Wireless LAN – WLAN
92
3.5
Extended WLAN protocol filters
BAT54-Rail/F..
Release
7.54
06/08
U Example application
Clients within wireless networks often have one aspect in common: a high
degree of mobility. Consequently, clients are not necessarily always connect-
ed to the same access point, but frequently change between access points
and the related LANs.
The redirect function assists WLAN client applications to automatically find
the correct target computer in the LAN. If a WLAN client's HTTP request from
a particular logical wireless network is to be always directed to a particular
server in the LAN, a filter setting with the "Redirect" action is set up for the
appropriate protocol for the desired logical WLAN interface.
All requests with this protocol from this logical wireless network are automat-
ically redirected to the target server in the LAN. The returning data packets
are sent to the senders' addresses and ports according to the entries in the
connection statistics, ensuring trouble-free operation in both directions.
3.5.4 DHCP address tracking
DHCP address tracking keeps a record of which clients have received their
IP addresses using DHCP. The relevant information for an interface is auto-
matically maintained in a table under
Status > LAN Bridge Statistics > DHCP
Table
. DHCP tracking is enabled on an interface if, for this interface, a mini-
mum of one rule is defined where 'DHCP Source MAC' is set to 'Yes'.
10.0.0.99
Logical wireless network on
interface WLAN-1-2
HTTP request to
192.168.2.25
Redirect: HTTP from
WLAN 1-2 to 10.0.0.99
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