Advantech EKI-7657C, User Manual

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EKI-7657C _Manual_ed1 72
RSTP—System Configuration
•
The user can view spanning tree information of the Root Bridge.
•
The user can modify RSTP state. After modification, click
Apply
.
¾
RSTP mode:
The user must enable the RSTP function first before configuring the related
parameters.
¾
Priority (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.
¾
Max 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.
¾
Hello 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.
¾
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)
Figure 3.40: RSTP System Configuration interface
RSTP—Port Configuration
Here you can configure the path cost and priority of each port.
•
Select the port in the port column field.
•
Path Cost:
The cost of the path to the other bridge from this transmitting bridge at the specified port.
Enter a number 1 through 200,000,000.
•
Priority:
Decide which port should be blocked by priority in LAN. Enter a number 0 through 240 (the
port of the highest value will be blocked). The value of priority must be the multiple of 16.