Load balancer windows server

Provides Network Load Balancing Tools to configure and manage multiple clusters and all of the hosts from a single remote or local computer.

Enables clients to access the cluster by using a single, logical Internet name and virtual IP address, which is known as the cluster IP address it retains individual names for each computer. NLB allows multiple virtual IP addresses for multihomed servers.

Enables NLB to be bound to multiple network adapters, which enables you to configure multiple independent clusters on each host. Support for multiple network adapters differs from virtual clusters in that virtual clusters allow you to configure multiple clusters on a single network adapter. Can be configured to automatically add a host to the cluster if that cluster host fails and is subsequently brought back online. The added host can start handling new server requests from clients.

Enables you to take computers offline for preventive maintenance without disturbing the cluster operations on the other hosts. There is no restriction on the number of network adapters on each host, and different hosts can have a different number of adapters. Within each cluster, all network adapters must be either multicast or unicast.

NLB does not support a mixed environment of multicast and unicast within a single cluster. If you use the unicast mode, the network adapter that is used to handle client-to-cluster traffic must support changing its media access control MAC address. Do not add any other protocols for example, IPX to this adapter. When you complete the wizard, NLB is installed, and you do not need to restart the computer.

For more information, see Install-WindowsFeature. Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode. Enter each cmdlet on a single line, even though they may appear word-wrapped across several lines here because of formatting constraints.

It is recommended to not include changes to load-balancer settings with changes to any other settings, if you are using staging GPOs. Any changes to load-balancer settings must be applied first and then other configuration changes should be made. Also, after configuring load-balancer on a new DirectAccess server, please allow some time for the IP changes to be applied and replicated across the DNS servers in the enterprise, before you change other DirectAccess settings related to the new cluster.

Membership in the local Administrators group, or equivalent, is the minimum required to complete this procedure. PFX , and then click Next.

On the Security page, select the Password check box, enter a password in the Password box and confirm the password, and then click Next.

On the File to Export page, enter a name for the certificate file and save it to the desktop, and then click Next. Right click the Certificates node, point to All Tasks , and then click Import.

On the File to Import page, click Browse to locate the certificate. Select the certificate and then click Next. On the Private key protection page, in the Password box, type the password, and then click Next. On the Request Certificates page, click the Web Server certificate template, and then click More information is required to enroll for this certificate.

If the Web Server certificate template does not appear, ensure that the Remote Access server computer account has enroll permissions for the Web Server certificate template. In Value , type the fully qualified domain name FQDN for the intranet name of the network location server website for example, nls. Click OK , click Enroll , and then click Finish. Steps 12 and 13 are optional, but make it easier for you to select the certificate for network location when configuring Remote Access.

If you are deploying a topology with two network adapters, in External adapter , select the adapter that is connected to the external network. In Internal adapter , select the adapter that is connected to the internal network. If you are deploying a topology with one network adapter, in Network adapter , select the adapter that is connected to the internal network.

On the Network Location Server page, click Browse to select the certificate for the network location server website running on the Remote Access server, and then click Next. The Network Location Server page appears only when the network location server website is running on the Remote Access server. If VPN has not been enabled in a load balanced cluster, you should not provide any VPN address ranges when adding a new server to the cluster using Windows PowerShell cmdlets.

If you have done so by mistake, remove the server from the cluster, and add it again to the cluster without specifying the VPN address ranges.

Do this step using Windows PowerShell. Note that you can add multiple IPs for load balancing, but the first one will be considered the primary address. For testing purposes I will add a random IP address:. The next section is used to configure cluster parameters.

Enter the cluster full internet name in my example cluster1. A NLB cluster must operate in one of the following modes:. Unicast — the MAC address of the cluster virtual network adapter is shared with all cluster nodes. By using only one network adapter on each server, communication will be made only with devices that are part of the same subnet as the given node.

All devices from all subnets can communicate with the node, but multicasting is used for cluster communication. From the three available options, choose multicast and proceed with the next section:. From the port rules section we configure how traffic is managed on the NLB cluster. By specifying the designated port or port range you filter packets so that only desired traffic is received by the NLB cluster:. There are three available filtering methods, as follows:.

Multiple host — used to configure all nodes within the NLB cluster to respond to requests. There are three options available here:. This is used when stateful connections are used and is the default option. The timeout parameter is configured to discard connections once a connection passes a certain period of time. Just like netmask ordering, requests are sent to the appropriate node based on the subnet of the client. Single host — in this mode the traffic that matches a filtering rule will be handled by one node only.

Disable this port range — this mode is used to block the traffic sent on the specified ports. The newly created node will appear in the NLB Manager console. We will add the second server by right clicking the cluster and selecting Add Host to Cluster:.