ProSoft Technology RLXIB-IHN-W-E - Manual (Page 63)

RLXIB-IHN-WC ♦ 802.11n RadioLinx Configuration Manager
Weatherproof Industrial Hotspot User Manual
ProSoft Technology, Inc. Page 63 of 63
July 9, 2012
Parameter Description
RSTP Status Use the dropdown menu to enable or disable RSTP for this device.
Ethernet Edge Port Specify whether Ethernet port on the device is connected to another
RSTP enabled device. If yes, the edge port property is set to Disable.
Priority This is the priority component of the bridge identifier of this node. The
priority value should be a multiple of 4096.
Hello Time Hello time of the bridge represents the time interval between
transmissions of RSTP BPDUs. The value should be between 1 and 10
seconds, with 2 seconds as the default.
Max Age Max age is the upper limit on the number of hops the information in a
BPDU can traverse. This can be between 6 and 28 seconds, with 20
seconds as the default.
Forward Delay Forward delay is the time spent by a port in Learning state before
moving to the Forwarding state. This can be between 15 and 30
seconds, with 15 seconds as the default.
Cost for Ethernet
Interface Cost of using Ethernet interface on AP.
Cost for Radio Interface 1 Cost of using a radio interface 1 based connection.
Cost for Radio Interface 2 Cost of using a radio interface 2 based connection (if applicable).
Click
Apply to save your changes.
Click Clear to discard your changes.
Spanning Tree shuts off ports as necessary to prevent loops. If loops are created
in an Ethernet network, packets can be circulated endlessly, consuming all the
bandwidth and making the network unusable.
RSTP allows users to create truly redundant connections between any two points
in the network. The radios detect the redundant paths and keep one connection
alive for communications. If the primary connection fails for any reason, the
secondary connection is quickly transitioned to a state to forward packets,
allowing the network to adapt itself to handle problems without customer
intervention.
RSTP uses active communications between network devices to propagate
changes in the network and to cause transitions to occur much more quickly.
Because RSTP is an IEEE standard, IH radios work in conjunction with wired
Ethernet switches to form a redundant network.
Each RSTP device (RLXIB-IHN-W Radio or Ethernet switch) communicates with
other RSTP devices in the network via packets called Bridge Protocol Data Units
(BPDUs). BPDUs are sent out each of the devices ports. In a wired switch this
would be from each of the Ethernet ports. In an RLXIB-IHN-W Radio, in addition
to the Ethernet port, each wireless link is considered a port. These BPDUs are
the communications means to allow each RSTP device in the network to make
sure that the proper connections still exist.