Operation Manual – MSTPH3C S5600 Series Ethernet Switches Chapter 1 MSTP Configuration1-30II. Configuration example# Configure the forward delay parameter to be 1,600 centiseconds, the hello timeparameter to be 300 centiseconds, and the max age parameter to be 2,100centiseconds (assuming that the current switch operates as the CIST root bridge). system-view[Sysname] stp timer forward-delay 1600[Sysname] stp timer hello 300[Sysname] stp timer max-age 21001.3.10 Configuring the Timeout Time FactorWhen the network topology is stable, a non-root-bridge switch regularly forwardsBPDUs received from the root bridge to its neighboring devices at the interval specifiedby the hello time parameter to check for link failures. Normally, a switch regards itsupstream switch faulty if the former does not receive any BPDU from the latter in aperiod three times of the hello time and then initiates the spanning tree recalculationprocess.Spanning trees may be recalculated even in a steady network if an upstream switchcontinues to be busy. You can configure the timeout time factor to a larger number toavoid such cases. Normally, the timeout time can be four or more times of the hello time.For a steady network, the timeout time can be five to seven times of the hello time.I. Configuration procedureFollow these steps to configure the timeout time factor:To do... Use the command... RemarksEnter system view system-view —Configure the timeouttime factor for the switch stp timer-factor numberRequiredThe timeout time factordefaults to 3.For a steady network, the timeout time can be five to seven times of the hello time.II. Configuration example# Configure the timeout time factor to be 6. system-view[Sysname] stp timer-factor 61.3.11 Configuring the Maximum Transmitting Rate on the Current PortThe maximum transmitting rate of a port specifies the maximum number ofconfiguration BPDUs a port can transmit in a period specified by the hello time
