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Cooper Bussmann 945U-E Wireless Ethernet Modem & Device Server User Manual
Rev Version 2.14
Device Mode
Used to select Bridge or Router mode. By default, this is set to Bridge. If VLAN is
enabled the Device Mode will indicate “VLAN” and the IP Address and Netmask will
only be editable from the VLAN page.
Bridge STP
Selecting this checkbox enables Spanning Tree Protocol in bridged networks. See
“3.5 Spanning Tree Algorithm” for details.
Obtain IP Address
Automatically
Selecting this checkbox enables DHCP client on the 945U-E. A DHCP client requests
its IP address from a DHCP server which assigns the IP address automatically. For
more information, refer to “3.20 DHCP Server Configuration.” By default, this option is
not selected.
IP Address
Bridge Mode—The IP address of the 945U-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 945U-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 “3.17
Routing Rules” 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 945U-E. Once the module has
completed the reboot sequence, all changes are in effect.
3.5 Spanning Tree Algorithm
The bridge Spanning Tree Protocol (STP) function was introduced to handle network loops and provide redundant
paths in networks. To enable this function, select the STP checkbox on any WDS connections that you have
configured on the Repeaters configuration page.
For example, consider the following network (Figure 25) with a redundant wireless link. If the bridge STP 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.
