We are currently using a 1200 series access point in workgroup bridge mode, 1200 access points and a 2955 switch. All of our devices have the latest IOS. The 1200 workgroup bridge will be located in a slow moving machine(around 20 km/h)and we are trying to get it to switch seamlessly between access points. It currently takes a little less than a second to switch between access points, this is unfortunately too long for us. We're hoping to get at least 400ms. Does the 1200 series support mobile mode and what exactly does threshold and period do? Any advice anybody could give us on how to speed things up would be greatly appreciated.