Qtech QSW-8200-28T-AC — настройка команд MSTP: приоритеты и управление портами [17/23]

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User Manual

Chapter 1. Commands for MSTP 17

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1.1.27 spanning-tree port-priority

 Command: spanning-tree port-priority <port-priority>

 no spanning-tree port-priority

 Function: Set the port priority; the command “no spanning-tree port-priority” restores

the default setting.

 Parameter: <port-priority> sets port priority. The valid range is from 0 to 240. The

value should be the multiples of 16, such as 0, 16, 32, 48…240.

 Command mode: Port Mode

 Default: The default port priority is 32768.

 Usage Guide: By setting the port priority to designated port. The lower the value of the

port priority is, the higher the priority is.

 Example: Set the port priority as 4096 on the port 1.

 Switch(Config-If-Ethernet1/0/1)#spanning-tree port-priority 4096

1.1.28 spanning-tree priority

 Command: spanning-tree priority <bridge-priority>

 no spanning-tree priority

 Function: Configure the spanning-tree priority; the “no spanning-tree priority”

command restores the default priority.

 Parameter: <bridge-priority> is the priority of the bridging switch. Its value should be

round times of 4096 between 0 and 61440, such as 0, 4096, 8192… 61440.

 Command Mode: Global Mode.

 Default: Priority is 32768.

 Usage Guide: The bridge ID can be altered by changing the priority of the switch.

Further, the priority information can also be used for voting of the root bridge and the

specified ports. The bridge priority value of the switch is smaller, however the priority is

higher.

 Example: Configure the priority is 4096.

 Switch(config)#spanning-tree priority 4096

1.1.29 spanning-tree rootguard

 Command: spanning-tree rootguard

 no spanning-tree rootguard

 Function: Set the port is root port, “no spanning-tree rootguard” command sets the

port is non-root port.

 Parameter: None.

 Command mode: Port Mode.

 Default: Port is non-root port.

 Usage Guide: The command is used in Port Mode, if the port is configured to be a

rootguand port, it is forbidden to be a MSTP root port. If superior BPDU packet is