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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.

Ethernet is a family of computer networking technologies for local area networks (LANs). it refers to the wired style to connect a bunch of computers together or a way to connect to such network. This tag is for both software and hardware part of this issue.

699 questions
6
votes
1 answer

2 IPs on 1 ethernet adapter

I'm trying to get 2 ethernet adapters to work. The first one, eth0, works out of the box. The second one, eth1, acts weird. This port uses the LAN9512. This is my /etc/network/interfaces file: auto lo iface lo inet loopback auto eth0 iface eth0…
OrangeTux
  • 1,063
6
votes
1 answer

Ethernet adapter stuck at 10 Mbit/s

My Ethernet adapter is somehow stuck at 10 Mbit/s. Here's the output of ethtool eth0: Settings for eth0: Supported ports: [ TP MII ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full …
ithisa
  • 161
3
votes
1 answer

Getting Link Speed of USB Ethernet

How to get Link speed of USB Ethernet? $ sudo ethtool enp0s20u2c2 Settings for enp0s20u2c2: Current message level: 0x00000007 (7) drv probe link Link detected: yes $ sudo mii-tool enp0s20u2c2 SIOCGMIIPHY on…
Kokizzu
  • 9,699
3
votes
2 answers

How do I check the network speed right now?

I know about vnstat and that tracks over the hour/day/months. I would like to see the network speed right now. As in for a duration of a second or at most a minute. Kind of like how top can show me the current CPU usage. How might I check that? My…
user4069
2
votes
1 answer

interface MTU different than seen in "ip link show" output

I have two PCs directly connected like this: PC1[eth1] <-> [eth0]PC2 MTU on eth1 interface in PC1 is 9000 bytes. MTU on eth0 interface in PC2 is 2000 bytes: root@PC2:~# ip -s link show dev eth0 2: eth0: mtu 2000…
Martin
  • 7,516
1
vote
1 answer

Why does my Ethernet adapter have two devices?

My laptop has a single Ethernet port and a Realtek Ethernet controller: $ ip -brief addr lo UNKNOWN 127.0.0.1/8 ::1/128 enp2s0f0 DOWN enp5s0 UP 192.168.50.83/24…
rkhff
  • 795
1
vote
0 answers

How to estimate ethernet cable length?

Windows control panel has a feature to estimate the length of ethernet cable between the computer and the router. Is there a similar command in Linux? Cable Length: Displays the approximate length of the cable between the adapter and its link…
Colonel Panic
  • 462
1
vote
0 answers

Ethernet connection to the device is automatically reset

I'm accessing a ARM board from Linux via ethernet cable. The connection works. For this, I use the following configuration macabeus@acer ~ $ sudo ifconfig eth0 192.168.0.1 netmask 255.255.255.0 up And then... macabeus@acer ~ $ telnet…
Macabeus
  • 185
1
vote
2 answers

(Ethernet cables): Can a straight wire work (slightly) where a crossover-wire is necessary (without MDX)?

If I connect a straight Ethernet cable where a crossover cable should be used. Can I get the behaviour that it works occassionally, once in a while? Too me it seems it would either work or not, not occassionaly -is this correct? I have a situation…
JohnyTex
  • 205
1
vote
1 answer

ethtool flow control steer igmp packets

I am attempting to explicitly steer igmp packets to the kernel via ethtool. ethtool -U ens1f0 flow-type ip4 l4proto 2 action 0 rmgr: Cannot insert RX class rule: Protocol not supported Doing any protocol (tcp4, udp4) returns the same results.…
schuess
  • 171
1
vote
0 answers

No ethernet device detected

I'm trying to setup Archlinux on VMWare Workstation and for some reason I cannot find my ethernet card. In lspci | grep Ethernet it says Ethernet controller: Intel Corporation 82574L Gigabit Network Connection However in ip link it only lists 1: lo…
TwirlMandarin
  • 121
1
vote
2 answers

Cannot connect to ethernet on a cable modem

I have an Arris cable modem, and my laptop has a JMC250 PCI Express Gigabit Ethernet Controller. I'm unable to connect to its wired network either with NetworkManager, Wicd, or the command-line on Debian Stable. I have tried also running a Porteus…
admirabilis
  • 4,712
0
votes
1 answer

How to enable/disable NIC Rx

My computer has two Ethernet ports for receiving data, and each port has an open socket. The sender also has two Ethernet ports, and they are synchronizing and transmitting the same data. Based on my understanding, when a UDP socket is open,…
raon
  • 1
0
votes
0 answers

How to get rid of the ifcfg-Auto interface?

I'm currently handling a RHEL 6.4 system's network interface problem, which is, the system seemed to configure network automatically but always fail. And My goal is simple, just want to configure address manually to establish connection, not…
user53815
  • 57
0
votes
0 answers

Automatic DHCP Interface with Static Subinterface

I'm looking to configure an Ethernet interface so that it has its main interface set to DHCP (or statically), but then also build a sub-interface whenever the machine boots or Ethernet is connected. My /etc/network/interfaces configuration is below…
Ryan Wogh
  • 1
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