Configuring a loopback adapter for load balancing in a Conference Manager clusterAdded by IBM on November 23, 2011 | Version 1 (Original)
|When you deploy IBM® Load Balancer in front of two or IBM WebSphere® proxy servers, client requests are directed to Load Balancer using its cluster IP address. Each of the proxy servers must have a loopback address using the same IP address, so they can accept unmodified packets from the Load Balancer server.
When you deploy IBM
® Load Balancer in front of two or IBM WebSphere
® proxy servers, client requests are directed to Load Balancer using its cluster IP address. Each of the proxy servers must have a loopback address using the same IP address, so they can accept unmodified packets from the Load Balancer server.
About this task
Configure the loopback adapter on every WebSphere proxy server used with the cluster. For more information, see Configuring the server machines
in the WebSphere
Application Server Edge Components version 7 information center's Load Balancer documentation.
For example, the following instructions explain how to configure a loopback adapter in Microsoft
™ 2003 (the user interface may vary depending on your operating system).
Parent topic: Configuring WebSphere proxy server for load balancing in a Conference Manager cluster
Next topic: Creating SIP ports for load balancing in a Conference Manager cluster
- On the computer hosting the proxy server, add the Microsoft Loopback Adapter driver as follows:
- Click Start -> Control Panel.
- In the Control Panel, click Add Hardware.
- On the Welcome to the Hardware Wizard screen, click Next.
- Click Yes, I have already connected the hardware, and then click Next.
- In the list of "Installed hardware", select Add a new hardware device (at the bottom of the list) and then click Next.
Note: If "Microsoft Loopback Adapter" appears in the list, it is already installed: click Cancel and skip to step 2.
- On the What do you want the wizard to do? screen, select Install the hardware that I manually select from a list (Advanced) and then click Next.
- In the "Common hardware types" list, select Network adapters and click Next.
- On the Select Network Adapter screen, do the following:
- In the "Manufacturer" list, select Microsoft.
- In the Network Adapter list, select Microsoft Loopback Adapter.
- Click Next.
- On the The wizard is ready to install your hardware screen, click Next.
- When the installation is complete, click Finish to exit the wizard.
- Configure the loopback adapter settings:
- Click Start -> Control Panel -> Network Connections.
- In the Network Connections window, right-click the connection with the Device Name Microsoft Loopback Adapter, and then click Properties.
- In the Properties dialog box, click Internet Protocol (TCP/IP), and then click the Properties button.
- In the Internet Protocol (TCP/IP) Properties dialog box, do the following:
- Click Use the following IP address and provide the following values:
IP address: type the Load Balancer's cluster IP address.
Subnet mask: type the subnet mask of the Load Balancer server.
- Click Use the following DNS server addresses and provide the following value:
Preferred DNS server: type the localhost IP address.
- Click OK to close the "Internet Protocol (TCP/IP) Properties" dialog box.
Note: Do not provide a default gateway address.
- Click OK to close the "Properties" dialog box.
- Configure advanced connection settings:
- Back in the Network Connections window, click Advanced -> Advanced Settings.
- In the Advanced Settings dialog box, verify that the cluster IP address appears first in the list within the Connections field (re-order the list as needed).
- Click OK to close the Advanced Settings" dialog box.
- Close the Network Connections window.
- Close the Control Panel.
- Restart the WebSphere proxy server.
- Repeat this task for every WebSphere proxy server used by the cluster.