Zachary Loeber

I eat complexity and am never without a meal.

Big-IP F5 LTM Load Balancer Documentation Script with Powershell

Here is a script I whipped up to perform a report on your Big-IP LTM load balancers using powershell. The report currently includes the virtual servers, pools, and various bits of status information on both. Big-IP iControl modules are needed (for obvious reasons).

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BIG-IP: Quick Tip

They silently (well maybe not so silent as I didn’t check if it was announced) published an internal tool that the F5 support engineers use for troubleshooting Big-ip load balancer configuration dumps. With a login account you can access this tool at the aptly named URL of This has some really cool info that you might fine useful in resolving load balancer issues in your environment.

Big-IP: Custom IIS SOAP Monitor

In working on a production issue with my company’s flagship SaaS product I worked with some of the brilliant F5 engineers to isolate one web server in the load balanced pool which was intermittently failing. The F5 engineer recommended a health monitor that does more than just poll for a static page. He suggested we implement some kind of soap call to make the application pool do some work and return a result (I guess in case the IIS application pool is misbehaving but not down). So I worked with one of our developers to do just that but ran into some caveats which required yet another custom health monitor.

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