Milan Technology MIL-SM2401MAF , You can view spanning tree information about the Root Bridge on the left.

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System Configuration
You can configure the STP system parameter after enable the STP function. You can
view spanning tree information about the Root Bridge on the left.
1. Select <Edit>
2. Priority (0~65535): assign path priority number.
3. Max Age (6~40): the maximum path age
4. Hello Time (1~10): the time that controls switch sends out the BPDU packet to check
STP current status.
5. Forward Delay Time (4~30): forward delay time.
6. Select <Apply>.
STP System Configuration interface
Per Port Setting
1. Select <Edit>.
2. Path Cost: specifies the path cost of the port that switch uses to determine which
port are the forwarding ports.
3. Priority: This is mean port priority; you can make it more or less likely to become the