Allied Telesis AT-S29 - Manual (Page 93)

AT-S29 Management Software User’s Guide
93
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)].
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].