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Configuring Spanning Tree MSTP Configurations
User Guide 417
â– Configuring Parameters on Ports in the Instance
Choose the menu L2 FEATURES > Spanning Tree > MSTP Instance > Instance Port
Config to load the following page.
Figure 3-5 Configuring Port Parameters in the Instance
Follow these steps to configure port parameters in the instance:
1) In the Instance Port Config section, select the desired instance ID.
Instance ID Select the ID number of the instance that you want to configure.
2) Configure port parameters in the desired instance.
UNIT Select the desired unit or LAGs for configuration.
Priority Specify the Priority for the port in the corresponding instance. The value
should be an integral multiple of 16, ranging from 0 to 240.
The port with lower value has the higher priority. When the root path of the
port is the same as other ports’, the switch will compare the port priorities
between these ports and select a root port with the highest priority.
Path Cost Enter the value of the path cost in the corresponding instance. The valid
values are from 0 to 2000000. The default setting is Auto, which means the
port calculates the external path cost automatically according to the port’s
link speed. The port with the lowest root path cost will be elected as the root
port of the switch.
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