ProSoft Technology RLX2-IHA User Manual page 89

RLX2-IHx series ♦ 802.11a, b, g, n
Industrial Hotspots
In applications where the mobile platform is traveling a known path, it is
necessary to have an unambiguous option when it reaches a roam point. If
multiple Parent radios are in range at the roam point, the radio may choose to
roam to the wrong Parent radio.
The Repeater radio uses the R
for every roam. Due to topology variances, there may be one or two coverage
areas that would operate better with different settings for these roam parameters.
The following settings allow for Parent Assisted roaming by advertising these
parameter values to any Child Repeater radio that associates to this unit. You
can enable each parameter separately. Only enabled parameters are advertised
to Child Repeater radios.
Parameter Description
None Select this check box to negate all other parameters so that no roam parameters are
advertised to Child Repeater radios.
Next Parent Select this check box to advertise the unit that a Child Repeater radio should roam to
next. The Radio Configuration / Diagnostic Utility automatically populates the
parameter with all the RLX2-IHx series units with the same SSID that are on the same
Ethernet network as a unit.
Each entry is represented by the Name of the RLX2-IHx series radio, so it is important
that you give each radio a unique name. If the desired next Parent radio has not been
detected because it is not currently powered up or attached to the network, it does not
appear in the list. In this case, you can manually enter its MAC Address into the
parameter. Once saved, this MAC Address appears in the select box until that unit is
detected on the Ethernet, at which time the radio's name replaces the MAC Address.
When an advertised N
Child Repeater radio roams to the Next Parent radio when the Next Parent radio's cost
is lower than its current Parent radio. When the advertised Next Parent rado is on a
different channel, then the radio uses the R
decision.
Select this check box to advertise the R
Roam
Threshold uses. This Roam Threshold overrides the Child Repeater radio's equivalent setting,
but only while the Child Repeater radio is associated to this unit. If the Parent radio is
not advertising a Roam Threshold, then the Child Repeater radio reverts to using its
own value configured on the P
Utility for the Child Repeater radio.
This parameter is critical when a Next Parent is also being advertised and that Parent
is configured to be on a different channel than this unit. The Child Repeater uses this
threshold to determine when to switch to the Next Parent's channel and associate with
it. You must ensure that at a point where the current Parent's RSSI goes below the
threshold, the Next Parent is in range. Otherwise, the roam fails.
The main point to remember is that a Child Repeater does not roam while its current
Parent's RSSI is higher than the current Roam Threshold value. In the case where a
Next Parent radio is not being advertised or the Next Parent radio is on the same
channel, then the cost comparison to determine when to roam only occurs when the
current Parent's RSSI is below the Roam Threshold. This allows the roam point to be
controlled when a mobile platform travels a known path.
Parent Select this check box to advertise the P
uses. This Parent Margin overrides the Child Repeater radio's equivalent setting, but
Margin
only while the Child Repeater radio is associated to this unit. If the Parent radio is not
advertising a Parent Margin, the Child Repeater radio reverts to using its own
configured value. See Configuring Parent Link Settings (page 94).
ProSoft Technology, Inc.
October 30, 2017
T and P
OAM HRESHOLD
P radio is on the same channel as the current unit, the
EXT ARENT
T
OAM
T
OAM HRESHOLD
L tab of the Radio Configuration / Diagnostic
ARENT INK
M
ARENT
Configuring a Radio - Detailed Configuration
M parameters
ARENT ARGIN
to make the roam
HRESHOLD
that a Child Repeater radio
that a Child Repeater radio
ARGIN
User Manual
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