0
votes
0answers
62 views

How to configre network card on centos?

I have a fresh install of Centos on a machine with two NICs, one built-in and another one installed in PCI slot. However in the network settings I get one shown as wired connection picking up IP from ...
1
vote
1answer
28 views

adding a nic to a linux system

I've just bought an HP NC360T Dual Port Gigabit Ethernet Adapter PCI-E for use in a linux box. I can't seem to see the device on the system. I've used the lspci command to display a list of items on ...
0
votes
1answer
99 views

How to make two loopback adapters talk each other?

I have to test some java network application. Each client-app is identified by his IP. So the simpliest way to test it is to run some machines or VMs... But each instance of this application can be ...
0
votes
1answer
326 views

Unable to access localhost & Internet using one adapter in CentOs

I have the below dev. environment. Hardware:- Windows 7, 32bit, HP Laptop. Software:- CentOs 6.5 running on VirtualBox 4.3.10. In a nutshell The problem is that I can't access the internet and ...
-1
votes
1answer
128 views

Bind incoming packets to 1 interface and outgoing packets to 2nd interface?

I am have a Linux machine with 2 network interface cards, I need to use one for incoming packets, other for outgoing packets.
1
vote
0answers
72 views

Does a VirtualBox/CentOs need two adapters to work properly ?

I have a Windows 7, 32bit, HP Laptop. I have CentOs 6.5 running on VirtualBox 4.3.10. Here is my eth0 config. Code: #vi /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0 ...
0
votes
0answers
61 views

How to use netperf on specific NIC port?

I have two servers, SERVER and CLIENT and each server has its own onboard 1 GbE ports, and its own NIC with a 10 GbE port. SERVER and CLIENT are interconnected on both a 1 GbE switch (administrative ...
1
vote
0answers
309 views

Using DHCP to get multiple IP addresses on single NIC on RedHat

I am trying to obtain multiple IP addresses using the ISC dhclient supplied with Red Hat Enterprise Linux 5 in order to provide the IPs to multiple applications, which will run on separate virtual ...
1
vote
1answer
100 views

I don't have eth0 but eth1

How come I don't have eth0 but an eth1 instead? I restart service udev, like below, but my ether card is still eth1, not eth0 % service udev --full-restart * Stopping the hotplug events dispatcher ...
0
votes
0answers
88 views

Convert or add a localy installed linux distro to PXE-boot server

I have a Linux distro installed (debian) and configured in a VM. I'm looking for a way to add it to my PXE-server so that clients can boot to it (live session) Very confused at the moment, should i ...
2
votes
2answers
243 views

Ethernet to USB adapter vs USB Ethernet card?

I would like to connect two computers so that one is connected on physicall via the "standard ethernet jack" (got lost in the naming, i believe it's 8P8C) and the other will be connected to a USB ...
0
votes
1answer
120 views

Wake on LAN through PHY and unicast only works in the first ~30 seconds after pm-suspend

I'm having some trouble with Wake on LAN through PHY and unicast. I'm able to wake the system by pinging or sshing the shut down machine, but only within the first ~30 seconds. Why's that, what could ...
0
votes
1answer
471 views

Start script on network connect

I am trying to get a GNU/Linux Bash script to run as soon as a network connection is established on my Raspberry Pi. I tried following the instructions on several pages: I have tried adding my script ...
1
vote
2answers
444 views

Is it possible to wake up an ACPI S3 suspended Linux System with an SMB packet?

I want to put my Debian NAS system in supend to RAM mode (ACPI S3) after a decent period of time idling in order to save some power. I thought about putting the NIC in a mode, where it waits for ...
1
vote
3answers
101 views

Is there a way to permanently change the associations of NIC cards on a supermicro server?

There are 4 ports, eth0...eth3, and I want to reassign them so that eth0 is associated with the NIC currently listed as eth2, and eth1 to eth3. Basically swap them. It needs to be permanent and ...
2
votes
1answer
527 views

ethtool available network interface ports

# ethtool eth0 Settings for eth0: Supported ports: [ TP MII ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full Supports ...
2
votes
1answer
360 views

Kernel bypass possible with non-specialised NIC?

