1-23To do... Use the command... RemarksEnter system view system-view —Configure the network diameterof the switched networkstp bridge-diameterbridgenumberRequiredThe default network diameter ofa network is 7.The network diameter parameter indicates the size of a network. The bigger the network diameter is,the larger the network size is.After you configure the network diameter of a switched network, an MSTP-enabled switch adjusts itshello time, forward delay, and max age settings accordingly to better values.The network diameter setting only applies to CIST; it is invalid for MSTIs.Configuration example# Configure the network diameter of the switched network to 6. system-view[Sysname] stp bridge-diameter 6Configuring the MSTP Time-related ParametersThree MSTP time-related parameters exist: forward delay, hello time, and max age. You can configurethe three parameters to control the process of spanning tree calculation.Configuration procedureFollow these steps to configure MSTP time-related parameters:To do... Use the command... RemarksEnter system view system-view —Configure the forward delayparameterstp timer forward-delaycentisecondsRequiredThe forward delay parameterdefaults to 1,500 centiseconds(namely, 15 seconds).Configure the hello timeparameter stp timer hello centisecondsRequiredThe hello time parameter defaults to200 centiseconds (namely, 2seconds).Configure the max ageparameterstp timer max-agecentisecondsRequiredThe max age parameter defaults to2,000 centiseconds (namely, 20seconds).All switches in a switched network adopt the three time-related parameters configured on the CIST rootbridge.
