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Management Guide
3-15
Spanning Tree Configuration
The following figures and tables describe Bridge STA configuration.
Switch
Parameter Default Description
Usage Enabled Enable this parameter to participate in an STA compliant
network.
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. However, 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.
When the Switch Becomes Root
Parameter Default Description
Hello Time 2 The time interval (in seconds) at which the root device transmits
a configuration message.
The minimum value is 1. The maximum value is the 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)].