Transition Networks | SISPM1040-182D |
6.19Rapid Spanning Tree
The Rapid Spanning Tree Protocol (RSTP) is an evolution of the Spanning Tree Protocol and provides for faster spanning tree convergence after a topology change. The system also supports STP and the system will auto-detect the connected device that is running STP or RSTP protocol.
6.19.1 RSTP System Configuration
The user can view spanning tree information of Root Bridge.
The user can modify RSTP state. After modification, click Apply 
.
¾RSTP mode: The user must enable the RSTP function first before configuring the related parameters.
¾Priority (0-61440):The switch with the lowest value has the highest priority and is selected as the root. If the value is changed, the user must reboot the switch. The value must be a multiple of 4096 according to the protocol standard rule.
¾Max Age (6-40):The number of seconds a switch waits without receiving Spanning-tree Protocol configuration messages before attempting a reconfiguration. Enter a value between 6 through 40.
¾Hello Time (1-10):The time that controls the switch to send out the BPDU packet to check RSTP current status. Enter a value between 1 through 10.
¾Forward Delay Time (4-30):The number of seconds a port waits before changing from its Rapid Spanning-Tree Protocol learning and listening states to the forwarding state. Enter a value between 4 through 30.
[NOTE] Follow the rule as below to configure the MAX Age, Hello Time, and Forward Delay Time.
2 x (Forward Delay Time value –1) > = Max Age value >= 2 x (Hello Time
value +1)
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