Advantech EKI-7657C user manual RSTP-System Configuration, RSTP-Port Configuration

RSTP—System Configuration

•The user can view spanning tree information of the 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 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.

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