Is it possible to perform kernel bypass and have a NIC send data to the user space (where I will write my network stack) with no copying, without having to purchase a specialised Solarflare etc NIC?
1
vote
1answer
2k views

Two wireless NIC on RaspberryPi

I want to be able to use two wireless network adapters on my RaspberryPi running wheezy (Debian).One card is to be used to connect to the network and I want the other to run in the monitor mode. Two ...
-2
votes
1answer
294 views

How to troubleshoot network problems after fresh install of Linux?

Almost every time I install Ubuntu on any laptop there are some problems with connecting to the Internet. After the last installation neither Ethernet nor Wi-Fi is working. What would be the steps to ...
1
vote
3answers
408 views

What is the real capacity of a network device (ethtool - MiB or MB?)

MiB = MebiByte = 1024*1024 MB = MegaByte = 1000*1000 ethtool returns speed = 1000MB/s ifconfig documentation indicated it returns units of MiB How can I tell from that ...
0
votes
1answer
76 views

Find processes using a network device

How do I find which processes are using a given network interface at any given moment? I am using Fedora and Ubuntu.
0
votes
1answer
278 views

Dummy interface in an LXC guest

I am trying to create a split-horizon PPTP setup as described on my website within an LXC container. However, I need a dummy interface within the container to put the DHCP server on. Here comes the ...
0
votes
2answers
167 views

If there are 2 NICs on the same machine, can a TCP client on one NIC connect to a TCP server on the other NIC?

I use TUN/TAP to create a tun NIC tun0 with IP 10.10.10.2, and I have a real NIC eth0 with IP 202.112.34.49 Then I run a TCP client which binds its socket to 202.112.34.49 and a TCP server binding ...
0
votes
0answers
52 views

Host Not reachble on a Network Interface

I have two network interfaces on my linux system. When I select eth0 as default gateway , everything works fine. I can connect to the system from other computers, but when I select eth1 as default ...
0
votes
0answers
407 views

Libpcap Dropping Packets With Newer Intel NIC

I am migrating a packet sniffing project from a Dell PowerEdge R410 (with dual Broadcom 1Gb integrated NICs) to a Dell PowerEdge R620 (with quad Intel 1521 i350-series 1Gb daughterboard NICs). I am ...
0
votes
1answer
649 views

Lenovo IdeaPad Z580 wireless card driver for Fedora linux

I installed Fedora 17 on my Lenovo IdeaPad Z580 laptop, but the wireless card is not showing up when I do sudo iwconfig. I am quite sure that it is only a driver issue, because when I boot into ...
1
vote
2answers
87 views

RHEL NIC missing

I have a RHEL server with 4 NICS. I bound eth2 and eth3 as bond0. However, I don't know how to unbind the two NICs, so I just deleted ifcfg-bond0. Then I entered service network restart, and after ...
2
votes
1answer
774 views

Very Slow DSL (ethernet) speed [New Interesting Update]

Very Interesting and Important Update: Due to some reason I just thought to do a complete new setup and this time I decided to again have openSUSE plus Ubuntu. So I first reinstall Lubuntu and then I ...
1
vote
1answer
266 views

How to name a newly added NIC in Linux

I'd like to name a newly added NIC as eth4. How can I do that under Linux? To be specific, the distribution I use is SUSE, SP1. I guess there is a one to one mapping between the NIC hardware and the ...
1
vote
4answers
1k views

Use-cases for assigning multiple IP addresses to 1 NIC [closed]

What would be some of major use-cases in which you would want to assign multiple IP addresses to your NIC? Knowing of any standard/well-known 'gotchas' associated with each use-case would also be ...
2
votes
1answer
2k views

No interfaces defined in new Linux installs after installing BSD

A few months back, I attempted an install of PCBSD on my laptop (EDIT: Thinkpad T420). Before installation, my partitions consisted of /swap, /, and /home for an Arch Linux install, and one ...
1
vote
0answers
160 views

Linux Mint gets stuck when using wireless card “rt73usb”

I'm changing Linux distributions a lot, wishing to resolve my problems with the wireless card identified as rt73usb, like explained in this question of mine. Now I'm using Linux Mint 12. I noticed ...
0
votes
2answers
208 views

Game Server with onboard NIC. Do I need to upgrade?

