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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
1. User can view spanning tree information about the Root Bridge.
2. User can modify RSTP state. After modification,
save
the configuration.
1.
RSTP mode:
user must enable or disable RSTP function before configure the
related parameters.
2. Priority
(0-61440):
a value used to identify the root bridge. The bridge with the
lowest value has the highest priority and is selected as the root. If user changes the
value, user must reboot the switch assigned path priority number. The value must
be a multiple of 4096 according to the protocol standard rule.
3.
Max Age (6-40):
the number of seconds a bridge waits without receiving
Spanning-tree Protocol configuration messages before attempting a reconfiguration.
Enter a value between 6 through 40.
4. Hello Time (1-10):
the time that controls switch sends out the BPDU packet to
check RSTP current status. Enter a value between 1 through 10.
5. Forward 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 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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