AirWorks AWK-3121 User’s Manual
Web Console Configuration
3-31
RSTP Settings
(for AP mode only)
AWK-3121 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-3121’s STP/RSTP feature is disabled by default. To be completely effective, you must
enable RSTP/STP on every AWK-3121 connected to your network. If AWK-3121 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-3121s 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-3121 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)