On 2025-08-18 15:35, shapkiqua...@gmail.com wrote:
The Ettus 210 has become unreachable through pings after changing its
IP address. I flashed the EEPROM (as shown below) and then re-powered
the radio. The radio should be reachable this way, but has become
bricked. When the N210 was on a different VLAN, I could ping it just
fine, but is now unreachable with this new IP.
What should I try next to fix this N210?
My guess is that you have a network infrastructure issue -- unless this
device is directly connected to your computer.
$ ./usrp_burn_mb_eeprom --read-all
Creating USRP device from address:
[INFO] [UHD] linux; GNU C++ version 9.4.0; Boost_107100;
UHD_4.8.0.HEAD-0-g308126a4
[INFO] [USRP2] Opening a USRP2/N-Series device...
[INFO] [USRP2] Current recv frame size: 1472 bytes
[INFO] [USRP2] Current send frame size: 1472 bytes
[WARNING] [UDP] The send buffer could not be resized sufficiently.
Target sock buff size: 2500000 bytes.
Actual sock buff size: 1048576 bytes.
See the transport application notes on buffer resizing.
Please run: sudo sysctl -w net.core.wmem_max=2500000
[WARNING] [UDP] The send buffer could not be resized sufficiently.
Target sock buff size: 2500000 bytes.
Actual sock buff size: 1048576 bytes.
See the transport application notes on buffer resizing.
Please run: sudo sysctl -w net.core.wmem_max=2500000
[WARNING] [UDP] The send buffer could not be resized sufficiently.
Target sock buff size: 2500000 bytes.
Actual sock buff size: 1048576 bytes.
See the transport application notes on buffer resizing.
Please run: sudo sysctl -w net.core.wmem_max=2500000
[WARNING] [UHD] Unable to set the thread priority. Performance may
be negatively affected.
Please see the general application notes in the manual for
instructions.
EnvironmentError: OSError: error in pthread_setschedparam
Fetching current settings from EEPROM...
EEPROM ["hardware"] is "2577"
EEPROM ["revision"] is ""
EEPROM ["product"] is ""
EEPROM ["mac-addr"] is "00:80:2f:35:33:56"
EEPROM ["ip-addr"] is "172.16.0.220"
EEPROM ["subnet"] is "255.255.255.0"
EEPROM ["gateway"] is "172.16.0.1"
EEPROM ["gpsdo"] is "none"
EEPROM ["serial"] is "3255BB7"
EEPROM ["name"] is ""
Done
$ ping -c 9 172.16.0.220
PING 172.16.0.220 (172.16.0.220) 56(84) bytes of data.
From 172.16.0.88 icmp_seq=1 Destination Host Unreachable
From 172.16.0.88 icmp_seq=2 Destination Host Unreachable
From 172.16.0.88 icmp_seq=3 Destination Host Unreachable
From 172.16.0.88 icmp_seq=4 Destination Host Unreachable
From 172.16.0.88 icmp_seq=5 Destination Host Unreachable
From 172.16.0.88 icmp_seq=6 Destination Host Unreachable
From 172.16.0.88 icmp_seq=7 Destination Host Unreachable
From 172.16.0.88 icmp_seq=8 Destination Host Unreachable
From 172.16.0.88 icmp_seq=9 Destination Host Unreachable
--- 172.16.0.220 ping statistics ---
9 packets transmitted, 0 received, +9 errors, 100% packet loss,
time 8176ms
pipe 4
Local computer shows,
$ ip addr show enp3s0
3: enp3s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
fq_codel state UP group default qlen 1000
link/ether 98:b7:85:1e:d0:cf brd ff:ff:ff:ff:ff:ff
inet 172.16.0.88/24 brd 172.16.0.255 scope global noprefixroute enp3s0
valid_lft forever preferred_lft forever
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