The ethernet tag has no wiki summary.
8
votes
1answer
498 views
what level of the network stack does tcpdump get its info from?
As I was trying in vain to fix a faulty ethernet controller here, one thing I tried was running tcpdump on the machine.
I found it interesting that tcpdump was able to detect that some of the ICMP ...
7
votes
2answers
507 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 ...
7
votes
2answers
971 views
Solving Ethernet watchdog timer deadlocks
I have a debian linux box (Debian Squeeze) that deadlocks every few hours if I run a python script that sniffs an interface...
The stack trace is attached to the bottom of this question. ...
6
votes
3answers
581 views
Print mac address to file
With a bash script, can I read the mac address of my eth0 and print it to a file?
6
votes
2answers
220 views
How can I test the current carrier state for an ethernet adapter in Linux?
In Arch Linux, how can I check if a network device (say eth0) has a carrier signal present?
4
votes
2answers
684 views
Replacing identical NIC cards creates eth1 instead of using eth0 in Ubuntu
I changed out a NIC card that was the exact same make and model. The setup process for Ubuntu 11.04 was very seemless and easy so I figured it would be smart enough to setup up the replacement card. ...
4
votes
1answer
1k views
Using the Wifi of a notebook via ethernet for another PC
I want to connect a PC to the internet via my notebook, which is connected to a WLAN.
The setup should look like the following scheme:
PC (eth0) -> Notebook (eth0) -> Notebook(wlan0) -> ...
4
votes
2answers
1k views
changing the names of network interfaces, debian wheezy
I'm trying to set a name for an interface, "ethLan" instead of eth0. Doing so also ensures that the if's name will remain consistent at every reboot and kernel.
I did find some articles in the ...
4
votes
2answers
569 views
802.3ad on FreeBSD and Linux using crossover cables?
I have setup a NFS server on FreeBSD 8.1, which will be serving one Linux client. Each box has a dual-port 1gig fiber card, and each box is directly connected to the other over this link. There is ...
3
votes
2answers
424 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 ...
3
votes
2answers
203 views
Ethernet Sniffing Embeded Device
I recently dug out some prototyping equipment from the trash and I want out figure out what the heck it is. It has a port labelled 'Ethernet' and when I plug it into a router the lights flash like its ...
3
votes
3answers
63 views
RHEL: Creating stable names for network interfaces
We have a RHEL 5.5 box with 8 interfaces. And the eth interface naming is flip flopping. Sometimes eth0 comes up on physical port 7th, and sometimes on another physical port.
We want the naming to ...
3
votes
2answers
1k views
How do I configure which ethernet connections are active on boot?
I have an unmanaged dedicated server that I administer, running CentOS. Recently when I reboot the server, I am unable to use SSH. Both times this has happened the server host has determined the issue ...
3
votes
1answer
3k 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 ...
3
votes
2answers
407 views
PPC Debian: eth0: switching to forced 10bt / 100bt
I recently installed debian on an old G4 iMac, and everything is working fine except that the console is constantly spammed with alternating
eth0: switching to forced 10bt
eth0: switching to forced ...
3
votes
2answers
430 views
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 ...
3
votes
1answer
321 views
Share Internet Connection from computer to new router
On my linux computer I have an external wlan adapter which is connected wirelessly to internet (an access point).
Now I want to connect my linux computer via ethernet cable to a new ddwrt router. This ...
3
votes
2answers
3k views
CentOS 6.3 Device eth0 does not seem to be present (Minimal non-cloned setup)
I installed CentOS 6.3 on my hardrive partition (new install...minimal install).
After successful installation, I see that eth0 was down
looked for 70-persistent-net.rules file under /etc/udev .. ...
3
votes
2answers
250 views
Network issue in vsat
In my server-client architecture, I multicast 100 MB files to many clients from server via satellite link. Network traversal is through 5 hops. I have the 10Mbps ( i.e. 1250 Kilo Byte per second ) ...
3
votes
0answers
266 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
4answers
1k views
Low Cost, 2 Ethernet Ports & Runs Linux
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 ...
2
votes
2answers
557 views
RJ-45 <-> RS-232, can I substitute the RS-232 side and abuse my Ethernet port as COM port?
We have a PCIX board (with MIPS CPU) from some vendor and it has an RJ-45 jack on the "board-side", where the cable has an RS-232 plug on the other side. The expected protocol is clearly the same as ...
2
votes
2answers
336 views
How can I configure ethernet?
I just started using linux (installed Debian) and the one thing I'm trying to do right now is have my internet working.
I connected my ethernet port but still no internet works. I googled for awhile ...
2
votes
1answer
211 views
How can I update the OUI list used for Netdiscover?
Netdiscover keeps showing a lot of "Unknown vendor" devices, when I generally can find the vendor pretty quickly via Google. Is there any way to manually update whatever OUI list Netdiscover uses?
2
votes
1answer
918 views
How can I get wireless and ethernet to work with ubuntu?
I have an acer aspire 7551 laptop running windows 7 and I've successfully used wubi to also install ubuntu (the latest release version).
Wireless works fine on windows 7, but neither wireless nor ...
2
votes
2answers
116 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 ...
2
votes
1answer
156 views
Excessive retransmissions on Ethernet
The CSMA/CA variants of Ethernet handle excessive failed transmissions due to repeated collisions by dropping the current frame and relying on upper layers for retransmissions:
After 16 attempts ...
2
votes
1answer
966 views
Cannot connect to printer hosted on a Belkin print server
I tried to tap into Belkin Home Base (model #F5L049au) print server. I want to access a printer hosted by it. I set it up as a CUPs printer with the below specifications:
Description: Via Belkin ...
