HP 6125XLG R2306-HP 6125XLG Blade Switch Layer 2 - LAN Switching Command Refer - Page 141

Usage guidelines The forward delay timer determines the time interval of state transition. To prevent temporary loops, a spanning tree port goes through the learning (intermediate) state before it transits from the discarding state to the forwarding state. To stay synchronized with the remote device, the port has a wait period between transition states that is determined by the forward delay timer. HP recommends not setting the forward delay with this command. Instead, you can specify the network diameter of the switched network by using the stp bridge-diameter command and let the spanning tree protocols automatically calculate the optimal settings for the forward delay timer. If the network diameter uses the default value, the forward delay timer also uses the default value. Examples # In MSTP mode, set the forward delay timer to 2000 centiseconds. system-view [Sysname] stp timer forward-delay 2000 Related commands • stp bridge-diameter • stp timer hello • stp timer max-age stp timer hello Use stp timer hello to set the hello time of the device. Use undo stp timer hello to restore the default. Syntax stp timer hello time undo stp timer hello Default The hello time is 200 centiseconds. Views System view Predefined user roles network-admin Parameters time: Sets the hello time in centiseconds, in the range of 100 to 1000 in increments of 100 (as in 100, 200, 300). Usage guidelines Hello time is the time interval at which spanning tree devices send configuration BPDUs to maintain the spanning tree. If a device fails to receive configuration BPDUs within the set period of time, a new spanning tree calculation process is triggered due to timeout. HP recommends not setting the hello time with this command. Instead, you can specify the network diameter of the switched network by using the stp bridge-diameter command and let the spanning tree 134