Operation Manual – MSTPH3C S3610&S5510 Series Ethernet Switches Chapter 1 MSTP Configuration1-25When a device becomes the root bridge of the CIST or MSTI of an MST region , themaximum hop in the configuration BPDUs generated by this device defines the networkdiameter of the spanning tree to define how far the spanning tree can reach in this MSTregion. All the devices other than the root bridge in the MST region use the maximumhop value set for the root bridge.I. Configuration procedureFollow these steps to configure the maximum number of hops of the MST region:To do... Use the command... RemarksEnter system view system-view —Configure the maximumhops of the MST region stp max-hops hops Optional20 by defaultNote:A larger maximum hops setting means a larger size of the MST region. Only themaximum hops configured on the regional root bridge can restrict the size of the MSTregion.II. Configuration example# Set the maximum hops of the MST region to 30. system-view[Sysname] stp max-hops 301.3.6 Configuring the Network Diameter of a Switched NetworkAny two stations in a switched network are interconnected through specific paths,which are composed of a series of devices. Represented by the number of devices on apath, the network diameter is the path that comprises more devices than any otheramong these paths.I. Configuration procedureFollow these steps to configure the network diameter of the switched network:To do... Use the command... RemarksEnter system view system-view —Configure the network diameterof the switched networkstp bridge-diameterbridge-numberOptional7 by default