Administrator Guide

NOTE: The hello time is encoded in BPDUs in increments of 1/256ths of a second. The standard minimum hello time in
seconds is 1 second, which is encoded as 256. Millisecond. hello times are encoded using values less than 256; the
millisecond hello time equals (x/1000)*256. When you configure millisecond hellos, the default hello interval of 2 seconds is
still used for edge ports; the millisecond hello interval is not used.
Rapid Spanning Tree Protocol (RSTP) 705