AirWorks AWK-4121 User’s Manual
Web Console Configuration
RSTP Settings
(for AP mode only)
AWK-4121 supports IEEE802.1D Spanning Tree Protocol and IEEE802.1w Rapid STP standards.
In addition to eliminating unexpected path looping, STP/RSTP can provide a backup path recovery
if a wired/ wireless path fails accidentally. The reliability and availability can increase because this
fail-over function.
AWK-4121’s STP/RSTP feature is disabled by default. To be completely effective, you must
enable RSTP/STP on every AWK-4121 connected to your network. If AWK-4121 plays a
Client
role, which is connected to a device (PLC, RTU, etc.) as opposed to network switch equipment, it
is not necessary to enable STP/RSTP. The reason is that it will cause unnecessary negotiation.
AWK-4121s support STP/RSTP in
AP
mode (including WDS) only.
The following figures indicate which Spanning Tree Protocol parameters can be configured. A
more detailed explanation of each parameter is given below the figure.
RSTP status
This field will appear only when selected to operate STP/RSTP. It indicates whether this
AWK-4121 is the Root of the Spanning Tree (the root is determined automatically) or not.
Bridge priority
Setting
Description
Factory Default
Numerical value
selected
by user
You can increase the bridge priority
by selecting a lower number. A
higher bridge priority brings a greater
chance of being established as the
root of the Spanning Tree topology.
32768
Hello time
Setting
Description
Factory Default
Numerical value input
by user
(1 – 10 seconds)
The root of the Spanning Tree
topology periodically sends out a
“hello” message to other devices on
the network to check if the topology
is healthy.
Hello time
indicates how
often the root sends hello messages.
2 (seconds)
3-27
