Intermec WA21 System Manual page 142

Chapter 5 — Configuring the Spanning Tree
128
ARP requests are multicast frames that are periodically sent out to all
devices on the Ethernet network. An ARP cache is a table of known MAC
addresses and their IP addresses that the access point maintains. 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.
To configure global flooding
1 From the main menu, click Spanning Tree Settings > Global
Flooding. The Global Flooding screen appears.
2 Configure the Global Flooding parameters. For help, see the next table.
3 Click Submit Changes to save your changes. To activate your changes,
from the menu bar click Save/Discard Changes, and then click Save
Changes and Reboot. For help, see "Saving Configuration Changes"
on page 33.
Global Flooding Parameter Descriptions
Parameter
Multicast Flooding
Explanation
Determines the flooding structure when this access point
receives inbound multicast frames on non-root ports with
unknown destination addresses:
Disabled: You do not want the access point to flood any
inbound multicast frames.
Universal: The access point forwards the multicast frame to
every port. This option uses more bandwidth. Use this option
if the root access point is supporting more than one wireless
hop to ensure that ARP requests and multicast traffic are
distributed.
Hierarchical: The access point forwards the multicast frame
only to the port to which the root access point is attached.
MobileLAN access WA2X System Manual