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32 VH-2402S User Interface VH-2402S
Parameter Default Description
Spanning Tree
Protocol
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.
Hello Time 2 Time interval (in seconds) at which the root device
transmits a configuration message.
The minimum value is1.
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)].
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].