Implementation of Windows Server 2003 load Balancing

The advantages of Network Load Balancing

1. Network Load Balancing allows you to propagate incoming requests to up to 32 servers, where you can use up to 32 servers to share external network request services. Network Load Balancing technology ensures that they can respond quickly even in heavy loads.

2. Network Load Balancing external only need to provide an IP address (or domain name).

3. Services are not interrupted if one or more of the servers in the Network Load Balancing are unavailable. Network Load Balancing automatically detects that the server is unavailable and can quickly reassign client traffic to the remaining servers. This protection will help you provide uninterrupted service for your critical business processes. You can increase the number of Network Load Balancing servers based on increased network traffic.

4. Network Load Balancing can be implemented on a regular computer.

In Windows Server 2003, Network Load Balancing applications include Internet Information Services (IIS), ISA Server 2000 firewall and proxy servers, VPN virtual private networks, terminal servers, Windows Media Services (Windows video-on-demand, video broadcast), and so on. At the same time, Network Load Balancing can help improve your server performance and scalability to meet the growing demand for internet-based clients.

Network Load Balancing allows clients to access the cluster with a logical Internet name and virtual IP address (also known as a cluster IP address), while retaining the respective names of each computer.

Two: The realization process of Network Load Balancing

Below, we will introduce the implementation and application of Network Load Balancing on two common computers with Windows Server 2003 installed.

In both computers, one computer name is W2003-1,ip address 202.206.197.190, and the other is named W2003-2,ip address 202.206.197.191.

The planning Network Load Balancing cluster uses an IP address of 202.206.197.195, and the complete computer name for the planning Network Load Balancing cluster is cluster.heinfo.edu.cn. You need to register this host name in the heinfo.edu.cn domain and set the address to 202.206.197.195. If you do not have DNS, you can add a message by editing the Hosts file in the%SYSTEMROOT%SYSTEM32DRIVERSETC directory on clients that need access to Network Load Balancing (including Network Load Balancing hosts) 202.206.197.195 Cluster.heinfo.edu.cn ", you can resolve the problem of DNS domain name resolution.

When formally applied, The client only needs to use cluster.heinfo.edu.cn or IP address 202.206 197.195来 to access the server, and the network service balance automatically chooses 202.206.197.190 or 202.206.197.191 to provide services based on the load of each server.

The implementation process of Network Load Balancing is as follows:

On each computer that implements Network Load balancing, you can only install the TCP/IP protocol, do not install any other protocols (such as the IPX protocol or the NetBEUI Protocol), and Network Load Balancing cannot be selected in Network properties, which can be viewed from Network connection properties.

① first into the computer, log on as an administrator, run Network Load Balancing Manager from Administrative Tools, right-click Network Load Balancing clusters, select New cluster from the menu that appears, and go to the cluster parameters interface (Figure 1).

After IP address, enter the planned cluster parameter address 202.206.197.195, use the default value at the subnet mask, and in the full Internet name Enter cluster.heinfo.edu.cn (or other name, but the DNS name entered must match the IP address you entered).

If remote control is allowed, check "Allow remote control" and enter a password that can be remotely controlled under Remote password and Confirm password

② Click the "Next" button, enter the cluster IP Address page and then enter the "port rules" interface, click the "Next" button to enter the "Connection" interface (Figure 2).

③ Enter the name of the current computer in the Host column of the connection interface w2003-1, and then click the Connect button to display the network card and IP address of the connected computer in the Configure a new cluster available interface box. Select the address of the same network segment as the cluster IP address (for external network applications), then click the "Next" button, enter the setting "Host Parameters" interface, click the "Finish" button, the system will automatically start the Network Load Balancing cluster configuration. After a few minutes, the Network Load Balancing cluster configuration completes.

④ opens the second computer and logs in as administrator.

Note: On each node in Network Load Balancing, the username and password of the Administrator account are best consistent.