I have a dedicated desktop machine that runs a linux game server that needs to handle at most a couple hundred users. I currently have a 50/50 Mbps fiber line for internet connection and am trying to ...
2
votes
1answer
187 views

Secondary NIC: what all can I do?

I was loaned a NIC which I promptly installed in my F16 workstation just to 'play' with it (using iptables and stuff). Other than forwarding packets from the new NIC to the old NIC using various ...
2
votes
1answer
20k views

How can I determine the MAC address for a NIC in CentOS without using ifconfig?

CentOS 5.5 One of my CenTOS systems recently booted with the following error: "Bringing up interface eth0: Device eth0 has difference MAC address than expected. ignoring." When I run ifconfig -a ...
0
votes
1answer
62 views

What does the starmode mean for a ethernet interface?

I find at least there are two start mode of an ethernet interface, on boot and auto. What is the difference between the two? Where I can find a formal document that covers this topic?
0
votes
1answer
162 views

What to do when you can't find how your device was registered?

Before Linux Kernel 3.0 (2.6.39) I can run the following command: # ifconfig wlan0 up Now I can't. I got an error saying that this device was not found. I've tried to unplug my usb dongle, plug and ...
1
vote
1answer
648 views

Atheros card not functioning well under WPA2

I've got a Toshiba Satellite L25-S199, and it includes an Atheros wireless NIC based on the AR2413 chipset, I believe. Currently I'm running OpenSUSE 11.4 on it, but I've previously had Xubuntu and ...
0
votes
2answers
3k views

How can I remove a network interface from being listed in Linux?

A software I use gets confused if there is irda0 (or some other uncommon device) in the ifconfig -a output. What is the easiest way of preventing that device from getting listed? I'm looking for an ...
3
votes
2answers
1k views

2 gateways 1 nic Ubuntu

Please note that this is ONE NIC and TWO Gateways Now this solution is super easy in Windows: * Connection Properties -> TCP/IP Properties -> Default Gateways -> Add (separated by metrics) I notice ...
0
votes
2answers
160 views

Is there a reason why switching between Linux and windows would cause a network adapter to stop being recognized?

I am using Linux and Windows 7 on the same machine and my on-board NIC is functional under both. However, the weirdest thing happens when I browse the internet under Linux and then return to Windows; ...
4
votes
2answers
16k views

How do you create a new network eth?

I have a machine that has eth0 and eth1, and now I want to create an eth2 and assign it some IP address. What's the command for doing this?
0
votes
1answer
1k views

Set default wireless adapter

I just acquired a Wi-Fire long-range wi-fi adapter, and I would like to test it with my Ubuntu desktop computer. However, my machine defaults to using an internal, discrete wireless card (not ...
2
votes
1answer
3k views

Multiple interfaces to one IP address?

At present, I have: a Netgear router with DHCP off at 192.168.0.1 my computer eth0 at 192.168.0.2 wlan0 at 192.168.0.2 The wlan0 interface always connects to the router, while the eth0 interface ...
2
votes
5answers
3k views

Linux will not activate wireless after device has been re-enabled

Using a Eee 900A netbook by Asus. By pressing Fn + F2, I can disable or enable the wireless chip on the netbook, a blue LED indicates the status. I've been able to connect to wireless networks just ...
1
vote
1answer
2k views

How to setup 802.11n wireless card in ubuntu

I have installed ubuntu 9.10 on my laptop. It has a 802.11n wireless card. When I boot up to ubuntu, the wireless does not work. And if I connect to a wire network within ubuntu, it works. Ubuntu ...
0
votes
2answers
209 views

Troubleshooting a network card on linux. Connected to network, given access point, no connection?

I installed the driver for my network card. iwconfig and ifconfig are all responsive to connecting to the network, I'm given an access point address. Then, I try to connect to a website and no dice. ...
0
votes
1answer
396 views

Using a buffalo wl12-pci-g54s on Debian Linux

I have a buffalo wl12-pci-g54s wireless card that I want to install in my PC running Debian. I need this so I can move the server to a better location in another room. So, is there an easy way to do ...