All Questions
Tagged with embedded networking
41
questions
0
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0
answers
13
views
wpa_supplicant fails to connect with some routers
I have a Yocto Linux device equipped with a Laird 450-0152r wifi module. When the system boots, a systemd service creates an access point using the following script:
#!/bin/bash
modprobe brcmfmac
iw ...
- 149
0
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0
answers
66
views
Accessing internet from device connected to AP
I have two interfaces uap0 and eth0 in my embedded Linux device. uap0 acts as an access point for other devices to connect to Linux Device. eth0 interface is connected to my router. And my router is ...
- 11
0
votes
1
answer
185
views
ethernet interping issue, Im able to ping to both eth0 and eth1 from eth0 itself. why?
In one of the projects, we are using the MYC-Y7Z020-4E512D-766-I SOM module with Linux kernel 4.1.4. Here we wanted to use 2 ethernet ports eth0 and eth1 our requirement is to set the IP of eth0 and ...
- 11
1
vote
1
answer
350
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How to configure connmand to not to add the unnecessary route with IP 0.0.0.0 and GW 0.0.0.0
The below route is sticky, even if manually deleted, it gets added by connmand (Connection Manager Daemon) with another interface name. If the specific interface is made down using ip link cmd, I see ...
- 13
1
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0
answers
46
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facing isue in UDP multicasting after changing ip of the device
we have a requirement for UDP multicasting in our project using Linux 4.1 kernel with static ip address.
basic UDP multicasting using sendto function to send data is working fine with device static ip ...
- 11
2
votes
1
answer
135
views
USB to ethernet: fail to transmit any packages
I have a custom embedded linux board with a lan7500i-ABZJ connected over USB.
So I compiled the linux kernel (using buildroot) with the smsc75xx module built in. The startup kernel messages indeed ...
- 123
0
votes
1
answer
6k
views
"Connection refused" when I try to send a UDP packet with netcat on an embedded-linux board
I'm trying to send a binary packet to a local process, via netcat (nc), like this:
nc -w 1 -u localhost 10000 < my_binary_packet.bin
The output is:
read(net): Connection refused
Anyone know what'...
- 2,662
1
vote
1
answer
4k
views
Why ifconfig shows a different IP address
I have Embedded Linux devices connected to a local network via Ethernet cable connection. I access each device via their local IP addresses on subnet 192.168.34.0/24. For example, one device has 192....
- 1,171
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0
answers
229
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Are there any other standard ways of bringing network interfaces up at boot, apart from using /etc/network/interfaces?
I'm working with a Yocto based embedded system and I want all external network interfaces to default to being disabled at boot.
Normally, I'd assume that they go up at boot because /etc/network/...
- 113
0
votes
1
answer
102
views
What happens when I turn my ethernet off? What steps does the OS perform once I turn the ethernet OFF?
I want to know what actually happens once I turn my ethernet OFF.
What does the OS do on a network layer?
Does it flush the routing table or anything like that.
- 45
0
votes
2
answers
6k
views
Embedded device wpa_supplicant reconnect
We have an embedded arm device running an OS based on Debian 9, running kernel 4.14.67-1.0.6+.
EDIT: As per @A.B's request, below is the driver/chipset info too for future viewers - I didn't know how ...
- 121
1
vote
1
answer
481
views
IP Camera with embedded Linux won't connect to internet using ethernet
I have an IP Camera from Thundersoft with a Qualcomm Snapdragon 625 chip inside that runs a Linux distribution. It is extremely limited in terms of available commands, and I can't install any new ...
0
votes
0
answers
351
views
Why "receive / transmit bytes" is so big difference between optical modem and host when download data on host?
ens33 is my host network card,it show a normal number as my network use status,but I don't know why my modem show a very small data traffic in all interfaces of modem when download on host.
My host:
...
- 993
0
votes
1
answer
187
views
Are there any network switch platforms for Linux/BSD? [closed]
There's plenty of barebone PCs/servers optimized for building custom Linux/BSD based routers, VPN servers or firewalls and in general various L3 devices. However I couldn't really find anything about ...
- 1,323
2
votes
1
answer
5k
views
`iw dev $interface scan` not working on embedded device
Running on a custom rockchip board with Ubuntu 14.04. I look at interfaces with ifconfig:
...
wlan3 Link encap:Ethernet HWaddr 08:ea:40:d7:63:27
inet addr:192.168.12.1 Bcast:192....
- 10.4k