Third-Party Monitoring Programs Monitor Applications and Ports

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This article was previously published under Q233178

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SUMMARY

This article discusses some third-party monitoring tools you can use to monitor applications and ports.

Windows NT Load Balancing Service (WLBS) monitors cluster integrity using the periodic exchange of heartbeats between cluster members. Heartbeat exchange ensures the server is available on the network, but does not include any checking at the port or application level.

You can use third-party monitoring tools to control cluster membership based on content availability. Some tools allow a command to be executed after detecting an application failure at a server. For example, if an application being load balanced on a server fails, the monitoring tool could execute the following command

wlbs stop IPaddress:HostID

where IPaddress is the IP address for that cluster and HostID is the host ID or dedicated IP address of that server.

For information about the command line syntax, type wlbs at an MS-DOS prompt.

Some examples of third-party tools that monitor cluster membership are listed in the following table.

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Program	Web Address
Freshwater Software SiteScope	http://www.freshwatersoftware.com/ (http://www.freshwatersoftware.com/)
NetIQ AppManager	http://www.netiq.com (http://www.netiq.com)
Ipswitch WhatsUp Gold	http://www.ipswitch.com (http://www.ipswitch.com)