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Questions tagged [ethernet]

refers to the wired style to connect a bunch computers or a way to connect to such network. This tag is for both software and hardware part of this issue.

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meaning of “brd” in output of IP commands

In the following example: $ ip a | grep scope.global inet 147.202.85.48/24 brd 147.202.85.255 scope global dynamic enp0s3 What does the 'brd' mean?
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1answer
42 views

Altering eth1 MAC address [duplicate]

I need to alter the MAC address for eth1 ethernet device on my embedded system permanently so it retains this MAC address on every boot. The OS I'm using: VERSION_ID="v2015.12" NAME="Angstrom" ID="...
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0answers
32 views

Impossible to set the default gateway address on boot-up

I am using a BeagleBone embedded computer running Debian. I have two network interfaces : 1) A connection to a cellular modem over USB which uses ppp and connects to the outside world. It receives a ...
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0answers
58 views

Cannot get all my ethernet ports detected/connected

I'm trying to make connections through my 3 ethernet ports but for some reason my ubuntu can only detect 2 although there is a wired connection in the third port as well. Below is the result of ...
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1answer
44 views

Kali Linux - Wired connection failing unless machine gets restarted

I am using the newest version of Kali Linux (2018.4) but I have the following unusual issue. If I boot my machine up with the ethernet cable plugged in, the eth0 interface works just fine. However, if ...
2
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1answer
100 views

What happens if remove auto eth0 from /etc/network/interfaces

I am using a BeagleBone and have two network interfaces. One Ethernet interface which will connect locally to another device, and a ppp interface over USB which connects to a cellular modem. I want ...
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0answers
35 views

ubuntu linux machine fails to connect to wired network but recognizes ethernet cable

I got a new Ubuntu/Linux machine (Ubuntu 18.04.1 LTS) that I am trying to connect to the internet for the first time, wired via ethernet cable. Under Settings >> Network >> Wired, there is an On/Off ...
2
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2answers
30 views

Wake on LAN directly via Ethernet

I want to use wake on lan with my LG TV but it is only supported via cable connection. Is it possible to connect small computer (Orange Pi) directly to the TV via cable and send Wake packets directly?
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1answer
33 views

How do I connect to a QNAP [closed]

BACKGROUND DETAILS: I've inhereted a QNAP TS-459U-RP. I currently have it connected to my home router via an ethernet/rj45 cable. My computer is connected to the same router. How do I access the ...
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0answers
22 views

Run pppd with custom MAC address?

I want to run multiple PPPoE accounts on my Linux machine but unfortunately, each PPPoE account requires a different MAC address and my machine only has 1 Ethernet interface (buy another adapter is ...
2
votes
1answer
107 views

How to connect to ethernet while installing arch linux?

I am trying to install arch-linux on my thinkpad following the installation wiki. I plugged in the ethernet cable, and the ip link command will show: enp8s0: <BROADCAST,MULTICAST,UP,LOWER_UP> ...
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1answer
46 views

Wired ethernet disconnect after first webpage

I have an issue with my wired ethernet : After i plug it, the internet connection seem to be ok (ping at google.com --> OK), **but when i go to a website, after loading the first page, the connection ...
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0answers
44 views

Network teaming configuration

How to configure the teaming network? On our redhat machines we configured as the following the teaming network On each machine we have two links - ens1f5 and ens1f6 And we add the team0 file to ...
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0answers
33 views

Network teaming VS bonding configuration

as I am understanding we can set on Linux configuration BONDING or network teaming both approach support LAN fail over for example if on the server we have the following up link eth1 eth2 in ...
3
votes
1answer
171 views

Disable Wifi on Connection to Ethernet with NetworkManager

How can I disable my Wifi radio when I've connected to a network via Ethernet (wired), but enable the Wifi connection if I don't have a wired connection? Essentially, I want XOR switch for my wired/...
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1answer
63 views

Network capture using ethtool points to problem?

Issuing this: ethtool -S <network device> | egrep "err|fail" I get the following errors: tx_lost_interrupt: 225 rx_alloc_fail: 36297 What is, tx_lost_interrupt and rx_alloc_fail ? Do ...
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1answer
47 views

Busybox USB Ethernet adapter

I have an embedded device running busybox on an ARM 7 processor. How would I go about using a USB -> Ethernet adapter for network connectivity? Currently I only have a serial console. The system ...
1
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1answer
114 views

Can't permanently assign additional IP addresses to USB ethernet adapter via /etc/network/interfaces. Why?

