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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2
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0answers
14 views

linux udev rule to load gadget module for client driver

I'm having a hard time automating loading a gadget module and bringing up the usb0 device as a eth interface. The interface in question is g_ether for a embedded Linux device and connecting to a PC. ...
1
vote
3answers
668 views

Virtual Interface Not Showing up in ifconfig?

I am trying to create a virtual interface for the purpose of NameBased Virtual Hosting on my CentOS linux box; please find below is the devices' information:- DEVICE=eth0 BOOTPROTO=dhcp ...
4
votes
1answer
35 views

Send traffic to self over physical network on Ubuntu

I have a dual port ethernet NIC and let's say I have connected both ports in a loop and assigned the following IPs to the 2 ethernet interfaces: eth2 -> 192.168.2.1 eth3 -> 192.168.3.1 I want to ...
3
votes
3answers
2k views

Can't connect to to internet. Debian Wheezy, pinging DNS address works

I have booted Debian Wheezy from SD card on a Beaglebone Black board. Version: debian-wheezy-7.0.0-armhf-3.8.13-bone20.img.xz, from http://www.armhf.com/index.php/download/ I have set up my ...
1
vote
0answers
33 views

Which filter configuration in kernel rate limit the outgoing packets to 1packet/sec?

Which net filter in kernel configuration other than iptables enable rate limiting on the outgoing packets on ethernet port?
1
vote
1answer
42 views

Can I mirror lo as eth0? [closed]

Is it possible to make eth0 point to lo? I have dumb process that keeps acting as eth0 exists while it doesn't.
3
votes
2answers
7k views

Check whether network cable is plugged in without bringing interface up

I am trying to identify NICs on ~20 remote servers (2-6 NICs on every server). To begin with, I want to identify those ready for use and free ones. How can I check the state of the physical media? I ...
2
votes
3answers
782 views

Why is delay after ifconfig down needed before up if changing MAC address?

Hi I made bash script to put down my interface, change MAC address and get it up again. #!/bin/bash INTERFACE_STATUS=$( cat /sys/class/net/eth0/operstate ) echo "$INTERFACE_STATUS" if [ ...
0
votes
1answer
765 views

Mint 15 on Lenovo G700: wired internet not working (Atheros QCA8172)

Mint 15 doesn't see internet after installing it in dualboot with windows 8 (in Windows internet works well). My network card is Qualcomm Atheros QCA8172 Fast Ethernet (rev 10). What I did: Install ...
2
votes
2answers
49 views

change eth0 to eth1 without udev

I have very interesting issue, We have Redhat 4 Linux and it is has 4 Ethernet interface. eth0 eth1 eth2 eth3 Now only eth0 is connected to LAN and everything working find. We have special software ...
2
votes
1answer
970 views

eth0 r8169 down on wake up from standby

On waking up after standby the network (eth0) remains down. The eth0 card is r8169. I have tried : ifconfig eth0 up Doesn't work ifconfig eth0 up; dhcpcd eht0 Worked but how do I configure my ...
2
votes
1answer
170 views

No wired ethernet connection

I'm using elementary OS (based on Ubuntu 12.04) and yesterday I woke up to no wired ethernet connection. As far as I can remember I changed absolutely nothing, it was working at night and not anymore ...
1
vote
1answer
521 views

Setting up Intel Giga PHY I217V on Debian 2.6.32 kernel

Trying to getting the Intel integrated network card driver (Giga PHY Intel I217V) working on Debian (kernel 2.6.32) but I'm having issues. I've downloaded the driver from the Intel website and ...
1
vote
2answers
69 views

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 ...
0
votes
0answers
20 views

dhcpd on two network interface how to?

I have an embedded system that has Ethernet and wifi. I want to setit up in a way that it provides IP to both interfaces. The system uses BusyBox. and I an new in this area. can you provide a sample ...
0
votes
0answers
48 views

Connecting BeagleBoard-xm OS Angstrom direct to Laptop ubuntu 12.04

I have BeagleBoard-xm with Angstrom OS. My Laptop's OS is Ubuntu 12.04. I managed to connect Laptop to another Laptop, direct through crossover cable. I wanted to connect BeagleBoard-xm to the ...
0
votes
0answers
10 views

Can we throw jar application to other systems display? [duplicate]

