How to compute Web Dispatcher's Load Balancing

Hi Experts,

I have to decide the type of Load Balancing.

Sizing Guide suggests as follows,

but I can't understand how to comupute SAP System.

Could you tell me about them?

<Type>

  1.Client IP address-based

  2.Static round robin

  3.Weighted round robin

  4.Dynamic load balancing

Especially, I'd like to know about

"3.Weighted round robin" &

"4.Dynamic load balancing"

(interval, what factor decide system load)

And if it uses or can use the data/value of message server,

please tell me it.

Thank you for advance.

Best Regards,

Toshikazu