The following tables shows some of the rates used on a regular basis with 2.4 Ghz links and their bandwidth usage. If you're running 900 Mhz or 5 Ghz backhaul links with dual-radio nodes, you will typically want to set the max wireless client bandwidth to around 6 Mb/s rather than around 2-3 for 2.4 Ghz, and the maximum system bandwidth to 20 Mbs rather thn 10 Mbs..

You can use the program qlink_test from a SSH terminal to determine the speed of your connection between nodes. If you use "qlink_test 1.x.x.x " you will see the max tcp/ip speed between the node you're in, and the one you've specified. If you use "qlink_test 172.x.x.x" you will see the speed available through the client tunnel, which is generally equivalent to the speed your customer will experience. These numbers include the TCP/IP protocol overhead.  Actual customer bandwidth will be between 5-10% less than these values.

Actual bandwidth performances also depends upon many variables including not only your system shaping settings but also the radio link quality and other user load on the system.