Installation guide

34
Cisco uBR7200 Series Universal Broadband Router Wireless Modem Card and Subsystem Installation and Configuration
78-6030-03
Configuring a Wireless Modem Card
Figure 30 RF-to-RF Link Example
The configurations for both ends of the link are shown below.
uBR1 Configuration:
UBR1# show running-configuration interface radio 6/0
Current configuration:
!
interface radio6/0
ip address 10.0.0.1 255.255.255.0
radio master
radio receive-antennas 1
radio operating-band tx 5733.00 rx 5781.00
radio channel-setup bandwidth 6.0 throughput high
radio transmit-power 30
radio cable-loss 1 5
end
uBR2 Configuration:
UBR2# show running-configuration interface radio 6/0
Current configuration:
!
interface radio6/0
ip address 10.0.0.2 255.255.255.0
radio receive-antennas 1
radio operating-band tx 5781.00 rx 5733.00
radio channel-setup bandwidth 6.0 throughput high
radio transmit-power 30
radio cable-loss 1 10
end
There are several important points to remember when configuring the RF-to-RF link:
• Only one end of the link must be the master. For this example, uBR1 represents the master.
• The operating-band transmit frequency on uBR1 must match the receive frequency on UBR2. If
multiple wireless modem cards are used within the same Cisco uBR7200 series chassis or in the
same location, refer to the Cisco Broadband Fixed Wireless Site Planning Guide for details on
selecting the frequencies for multiple links.
• The operating-band transmit and receive frequencies must match those of the duplexer installed in
the transverter.
• The channel-setup command must match on both ends of the link.
• The transmit-power level should be determined by referring to the Cisco Broadband Fixed Wireless
Site Planning Guide. (In the previous example, the transmit power has been set to 30 dBm.)
• The cable-loss parameter should be determined by measuring the cable loss at the IF center
frequency of 400 MHz. The system requires a combined 12 dB of loss from both the cabling and
built-in attenuators. Setting the cable-loss parameter adjusts the built-in attenuators to keep the total
loss at 12 dB. The default cable-loss value is set at 0 dB (short cables), meaning that all of the 12
dB of built-in attenuators are being used.
uBR1 (master)
IP address 10.0.0.1
Transmit at 5.733 GHz
Receive at 5.781 GHz
uBR2 (slave)
IP address 10.0.0.2
Receive at 5.733 GHz
Transmit at 5.781 GHz
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