User`s guide

AT-S29 Management Software User’s Guide
47
Parameter Description
Priority 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.
Hello Time The time interval (in seconds) at which the root
device transmits a configuration message.
Max Age The maximum time (in seconds) a device can wait
without receiving a configuration message
before attempting to reconfigure.
Forward Delay The maximum time (in seconds) the root device
will wait before changing states (i.e., listening to
learning to forwarding).
Hold Time The minimum interval between the transmission
of consecutive Configuration BPDUs.
Designated Root The priority and MAC address of the device in the
spanning tree that this switch has accepted as
the root device.
Root Cost The path cost from the root port on this switch to
the root device.
Root Port The number of the port on this switch that is
closest to the root. This switch communicates
with the root device through this port. If there is
no root port, then this switch has been accepted
as the root device of the spanning tree network.
Reconfig Counts The number of times the spanning tree has been
reconfigured.
Topology Up Time The time since the spanning tree was last
reconfigured.