I have a jar file which I need to run from my terminal but should throw display via network. Is it possible like xclock or xterm? xclock -display 1.2.3.4:0.0 Is working fine. java -jar app.jar Can we ...
0
votes
0answers
18 views

Cisco router interface connected to PC is up while PC interface is down

I have a following topology: C2801[Fa0/0] <-> [eth0]PC According to Cisco 2801 router, the interface facing the PC is up: C2801-A#sh int description Interface Status ...
2
votes
1answer
156 views

Hardware Timestamping using PTP

I'm new to Linux programming. I have an Intel NIC with e1000e driver. I'm working on accurate time stamping of packets being captured from a network. My question is if I want to use RT Linux how ...
8
votes
1answer
168 views

Send a packet over the network even when its target is the local host

Under Linux if you send a packet to the address of one of its network interfaces, this packet is routed internally, it is never sent over the network. That's the right thing in 99.99% of the cases. ...
4
votes
2answers
215 views

What happens when I plug a Ethernet cable?

What happens when I plug in a Ethernet cable? I want to be able to see what's happening on the Level 2/3 (I believe the protocols I'm trying to watch is Ethernet, IP (v4 and v6) and DHCP for IP ...
1
vote
0answers
124 views

Super slow internet requests

My Internet connection seems to be extremely slow on loading pages, specifically (it appears) when the browser sends the request for the first time. It takes like 5-6 seconds just to send the request ...
0
votes
2answers
154 views

How to check if ARP is enabled or not

I have enabled the arp support on my dell based server running linux on it. I wanted to check that if arptables are enabled or not. Could anyone tell me how do I check the same? Is it enough to run ...
3
votes
1answer
380 views

What's the difference between the drivers r8169 and r8168?

Realtek provides the source code for the r8168 driver which is based on the r8169 driver from the kernel tree if I may believe their source: /* * This driver is modified from r8169.c in Linux kernel ...
3
votes
1answer
151 views

usb0 -> what exactly is it for?

So far, I found out that on GNU/Linux /media/usb0 seems to be a mount point for Ethernet over USB. Nice. Question: Where is defined, what usb0 is exactly for? I distilled the above mentioned ...
3
votes
2answers
602 views

Wait for ethernet cable plug-in/plug-out event under Linux?

I know that I can poll the link state via the SIOCETHTOOL/ETHTOOL_GLINK ioctl but this would require to endlessly request the state. The same goes for parsing /var/log/messages. So my questin is, is ...
8
votes
2answers
1k views

How can I disable TCP/IP for an Ethernet adapter?

I have CentOS 6.3 running in a (virtual) machine with two Ethernet adapters. I have eth0 connected to a TCP/IP LAN and eth1 connected to a DSL modem. The system is intended as a dedicated ...
1
vote
1answer
529 views

serial data over ethernet on a linux box

I'm trying to connect a widget (192.168.1.214:20108) through Ethernet (serial to Ethernet) to a Linux box. Under Windows using a virtual device driver mapping I can see the serial data, so I know ...
0
votes
0answers
123 views

Linux Mint 15 Ethernet Issue

I have a dual boot system with Mint and Win7. Under Mint the wired connection is going in and out randomly, short period of being out and 10-20 minutes up and working. I start up Linux and ...
2
votes
1answer
41 views

Multiple Lan interfaces on one VM rather than multiple VM

I'm looking if it's possible to give rights, to only allow the use of one network interface to a specific user on a Linux distribution. My use case: I want, for my studies, testing the ...
0
votes
4answers
317 views

Internet not working

I am using Linux mint. And this is my kernel. uname -a Linux nithesh-desktop 3.8.0-19-generic #29-Ubuntu SMP Wed Apr 17 18:16:28 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux I was having a networking ...
2
votes
1answer
397 views

No ethernet/wireless connection after dist upgrade - “network UNCLAIMED”

I did an upgrade from Xubuntu 12.04 to 12.10, and I can't connect to the internet now. When I press the network button on the panel, I see "No network devices available" on top (greyed out), then ...
2
votes
2answers
528 views

ethtool get permanent MAC address returns all 0's

I need to read permanent (burned-in) MAC address of network adapter. Since MAC address can be easily spoofed, I need to read the real one which is written on EEPROM. I need to do it using C++ on ...
4
votes
3answers
354 views

How do I share an internet connection through USB?

