BayStack User Guide

Using the Console Interface
304376-B Rev 00
3-65
Table 3-25 describes the Spanning Tree Switch Settings parameters.
Table 3-25. Spanning Tree Switch Settings Parameters
Parameter Description
Bridge Priority
Indicates the management-assigned priority value of the bridge ID in hexadecimal
notation, which is the most significant byte of the bridge ID. The STA uses this parameter
to determine the root bridge (or designated bridge). For example, the bridge with the
lowest bridge ID becomes the root bridge, with Bridge Priority values compared first,
followed by the hardware addresses.
Default Value: 8000
Range: 0 to 65535
Designated
Root
Indicates the bridge ID of the root bridge, as determined by the STA.
Default Value: 8000 (bridge_id)
Range: 0 to 65535
Root Port
Indicates the switch port number that offers the lowest path cost to the root bridge.
Default Value: 0
Range: 0 to 16
Root Path Cost
Indicates the path cost from this switch port to the root bridge.
Default Value: 0
Range: Not applicable
Hello Time
Indicates the Actual Hello Interval, the amount of time between transmissions of
configuration Bridge Protocol Data Units (BPDUs) that the root bridge is currently using.
Note that all bridges participating in the spanning tree network use the root bridge’s Hello
Interval parameter value.
See also
Bridge Hello Time.
Default Value: 2 seconds
Range: 1 to 10 seconds
Maximum Age
Time
Indicates the Maximum Age Time parameter value that the root bridge is currently using.
This value specifies the maximum age that a Hello message can attain before it is
discarded.
Note that the root bridge’s Maximum Age Time parameter value becomes the actual
Maximum Age Time parameter value for all bridges participating in the spanning tree
network.
See also
Bridge Maximum Age Time.
Default Value: 20 seconds
Range: 6 to 40 seconds
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