2
votes
1answer
104 views
directions about customized Layer 2 implementation in linux
I have some machines running on the same network. One node is the control node which distributes traffic coming to it to the other nodes. The thing is that I want to have a custom protocol header ...
2
votes
1answer
301 views
Bond slave link up is too slow
On one of my servers I set up a bond-device consisting of an onboard network-card and an PCIe network card. (eth1 and eth5)
I set up the configugration according to man ifcfg-bonding - i.e. eth1 and ...
2
votes
1answer
390 views
Fedora 15: em1 recently dissapeared and hostapd no longer serves internet to wirelessly connected devices
I have a laptop running hostapd, phpd, and mysql. This laptop uses an Ethernet connection to connect to the internet and acts as a wireless access point for my workplace's wifi devices. After ...
2
votes
1answer
320 views
Is vnstat reporting accurate?
I'm checking the stats of a busy site that host mirror downloads. I installed vnstat on the machine and after a few days i saw the number 125.25 Mbit/s or using -ru 0 15.29 MiB/s
I'm extremely ...
2
votes
1answer
764 views
Atheros ar8151 driver for kernel 3.x (fedora 16)
Yesterday, I installed Fedora 16 and found no wireless connection available.
Then I found the ar81family driver
But it seems like it does not work with kernel 3. I changed the makefile to ignore ...
2
votes
1answer
1k views
eth0 is proxy-arping, but /proc/sys/net/ipv4/conf/eth0/proxy_arp is 0
I'm scratching my head about this question... I have a debian squeeze machine that is connected to an internal lab network. We have a lot of machines that have default proxy-arp configurations on ...
2
votes
3answers
127 views
Connecting Debian webserver to network
I am currently running a webserver with Debian 5.0.2. It has been working (more or less) fine for the past 2-3 years but recently it went down due to some power-outage. Ever since I have brought it ...
2
votes
2answers
1k views
Where could I find the ifcfg-eth0 file?
I am using RHEL6, but I could not find the Ethernet interface configuration file ifcfg-eth0 under /etc/sysconfig/network-scripts. Issuing ifconfig -a shows that eth0 does exist. Could it be that the ...
2
votes
1answer
802 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 ...
1
vote
1answer
1k views
What is the difference between virbr# and vnet#?
I am running KVM on RHEL6, and I have created several virtual machines in it. Issuing ifconfig command to the host system command line shows a list of virbr0, virbr1... and vnet0, vnet2... Are they ...
1
vote
1answer
49 views
Problem compiling a driver : “No rule to make target”
First of all I am running a CentOS 6.4 installation.
My computer is a laptop and I am trying to install the drivers for my ethernet card, because this week end I lost my ability to connect to the ...
1
vote
1answer
490 views
Display all network interfaces on Solaris
On Linux, the command mii-tool displays the list of Ethernet interfaces and other information. What equivalent command existson Solaris? My goal is to view all LAN networks that my Solaris machine is ...
1
vote
2answers
638 views
Atheros ethernet driver
I have openSUSE 11.4 installed on my HP pavilion dm4-2015dx.
The ethernet card (Attansic ethernet controler is shown in Yast's hardware info) was not recognized and after many days of googleing i ...
1
vote
1answer
27 views
Setting up network cards on FreeBSD
I just installed FreeBSD 9 on a new laptop and I'm having some trouble getting the network cards to work. Presumably the file representing the cards is in /dev, but where would the configuration files ...
1
vote
1answer
69 views
Creating an Alias to Loopback Interface with an Arbitrary Name
I have an odd problem that seems simple enough but has evaded me thus far. I am attempting to support a legacy application that has a hard-coded ethernet device name ("eth0"). This hard-coding, I am ...
1
vote
1answer
76 views
Help understanding interfaces in Backtrack
I am fairly new in UNIX and have recently installed backtrack on a VMWare box on my machine and I am trying to use DHCLIENT command but am having trouble in understanding the interfaces.
I am ...
1
vote
1answer
420 views
Network Interface Names output from ifconfig
So this has been driving me nuts for a good couple of hours, so I thought I'd ask about it here (let me know if there's a better forum for this question).
I have a CentOS Virtual Machine on ESXi. I ...
1
vote
1answer
296 views
ifconfig + FAILED from ifconfig on solaris machines
please advice - what the meaning of FAILED word from ifconfig command
Dose its mean that network from NIC isn't stable until this moment ?
Not clearly if ifconfig read network status each some mili ...
1
vote
1answer
422 views
Reducing ubuntu boot time using dmesg
The boot time is 141 seconds. Here's the most interesting parts of dmesg command:
[ 2.870498] usb 1-1.2: new high-speed USB device number 5 using ehci_hcd
[ 80.669210] ADDRCONF(NETDEV_UP): eth0: ...
1
vote
2answers
2k views
Cannot get Realtek r8168 ethernet card up
I've working on Arch Linux and in 99% of time I connect to internet by WLAN but sometimes I need to use ethernet connection, so today I see something strange. My eth0 device is down, and I can't get ...
1
vote
1answer
4k views
wired connection not working under Ubuntu 10.04
(using Ubuntu 10.04 LTS on a netbook prior to any updates) The wireless works fine, the wired connection has been tested using a Windows computer.
Choosing auto eth0 from the power manager fails.
...
1
vote
2answers
3k views
Configure a bridged Ethernet adapter in a VirtualBox guest running Scientific Linux
I installed Scientific Linux 6.2 x86 in VirtualBox on Windows 7 x64.
The adapter is
Adapter 1: Paravirtualized Network (Bridged adapter, Marvell Yukon 88E8056 PCI-E Gigabit Ethernet Controller)
...
