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245U-E Wireless Ethernet Modem User Manual
Rev Version 2.24
IP Address
Bridge Mode—The IP address of the 245U-E module. Both wired (Ethernet
Interface) port and wireless (Wireless Interface) ports will take on this address.
Router Mode—Separate IP addresses are required for each interface. IP
addresses must be different.
IP Subnet Mask
The IP network mask of the 245U-E module. This should be set to the
appropriate subnet mask for your system (typically, 255.255.255.0). In Router
mode, each interface will have its own netmask.
Default Gateway
This is the address that the device will use to forward messages to remote
hosts that are not connected to any of the local bridged networks (Ethernet
or Wireless). This is only required if the wired LAN has a gateway unit that
connects to devices beyond the LAN (for example, Internet access). If there is
no gateway on the LAN, set this to the same address as the access point (the
Ethernet IP address below).
Refer to “3.18 Routing” for more information.
Save Changes
Save changes to non-volatile memory. The module will need to be restarted
before the changes take effect.
Save Changes and Reset
Save settings to non-volatile memory and reboot the 245U-E. Once the module
has completed the reboot sequence, all changes are in effect.
3.5 Spanning Tree Algorithm
The bridge Spanning Tree Protocol function was introduced to handle network loops and provide redundant
paths in networks. To enable the STP box on any WDS connections that you have configured on the
Repeaters configuration page.
For example, consider the network below (Figure 29) with a redundant wireless link. If the bridge Spanning
Tree Protocol is enabled, one of the two wireless links will be disabled and all wireless data will be
transferred by one link only. If the active link fails, the other link will automatically start transferring the
wireless data. The Spanning Tree Protocol implemented is IEEE 802.1d compatible. The algorithm forms
a loop-free network by blocking traffic between redundant links in the network. These blocked links are
placed in a standby condition and may be automatically enabled to repair the network if another link is lost.