I want to assign multiple IP4 addresses to a USB->Ethernet adapter in an Ubuntu 18.04 LTS system. I have removed netplan, since I find the yaml-based configuration even more obscure than the ...
3
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1answer
115 views

docker0 network interface is screwing up my network

I've installed docker on Ubuntu 16. Now I can no more connect to my wired network : ubuntu is using docker0 ethernet interface to connect to the network (the wifi interface still works) To resolve ...
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1answer
35 views

How can I track down the source of an Ethernet ARP table issue between Linux laptops?

On our home LAN, after rebooting the router, I cannot ssh from laptop A to laptop B except via the router. However, after doing a ping from laptop B to laptop A, I can connect normally from A to B. I ...
2
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0answers
35 views

Network Switching

Is it possible to switch between Wireless and Wired Connections when both are connected without switching off either one of the two connections in Ubuntu 18.04? The thing is that when I want to ...
0
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1answer
256 views

What does rx_csum_offload_errors mean?

I asked same question on serverfault but since I'm not sure where is proper to ask that I'm asking same question here. I see too many rx_csum_offload_errors on ethtool output and it constantly ...
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7answers
3k views

Naming convention standard for Ethernet and Wi-Fi interfaces on Linux machines

What is the naming convention standard for Ethernet and Wi-Fi interfaces on a Linux machine? We are developing a tool that should show only the Ethernet and Wi-Fi interfaces of the Linux machine and ...
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0answers
52 views

How does the Linux 3.10.105 kernel handle Ethernet broadcast storms?

In my embedded Linux device I want to find the source of Ethernet broadcast storm and flash the led once I detected the ethernet broadcast storm. Does Linux kernel handle broadcast storms? Is there ...
0
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1answer
28 views

discover eth0 after boot

On my embedded system I have an Ethernet PHY which is normally in reset state. There's a GPIO driven by the processor for the reset signal. If I bypass the driver on board and force the PHY in Non-...
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1answer
43 views

linux & identify the interface name on remote machine

lets say I want to ping to some machine as from my machine - moon ping -c 1 master01 now I want to understand what is the interface name in master01 machine that get the packet from ping so how we ...
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0answers
83 views

Linux Interface RX error & rx_brb_discard counter higher

I am running CentOS 7.5 Linux and server is totally idle no in production but today i got alert stating interface eth error and when i check interface counter was very high but it stopped after that, ...
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2answers
380 views

How set up link aggregation (bonding) in linux mint 19

I am using network-manager. I tried bonding my two wired connections eth0 and usb0, using GUI similar to nm-connection-editor (eth0 is connected to my router and usb0 is connected to cellphone). I can ...
2
votes
1answer
52 views

Share USB audio device over Ethernet [closed]

I connect my Linux laptop to an Onkyo P-3000R (a USB DAC) using a 10 meter USB cable. I would like to replace that long USB cable with a WiFi connection, if possible. I could connect my Onkyo USB ...
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0answers
107 views

USB-Ethernet adapter stops working periodically, as if going to sleep

My laptop uses a USB-Ethernet adapter for a wired connection. Periodically, while actively working, the connection is lost. NetworkManager tries to connect and to obtain an IP address via DHCP but ...
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0answers
30 views

Avoid bringing down ethernet iface when cable is unplugged

I have a device connected to my computer via Ethernet cable (I am actually using a USB to Ethernet adapter), and sometimes I have tu turn this device on and off . The interfaces file for the Ethernet ...
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0answers
85 views

Not able to configure eth0 on boot up

linux 4.9.11 android O I have a nxp imx6 sabresd reference board. I do not get my eth0 up after doing this ifconfig eth0 192.168.7.5 netmask 255.255.255.0 up the log I get after this is, adev_6dq:/...
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0answers
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Network interface not up

Ethernet interface shows down. Tried to make it up with the below command, but still it shows down. root@DLC-200:~# cat /sys/class/net/eth2/operstate down root@DLC-200:~# ifconfig eth2 up root@DLC-...
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1answer
62 views