I have two Linux boxes. One is running KNOPPIX and the other Ubuntu. I have only one wifi dongle between them, and only one of them has an Ethernet port. They both have free USB ports however. I ...
1
vote
0answers
17 views

Change name of em1 to eth0 in Fedora 19? [duplicate]

I have already followed the instructions here but it doesn't seem to work, as my ifconfig output still shows the same "em1","em2" and "lo". I just need a way to rename one of these to eth0 in Fedora ...
1
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0answers
44 views

Can we Bring Up eth1 after removing e1000e modules?

I am trying to setup TCP in RTnet. I am not sure whether its possible. I read that RTnet is not supporting TCP. Is that so? So now I am trying to setup rteth0 as server and eth1 as client. To setup ...
1
vote
0answers
190 views

wpa_supplicant connection issue: iw dev wlan1 link shows connection, but network unreachable

I've been testing a Wifi card in my machine and I can't seem to get it to connect to my home router. The card is a ralink rt37, I compiled the modules that I needed into the kernel and downloaded a ...
3
votes
5answers
4k views

Low Cost, 2 Ethernet Ports & Runs Linux [closed]

Looking for an inexpensive embedded device that contains 2 Ethernet Ports, runs Linux (or some other type of Unix), and is under $50. My main concern is cost. It must be under $50 and have 2 Ethernet ...
1
vote
0answers
218 views

Bonding configuration on a blade server with Oracle 6.3

I'm trying to configure a mode 6 bonding on a blade server. Blade Enclosure: HP c7000 Blade Server: ProLiant BL460c G1 Redundancy part of the bond is working, I can pull out any one of the cables ...
3
votes
1answer
92 views

Linking Ethernet interfaces

I'm quite new to Linux networking. I have a Debian PC with two Ethernet interfaces, one embedded on the motherboard and another on a PCI card. The first one, let say eth0 is connected to my router ...
2
votes
1answer
1k views

How To Diagnose Faulty (onboard) Network Adapter

I'm looking for advice on diagnosing ethernet connectivity issues under Linux. I suspect it's a hardware issue, though I am not entirely sure. It's an nVidia chipset and ethernet adapter. The device ...
0
votes
0answers
632 views

Linux Mint 15 Ethernet Problems

I have a problem with my ethernet connection on my mint 15 (my WiFi works fine). Right after install, it didn't work at all, I followed some solutions I found (including this one) and no luck. I had ...
2
votes
0answers
96 views

Bonds vs. Aggregators

I'm almost to the point where I can post the solution I wound up with for my complex port bonding question. However, in reading the bonding.txt file, I see this option text: ad_select Specifies the ...
1
vote
0answers
117 views

RHEL 5 complex port bonding

The RHEL 5 documentation is good about bonding pairs of ports in various ways. The Oracle team where I work want to get more complex than that. They want an active bonded pair, with a third interface ...
1
vote
1answer
175 views

Unable to recognize old interfaces after motherboard update

I updated motherboard on x240 computer node, now the ethernet interfaces show up as eth2 and eth3 previously it was eth0 and eth1. I tried to delete /etc/udev/rules.d/70-persistent-net.rules file but ...
1
vote
0answers
54 views

No network interface for the lan9118 emulated on QEMU 1.4.0 overo machine

Im using QEMU 1.4.0 Ubuntu 13.04 distribution. Im trying to make the virtrual machine part of the host network so Im ussing this command: sudo qemu-system-arm -M overo -m 1024 -sd ./test.img -clock ...
1
vote
3answers
491 views

Using multiple NICs for faster internet?

My laptop have a ethernet card and a wifi card. Ethernet line have maximum download rate at 1.5MiB/sec and wifi is over 1MiB/sec too, but it seem only have one NIC can working at a moment (if I turn ...
1
vote
1answer
115 views

Parsing protocol and url from packet payload

We are using pf_ring to capture packets. We are able to decipher information like source and destination ip, mac etc from the header information. Now we are moving into payload to decide the type of ...
4
votes
3answers
393 views

Find out if computer started via Wake-on-LAN or power putton?

Is there any (reliable) way to find out if the PC booted because of a Wake-on-LAN Packet instead of pressing the power button? I want automatically check if WOL is correctly configured. I know about ...
2
votes
1answer
64 views

Hardware Ethernet IP Limitation

In Linux Environment How many number of IP address I can assign to a Hardware ethernet interface ? Is there any limitation ? what is the maximum no. of virtual ethernet interface I can assign to a ...