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Cooper Bussmann 945U-E Wireless Ethernet Modem & Device Server User Manual
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Rev Version 2.14
Router Operation (Routed Network)
A router joins separate IP sub-networks together. The router has different IP addresses on its wired and wireless
ports, reflecting the different IP addresses of the separate Ethernet networks. All of the devices in these separate
networks identify the router by IP address as their gateway to the other network. When devices on one network
wish to communicate with devices on the other network, they direct their packets to the router for forwarding.
Because the router has an IP address on each of the networks it joins, it inherently knows the packet identity. If the
traffic directed at the router cannot be identified for any of the networks to which it is connected, the router must
consult its routing rules as to where to direct the traffic. For details on configuring routing rules, see “3.17 Routing
Rules.”
3.8 Radio Configuration
The 945U-E can be configured for different radio transmission rates. A reduction in rate increases the reliable range
(transmission distance). The factory default data rate settings are suitable for the majority of applications and should
only be modified by experienced users.
The 945U-E allows for a configurable fixed rate or an “Auto” radio transmission rate. When a fixed rate is
configured, the radio transmission rate is never altered even under extremely poor conditions. When Auto rate
is configured, the radio transmission rate will automatically change to give the best throughput. When a radio
transmission is unsuccessful the 945U-E will automatically drop to the next lowest data rate, and if subsequent
transmissions are successful at the lower rate, the 945U-E will attempt to increase to the next highest rate. When a
station connects to an access point, the two devices negotiate a data rate based on which is within the configured
range of radio data rates for both devices.
Select the Radio menu to change the following configuration parameters. If a change is made, you need to select
Save Changes to retain the changes. Changes will not take effect until the module is reset.
Figure 31 Radio Configuration
