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Realization of Network Load Balancing in Windows 2003 System



In many current network applications sometimes a server cannot meet the requirements of the client. At this time the problem can only be solved by adding servers.

So is there a way or technology to solve this kind of problem? Use the network load balancing cluster in Windows 2000 or Windows Server 2003 (this article will introduce the network load balancing technology in Windows Server 2003的 implementation method).

  1. Advantages of network load balancing

  1. Network load balancing allows you to spread incoming requests to up to 32 servers that is you can use up to 32 servers Share the external network request service together. Network load balancing technology ensures that they can respond quickly even under heavy loads.

2. Network load balancing only needs to provide an IP address (or domain name) to the outside.

  3. If one or several servers in network load balancing are unavailable the service will not be interrupted. When network load balancing automatically detects that the server is unavailable it can quickly reassign client communications among the remaining servers. This protection measure can help you provide uninterrupted services for critical business processes. The number of network load balancing servers can be increased according to the increase in network traffic.

  4. Network load balancing can be implemented on ordinary computers.

  In Windows Server 2003 network load balancing applications include Internet Information Services (IIS) ISA and Server 2000 firewall and proxy server VPN virtual private network terminal server Windows Media Services (Windows video on demand) Video broadcasting) and other services. At the same time network load balancing helps to improve your server performance and scalability to meet the growing demand for Internet-based clients.

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

Next we will introduce the implementation and application of network load balancing on two ordinary computers with Windows Server 2003 installed. 2. Realization of Network Load Balancing

Among the two computers one computer is named w2003-1 and its IP address is and the other is named w2003-2 and its IP address is 202.206. 197.191.

The IP address used by the planned network load balancing cluster is and the complete computer name of the planned network load balancing cluster is You need to be in the domain Register this host name in and set the address to If you don’t have DNS you can edit the %systemroot%\u0026quot;system32\u0026quot;drivers\u0026quot; etc directory on the clients that need to access network load balancing (including network load balancing hosts) Add a piece of information '' to the hosts file of. The problem of DNS domain name resolution can be solved.

When it is officially used the client only needs to use or IP address to access the server and the network service balance will automatically select according to the load of each server. Or to provide external services.

The implementation process of network load balancing is as follows:

  On each computer that realizes network load balancing only TCP/IP protocol can be installed and no other protocols (such as IPX protocol or NetBEUI protocol) in the network properties 'Network Load Balancing' cannot be selected either. This can be viewed from the 'Network Connection Properties'.

  ①First enter the first computer log in as an administrator run the 'Network Load Balancing Manager' from the 'Administrative Tools' and right-click the 'Network Load Balancing' Cluster\u0026rdquo; select \u0026ldquo;New Cluster\u0026rdquo; from the menu that appears enter the\u0026ldquo;Cluster Parameters\u0026rdquo; interface.

enter the planned cluster parameter address after the “IP address” use the default value at the subnet mask and enter after the “full Internet name” .cn (other names can also be used but the entered DNS name must match the entered IP address).

If remote control is allowed please select 'Allow remote control' and enter the password for remote control in 'Remote Password' and 'Confirm Password'.

  ②Click the \u0026ldquo;Next\u0026rdquo; button to enter the cluster IP address page and then enter the \u0026ldquo;Port Rules\u0026rdquo; interface click the \u0026ldquo;Next\u0026rdquo; button to enter the \u0026ldquo;Connect\u0026rdquo; interface.

  ③Enter the name of the current computer w2003-1 in the \u0026ldquo;Host\u0026rdquo; column of the \u0026ldquo;Connect\u0026rdquo; interface and then click the \u0026ldquo;Connect\u0026rdquo; button to configure a new one in the \u0026ldquo; The available interfaces of the cluster\u0026rdquo; box shows the network card and IP address of the connected computer. Select the address in the same network segment as the cluster IP address (the network card used to provide network applications to the outside world) and then click the 'Next' button to enter the Settings 'Host Parameters' interface click the 'Finish' button and the system The configuration of the network load balancing cluster will start automatically. After a few minutes the network load balancing cluster configuration is complete.

  ④Turn on the second computer and log in as an administrator.

Note: On each node in the network load balancing the username and password of the administrator account should be the same.

  ⑤ Then on the first computer right-click the newly created cluster and select 'Add host to the cluster' from the menu that appears. The \u0026ldquo;connection\u0026rdquo; interface will appear enter the computer name of the second computer in \u0026ldquo;host\u0026rdquo; click on the \u0026ldquo;connect\u0026rdquo; button and the connection will be displayed under \u0026ldquo;interfaces available to the configuration cluster\u0026rdquo; Network configuration on your computer. Select the network card of enter the host parameter interface and click the \u0026ldquo;Finish\u0026rdquo; button to return to the network load balance manager.

  ⑥ Turn off the network load balance manager and then enter the network load balance manager. Right-click the 'Network Load Balancing Cluster' and select 'Connect to an existing' from the menu that appears and the 'Connect' interface will pop up.

  Enter the name of the first computer click the \u0026ldquo;Connect\u0026rdquo; button the cluster’s IP address will be listed under \u0026ldquo;Cluster\u0026rdquo; select this IP address and click\u0026ldquo;Finish\u0026rdquo; Button to complete the connection to the cluster.

After if these two servers cannot meet the requirements you can add the third and fourth computers to the network load balancing to meet the requirements according to the above steps.

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