Moxa Technologies EtherDevice User Manual page 67

Spanning Tree Protocol—Configuration Items
Spanning Tree Protocol (IEEE 802.1D)
Configuration Item
Indicates if this device is or is not the Root of
Root/Not Root the Spanning Tree (the root is determined
automatically).
Increase this device's bridge priority by
inputting a lower number. A device with a
Bridge priority higher bridge priority has a greater chance of
being established as the root of the Spanning
Tree topology.
The root of the Spanning Tree topology
periodically sends out a "hello" message to
other devices on the network to check if the
Hello time (sec.) topology is healthy. The "hello time" is the
amount of time the root waits between
sending hello messages (see below for further
explanation).
If this device is not the root, and it has not
received a hello message from the root in an
amount of time equal to "Max. Age," then
this device will reconfigure itself as a root.
Max. Age (sec.)
Once two or more devices on the network are
recognized as a root, the devices will
renegotiate to set up a new Spanning Tree
topology (see below for further explanation).
The amount of time this device waits before
Forwarding delay checking to see if it should change to a
(sec.) different state (see below for further
explanation).
MOXA EtherDevice Server User's Manual 3-39
Featured Functions
Description