerDeviceVO addExternalLoadBalancer(long physicalNetworkId, String url, String username, String password, String deviceName,
+        ServerResource resource, boolean gslbProvider, boolean exclusiveGslbProvider, String gslbSitePublicIp, String gslbSitePrivateIp);
 
     /**
      * deletes load balancer device added in to a physical network
diff --git a/server/src/com/cloud/network/ExternalLoadBalancerDeviceManagerImpl.java b/server/src/com/cloud/network/ExternalLoadBalancerDeviceManagerImpl.java
index 8d54541dd62..78cc88d3ce8 100644
--- a/server/src/com/cloud/network/ExternalLoadBalancerDeviceManagerImpl.java
+++ b/server/src/com/cloud/network/ExternalLoadBalancerDeviceManagerImpl.java
@@ -197,9 +197,9 @@ public abstract class ExternalLoadBalancerDeviceManagerImpl extends AdapterBase
 
     @Override
     @DB
-    public ExternalLoadBalancerDeviceVO addExternalLoadBalancer(long physicalNetworkId, String url,
-            String username, String password, final String deviceName, ServerResource resource, final boolean gslbProvider,
-            final String gslbSitePublicIp, final String gslbSitePrivateIp) {
+    public ExternalLoadBalancerDeviceVO addExternalLoadBalancer(long physicalNetworkId, String url, String username, String password, final String deviceName,
+        ServerResource resource, final boolean gslbProvider, final boolean exclusiveGslbProivider,
+        final String gslbSitePublicIp, final String gslbSitePrivateIp) {
 
         PhysicalNetworkVO pNetwork = null;
         final NetworkDevice ntwkDevice = NetworkDevice.getNetworkDevice(deviceName);
@@ -283,6 +283,7 @@ public abstract class ExternalLoadBalancerDeviceManagerImpl extends AdapterBase
                         if (gslbProvider) {
                             lbDeviceVO.setGslbSitePublicIP(gslbSitePublicIp);
                             lbDeviceVO.setGslbSitePrivateIP(gslbSitePrivateIp);
+                            lbDeviceVO.setExclusiveGslbProvider(exclusiveGslbProivider);
                         }
                         _externalLoadBalancerDeviceDao.persist(lbDeviceVO);
                         DetailVO hostDetail = new DetailVO(host.getId(), ApiConstants.LOAD_BALANCER_DEVICE_ID, String.valueOf(lbDeviceVO.getId()));
@@ -527,9 +528,9 @@ public abstract class ExternalLoadBalancerDeviceManagerImpl extends AdapterBase
                                     "&publicipvlan=" + publicIPVlanTag + "&publicipgateway=" + publicIPgateway;
                             ExternalLoadBalancerDeviceVO lbAppliance = null;
                             try {
-                                lbAppliance = addExternalLoadBalancer(physicalNetworkId, url, username, password,
-                                        createLbAnswer.getDeviceName(), createLbAnswer.getServerResource(), false,
-                                        null, null);
+                                lbAppliance =
+                                    addExternalLoadBalancer(physicalNetworkId, url, username, password, createLbAnswer.getDeviceName(),
+                                        createLbAnswer.getServerResource(), false, false, null, null);
                             } catch (Exception e) {
                                 s_logger.error("Failed to add load balancer appliance in to cloudstack due to " + e.getMessage()
                                         + ". So provisioned load balancer appliance will be destroyed.");
diff --git a/setup/db/db/schema-421to430.sql b/setup/db/db/schema-421to430.sql
index 3a192950c2d..1d9fe8db049 100644
--- a/setup/db/db/schema-421to430.sql
+++ b/setup/db/db/schema-421to430.sql
@@ -822,3 +822,5 @@ INSERT IGNORE INTO `cloud`.`configuration` VALUES ("Advanced", 'DEFAULT', 'VMSna
 INSERT IGNORE INTO `cloud`.`configuration` VALUES ("Advanced", 'DEFAULT', 'VMSnapshotManager', "vmsnapshot.max", "10", "Maximum vm snapshots for a vm", NULL, NULL,NULL,0);
 
 UPDATE `cloud`.`configuration` SET `component` = 'VMSnapshotManager' WHERE `name` IN ("vmsnapshot.create.wait", "vmsnapshot.max");
+
+ALTER TABLE `cloud`.`external_load_balancer_devices` ADD COLUMN `is_exclusive_gslb_provider` int(1) unsigned NOT NULL DEFAULT 0 COMMENT '1 if load balancer appliance is acting exclusively as gslb service provider in the zone and can not be used for LB';