82
Rapid 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.
RSTP - System Configuration
The user can view spanning tree information of Root Bridge.
The user can modify RSTP state. After modification, click
Apply
button.
RSTP mode:
The user must enable the RSTP function first before configuring
the related parameters.
Priority (0-61440):
The switch w ith t he lowest value has t he hi ghest pr iority
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.
Max Age (6-40):
The num ber o f s econds a switch waits without r eceiving
Spanning-tree P rotocol c onfiguration m essages be fore a ttempting a
reconfiguration. Enter a value between 6 through 40.
Hello Time (1-10):
The t ime t hat c ontrols the switch to send out t he B PDU
packet to check RSTP current status. Enter a value between 1 through 10.
Forward Delay Time (4-30):
The number o f s econds a por t waits bef ore
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)
