Cisco LocalDirector
The LocalDirector was one of the first load balancers on the market, and despite of some features that other products have had for a few years now, they've enjoyed near fantatical support from many users.In 1996, Cisco purchased Network Translation, and their product was re-christened the LocalDirector.
Unfortunatly, other than the standard RFC1213-based bandwidth metrics for the system's network interfaces, I do not know of any other metrics that can be gathered from a LocalDirector. If you know of any additional objects, please submit them.