How to regenerate a complete config file from a kernel Image from buildroot

I have an Image that I generated using buildroot that boots a kernel from an SD card and it works perfectly. I changed a few settings in the buildroot menus (I can't remember which ones) and now ...
1
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1answer
274 views

Disable Power from Ethernet

I'm trying to "turn off" the power that goes to a device over Ethernet. I'm using this card: https://www.startech.com/Networking-IO/Adapter-Cards/4-port-gigabit-poe-pcie-network-card~ST4000PEXPSE; it ...
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1answer
735 views

dhcpd and bridge - No subnet declaration error

I prepared dhcpd configuration in Debian 8 and it successfully worked but then I added bridge and dhcpd failed. bridge: root@remote:/home/s# brctl show bridge name bridge id STP enabled ...
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0answers
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Ethernet malfunction when booting with extra device on /dev

I have a customized Linux distro (created via buildroot) running on an embedded platform. The system consists in a processing module (Based on Samsung Exynos 4412 microprocessor) with a base board for ...
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0answers
242 views

Networking service makes eth0 to get down when restarting it in Debian 9 Strech

When you connect to a server via SSH, and server has a fixed IP address through /etc/network/interfaces file, if you try to change the IP address in that file, normally you would restart the ...
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0answers
471 views

The mysterious case of the slow ethernet connection on a Debian router

I have adapted an Intel NUC to act as my home router. It handles a VLAN on the LAN for the wifi clients and some ethernet clients, the local LAN, an OpenVPN server, the WAN connection. The strange ...
2
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1answer
1k views

Ethernet Connected but no internet access on Linux Mint

I new in connecting Ethernet with my Linux Mint, WiFi works fine. But I encountered quite a few errors. After spending 2 days searching I failed to connect. $ uname -a Linux 'username' 4.13.0-39-...
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2answers
1k views

Transparent Bridge from Existing WiFi to Ethernet?

I've seen lots of examples that turn the bridging machine into another router with its own DHCP server, etc. But I want to use a wired device as if it were connected directly to the original router. ...
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0answers
126 views

How can I create ethernet bridge in Linux system in Buildroot?

I have 2 (and will have additional 2) ethernet interfaces in my device, and I want them to be bridged. I use Buildroot for building my system. I want to create bridge at startup. Currently I use this /...
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0answers
39 views

My ethernet device has strange name on Ubuntu [duplicate]

My ethernet device has strange name on Ubuntu, is this normal? $ uname -a Linux calculon 4.4.0-93-generic #116-Ubuntu SMP Fri Aug 11 21:17:51 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux $ ifconfig ...
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1answer
385 views

network statistics of each queue in a multiqueue system

I have an NIC with multiqueue support so that based on priority of packets different queues will be used. I want to analyze the packet flow through each of these hardware queue. The queues are ...
0
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1answer
491 views

Beaglebone cannot connect to internet using ethernet cable

I've been trying to get my Beaglebone Black to connect to internet using an ethernet cable plugged direct into my Netgear router. I have tried many things but nothing has worked so far. Here are some ...
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0answers
40 views

Conflict between wlan and ethernet board

I'm using a linux based board to receive data from sensors and write them in a txt file.By configuring the board as webserver i'll reading the txt file by typing ip address. The protocol used is ...
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2answers
1k views

How to identify the switch port an interface is connected to?

Is there a way to send some (non-broadcast) packets out on an Ethernet interface that doesn't have an IP address assigned to it? Thus allowing me to see which light blinks on the network switch? The ...
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0answers
144 views

Mapping between FDIR to RSS queues for Intel 82599ES

I am working with Intel 82599ES 10-Gigabit SFI/SFP+ NIC with linux 4.4.0-116-generic native ixgbe driver. I am wondering about flow indirection table coming with NIC which has 16 fdir queues. Those ...
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2answers
31 views

How know in which router I'm when I'm connect by ethernet

When I'm connected by WLAN I can determinate in which network I'm by looking the SSID, for example: $ iwgetid -r ONOA72E $ nmcli -t -f active,ssid dev wifi | egrep '^yes' | cut -d: -f2 ONOA72E And I ...
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1answer
33 views

How to get the information about the status of data receiving and sending in ethernet?

Is there any tools to get the information about status of data receiving and sending in Ethernet (Real-time information is better, GUI tools is better)? The information includes: sending and ...