ADS-TEC RAP/RAC1000 User Manual - Manual (Page 192)

IT Infrastructure RAP/RAC1000
192
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B RIDGE M ODE
The ads-tec WLAN Clients know three different bridge modes.
FTB (Fully Transparent Bridge): Can be used for ads-tec compatible Access Points. Here
all devices downstream from the WLAN Client can be activated on Layer 2.
For all non-compatible ads-tec Access Points, one of the following bridge modes is
needed.
MCB (Multi Client Bridge): All Ethernet users downstream from the WLAN Client are
masked with the MAC address of the WLAN interface. Here the first device is fully
masked transparently on Layer 2, while the other devices are provided with a transparent
access through Layer 3 (i.e. only protocol data can be transferred).
SCB (Single Client Bridge): Here exactly one Ethernet user is masked who is provided full
transparent access through Layer 2, his MAC address must however be entered manually
in the web interface of the WLAN Client.
Note:
In the operation mode of the IP Router or Extended Background Scanning & IP Router, a
bridge mode is not needed, the configuration side is deactivated.
R
OAMING MODE
• Standard Roaming: This is the slowest of all roaming modes. Here criteria are defined
according to which the WLAN Client falls back into the Scan status and scans all
channels. Depending on the number of channels to be scanned, this may last several
seconds.
• Extended Background Scanning: In this roaming mode, the WLAN interface keeps up the
data link, while the second one searches for further Access Points. If the configurable
criteria for an Access Point change are dropped below, then the first WLAN interface
directly logs in at the new Access Point. Scanning is dropped allowing for roaming times
from 10 to 50ms.
• Extended Background Scanning & IP Router: This roaming mode does not differ in its
roaming characteristics from the Extended Background Scanning. However, this mode is
able due to the combination with the IP router mode to build up another IP network
downstream from its WLAN interface. By communicating with NAT and Port Forwarding,
masked access to Wireless Controllers can be realised in this way despite the safety
functionality.
• Seamless Roaming: This roaming mode only works in combination with ads-tec Access
Points. Both interfaces build up data links while always only one interface sends data
actively. If necessary, the roles can be exchanged. So interruption-free roaming
processes can be realised.