Tagged Questions

3
votes
3answers
55 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 ...
1
vote
1answer
64 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 ...
0
votes
0answers
315 views

Unable to install Atheros AR8161 Ethernet controller driver for centOS 6

I've installed CentOS 6.3. However, eth0 does not show up on ifconfig. So I figured out that I need to install alx Ethernet driver from here. Since my internet is not working, as ethernet drivers are ...
2
votes
1answer
102 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
3answers
126 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 ...
1
vote
1answer
985 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
407 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
418 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 ...
0
votes
0answers
2k views

ADDRCONF(NETDEV_UP): eth0: link is not ready

my OS (Ubuntu 12.04) started to load slowly. After I choose OS from GRUB, it takes like 50 seconds of loading to get to login screen. I google'd, that command dmesg can provide some useful output. ...
1
vote
0answers
324 views

Linux Mint: LAN “Cable not connected”, despite it is

I've just installed Linux Mint 13, 64 bit (from the CD of "c't kompakt Linux", if this matters), and came across a very unexpected problem, for which I've not found a solution with Google or searching ...
2
votes
1answer
299 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 ...
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) -> ...
3
votes
2answers
248 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
2answers
422 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 ...
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 ...
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 ...
6
votes
2answers
217 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?
8
votes
1answer
495 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 ...
1
vote
1answer
987 views

Why do I only get 100mbit on my Asus GigaX1005?

My GbNIC (Intel 82579LM, kernel 3.0 module e1000e) only connects with 100mbit although it's connected to a 1000mbit port (Asus GigaX1005) via an short (<3m) CAT6 cable. flo-nbook ~ # ethtool eth0 ...
1
vote
2answers
634 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
1k views

Debian Live - modprobe failed to bring up Broadcom ethernet interfaces

I have a Dell 710 with Quad Bcom NetExtreme 5709s. In the name of expediency, I'm trying to boot off the Squeeze live CD, but the Broadcom drivers are in non-free, so they don't come up when you ...
6
votes
3answers
575 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?
4
votes
2answers
565 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
405 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 ...