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245U-E Wireless Ethernet Modem User Manual
59
Rev Version 2.24
recommended that the scan list be used to limit the number of channels the client needs to scan, thus
reducing the overall scan time.
During the background scan, a client will scan all of the channels in the scan list to identify better access
points. If no channels are configured it will scan all channels.
Figure 50
Scan List
The configuration in Figure 50 shows that the client will start scanning when the RSSI of its current
connection to the access point falls below -90 dBm. When this happens it will scan the list of access points
configured in the roaming scan list (in this case, channels 1, 4 and 6), and if any of the RSSI levels are
greater than -84 dBm it will change to this access point.
3.17 Repeaters (WDS)
The range of a wireless network can be extended by allowing access points to behave as repeaters and
forward traffic to other access points. Access point to access point communications is also known as
wireless distribution system (WDS). The 245U-E offers very powerful WDS configuration, allowing for a
mesh network with self-healing functionality. Alternatively, fixed access point to access point links can be
configured for optimized throughput.
Figure 51
WDS Repeaters
Each WDS interface can be either a bridge or router interface (see “1.0 Network Topology” for more
information on bridge versus router). If you need a simple repeater network, use a bridge interface.
