https://files.ettus.com/manual/page_usrp2.html
Changing the IP Address
The USRP N210 comes with a default IP address of 192.168.10.2 which may be changed (e.g. 192.168.1.11):
./usrp_burn_mb_eeprom --args="addr=192.168.10.2" --values="ip-addr=192.168.1.11"
Increase Socket BUffers
sudo vi /etc/sysctl.conf
# Increase buffers for USRP
net.core.wmem_max=50000000
net.core.rmem_max=50000000
net.core.wmem_default=50000000
net.core.rmem_default=50000000
Realtime Priority
sudo vi /etc/security/limits.conf
# Add for USRP realtime priority
myusername - rtprio 99
Will require re-login
Updating N210 Firmware and FPGA
sudo /usr/local/lib64/uhd/utils/uhd_images_downloader.py
cd /usr/local/lib64/uhd/utils
uhd_image_loader --args="type=usrp2,addr=192.168.1.11"
Cycle power on the USRP
Probe
uhd_usrp_probe --args "addr=192.168.1.11"
Benchmark
cd /usr/local/lib64/uhd/examples
./benchmark_rate --rx_rate 25E6 --tx_rate 25E6 --args "addr=192.168.1.11"
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