Intermec WA21 System Manual page 143

MobileLAN access WA2X System Manual
Global Flooding Parameter Descriptions (continued)
Parameter
Multicast Outbound
to Secondary LANs
Allow Multicast
Outbound to
Terminals
Unicast Flooding
Unicast Outbound to
Secondary LANs
Allow Unicast
Outbound to
Terminals
Enable ARP Flooding
Chapter 5 — Configuring the Spanning Tree
Explanation
Appears only if Multicast Flooding is enabled.
Specifies if outbound multicast frames with unknown
destination addresses are flooded toward secondary LANs:
Enabled: The root access point controls flooding for all the
designated bridges on secondary LANs. Enabling this
parameter makes managing secondary LANs easier because you
do not need to set secondary LAN flooding parameters.
Set Locally: The designated bridges control flooding on their
LANs.
Appears only if Multicast Flooding is enabled.
Determines if outbound multicast frames with unknown
destination addresses are flooded toward end devices. Typically,
this parameter is checked. However, if your wired devices do
not need to initiate communication with wireless end devices,
you may want to clear this check box.
Determines the flooding structure when this access point
receives inbound unicast frames on non-root ports with
unknown destination addresses:
Disabled: You do not want the access point to flood any
inbound unicast frames.
Universal: The access point forwards the unicast frame to every
port. This option uses more bandwidth.
Hierarchical: The access point forwards the unicast frame only
to the port to which the root access point is attached.
Appears only if Unicast Flooding is enabled.
Specifies if outbound unicast frames with unknown destination
addresses are flooded toward secondary LANs:
Enabled: The root access point controls flooding for all the
designated bridges on secondary LANs. Enabling this
parameter makes managing secondary LANs easier because you
do not need to set secondary LAN flooding parameters.
Set Locally: The designated bridges control flooding on their
LANs.
Appears only if Unicast Flooding is enabled.
Determines if outbound unicast frames with unknown
destination addresses are flooded toward end devices.
Check this check box to enable ARP flooding. When an access
point receives an ARP request, it checks its ARP cache to
determine if the destination end device's IP address is known.
If you enable ARP flooding and:
• the destination end device is known, the access point
translates the ARP request into a unicast frame, which is
only forwarded to the destination end device. Therefore, all
end devices do not need to wake up to listen to the ARP
request, which saves battery life.
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