RLX2 Series ♦802.11a, b, g, n Detailed Radio Configuration / Diagnostics
Industrial Hotspots User Manual
ProSoft Technology, Inc. Page 71 of 161
May 8, 2013
6.2.4 Spanning Tree Settings
Spanning Tree is enabled when this box is checked. Without spanning
tree, redundant connections might exist if multiple radio links are
created in parallel with each other. Redundant connections are
blocked only if spanning tree is enabled. Additionally, spanning tree is
used to flush the Ethernet switch table when the network topology
changes as described in the section on Automatic Parent Selection.
The default setting for Enable Spanning Tree is disabled. Note that
many network switches implement spanning tree functionality
themselves, which if enabled, will cause conflicts if Spanning Tree is
also enables in the radio. Check the documentation and settings for
the wired network equipment before enabling Spanning Tree in the
radios.
Because RSTP is an active protocol, it depends on communication
betweenRSTPdevices.IfnoRSTPdeviceisconnectedtotheradio’s
Ethernet port, the handshake cannot take place. In this case RSTP
reverts to STP. This means that the Ethernet port will be forced to
adhere to the timer based transition protocol of STP.
Therefore on network transitions and power up, communications will
not be allowed over the Ethernet port for 30 to 45 seconds. This
setting is an indication that no redundant connections exist out this
port and communication can immediately be allowed. If for some
reason a BPDU is received on this port, the RSTP protocol will
negotiate properly and handle any possible redundant paths.
The recommended setting for Ethernet Edge Port is "Enabled".
Configures the timing intervals to use.
Determines who should be the root of the RSTP. The RSTP device
with the lowest priority becomes the root. The accepted standard value
for this is 32768. If wired switches exist in the network that support
RSTP, they should always be allowed to be the root.
Set this value to 32769 to prevent the radio from being the root over a
wired switch. Use this setting when a radio is configured to be a
Master.
Set this value to 32770 when the radio is configured to be a Repeater.
In this way, if only RLX2 radios exist in the network, the Master radio
will become the root.
Rate at which BPDUs are sent out. The industry standard is 2
seconds.
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