2 Functions and Wireless Link Mode
14
FX-DS540-AP, FX-DS540-APP
MAC Address Filtering
MAC address filtering is the function to permit only the user units whose MAC address has been
registered for an AP to log in to the AP. Using this function can reject an attempt to log in to an AP by
an unidentified user unit not registered in the AP.
Figure 2.4 shows a sample image of connections under control of MAC address filtering. The example
assumes that the MAC addresses of UU1 and UU2 are registered in the MAC address filtering list for the
AP while UU3’s MAC address is not registered in the list. In this case, UU1 and UU2 can log in to the
AP but UU3 cannot. To permit UU3 to log in to the AP, the AP’s administrator has to add the UU3’s
MAC address to the MAC address filtering list for that AP.
10/100M
W TX /WR X
MGM T
POW
ER
WLI NK
O N
O FF
LIN K/ACT
FDX/CO L
CF2
UU1
AP
UU2
UU3
Registered MAC
addresses
UU1
UU2
AP : Unit type AP(FX-DS540-AP/APP)
UU : User unit(FX-DS540-PCC/PCC2)
Network A
Figure 2.4 MAC address filtering