Network Diameter

Extreme Networks switching devices support a default 20‐bridge span from and including the root bridge. You can configure support for a maximum span of up to 40 bridges from the Spanning Tree root in the Common Spanning Tree (CST) or the Common and Internal Spanning Tree (CIST) regional root within an MST region. Max age defines the diameter for the CST and Maxhops defines the diameter within a region. See Defining the Maximum Age Time.