ICOM AP-3 ユーザーズマニュアル
WIRELESS FUNCTIONS
7
46
7-2 Roaming Function
Ethernet LAN
Wireless transmission
area
AP-3
AP-3
AP-3
Moves
Moves
Switches AP-3 units
Switches AP-3 units
Wireless LAN card
Wireless LAN card
The roaming function refers to installing multiple AP-
3 units along an Ethernet LAN so that the wireless
transmission areas overlap. This arrangement allows
wireless terminal to maintain communications with
the Ethernet LAN while moving among the wireless
transmission areas. In short, this function allows the
wireless transmission area to be expanded.
3 units along an Ethernet LAN so that the wireless
transmission areas overlap. This arrangement allows
wireless terminal to maintain communications with
the Ethernet LAN while moving among the wireless
transmission areas. In short, this function allows the
wireless transmission area to be expanded.
■
Schematic
illustration
illustration
■
Roaming function
precautions
precautions
●
Overlapping of IP addresses can be avoided by setting
up only one of the AP-3 units so that the DHCP server
function is enabled.
up only one of the AP-3 units so that the DHCP server
function is enabled.
●
Within the mobile wireless transmission area (roaming
area), all wireless terminals and AP-3 units for which
the roaming function will be used must use the same
[ESS ID] setting.
Wireless terminals set to a different [ESS ID] will not be
able to communicate with the AP-3 units.
area), all wireless terminals and AP-3 units for which
the roaming function will be used must use the same
[ESS ID] setting.
Wireless terminals set to a different [ESS ID] will not be
able to communicate with the AP-3 units.
●
The wireless LAN terminals, including those in the
roaming area, will operate as part of the same network
group as wired LAN terminals. Therefore, routing mode
(
roaming area, will operate as part of the same network
group as wired LAN terminals. Therefore, routing mode
(
☞
p. 51) cannot be used when the roaming function is
used.
●
When SL-1100 or SL-1105 LAN cards are used and
roaming is conducted using the same channel for all
LAN cards, the transmission speed may decline in the
interference areas where the signals from two wireless
access points (i.e., AP-3 units) can be received simul-
taneously. To avoid interference completely, set the
channels of the AP-3 units at least four channels apart.
roaming is conducted using the same channel for all
LAN cards, the transmission speed may decline in the
interference areas where the signals from two wireless
access points (i.e., AP-3 units) can be received simul-
taneously. To avoid interference completely, set the
channels of the AP-3 units at least four channels apart.
●
Connect the AP-3 units in a cascade arrangement by
connecting them through a hub using Ethernet cable.
connecting them through a hub using Ethernet cable.