Accton Technology CheetahSwitch Workgroup, 4508 manual Configuring Bridge STA, Priority 32,768

CheetahSwitch Workgroup-4508

Configuring Bridge STA

The following figure and table describe Bridge STA configuration.

CheetahSwitch Workgroup - 4508

Spanning Tree Configuration: Bridge STA Configuration

		Spanning Tree Protocol		: ENABLED
		Hello Time		: 2
		Max Age		: 6
		Priority		: 32768
		Forward Delay		: 4
	<APPLY>		<OK>	<CANCEL>
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Parameter		Default	Description
Spanning Tree Protocol		Enabled	Enable this parameter to participate in an STA-compliant network.
Hello Time		2	Time interval (in seconds) at which the root device transmits a
			configuration message.
			Minimum value: 1.
			Maximum value: lower of 10 or [(Max. Message Age / 2) -1].
Max (Message) Age		20	The maximum time (in seconds) a device can wait without
			receiving a configuration message before attempting to
			reconfigure. All device ports (except for designated ports) should
			receive configuration messages at regular intervals. Any port that
			ages out STA information (provided in the last configuration
			message) becomes the designated port for the attached LAN.
			If it is a root port, a new root port is selected from among the
			device ports attached to the network.
			The minimum value is the higher of 6 or [2 x (Hello Time + 1)].
			The maximum value is the lower of 40 or [2 x (Forward Delay - 1)].
Priority		32,768	Device priority is used in selecting the root device, root port, and
			designated port. The device with the highest priority becomes the
			STA root device. If all devices have the same priority, the device
			with the lowest MAC address will then become the root device.
			Enter a value from 0 - 65535.
			Remember that the lower the numeric value, the higher the priority.
Forward Delay		15	The maximum time (in seconds) the root device will wait before
			changing states (i.e., listening to learning to forwarding). This
			delay is required because every device must receive information
			about topology changes before it starts to forward frames. In
			addition, each port needs time to listen for conflicting information

that would make it return to a blocking state; otherwise, temporary data loops might result.

The maximum value is 30.

The minimum value is the higher of 4 or [(Max. Message Age / 2) + 1].

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