Just wondering what the reason for this is. Why not just set the 1 Mbps rate as mandatory, and the rest of the 802.11b rates (2, 5.5, 11) as supported?
Is there a benefit for setting multiple rates as mandatory instead of just the lowest rate? I am thinking of getting rid of all 802.11b rates to increase throughput since we don't have any 802.11b clients.
Correct. Probably the main reason why it's set different by default, compatibility to legacy clients. Out of the box, many settings on the WLC are set for compatibility and not performance. This is somewhat different on Mobility Express though, there the defaults (and recommendations) are set for much higher speeds with less legacy support.