A network interface controller (also known as a network interface card, network adapter, LAN adapter and by similar terms) is a computer hardware component that connects a computer to a computer network.

learn more… | top users | synonyms (1)

2
votes
1answer
904 views

Realtek/Intel NIC transfer speed

I have just purchased a Gigabyte GA-X58A-UD7 motherboard, and it has dual Realtek RTL8111D gigabit LAN ports. I also have an Intel PRO/1000 MT PCI gigabit network card lying around from an old desktop....
2
votes
2answers
492 views

In Virtual Box, how do you know which NIC is which from the linux command line?

I've run into a problem a few times now where I'm installing linux in a virtual machine, and all of my interfaces look like "enp0s3" or "enp0s8" ect. In one test, I was running a VM with 4 virtual ...
2
votes
1answer
1k 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 ...
2
votes
2answers
9k views

what is the difference between a host adapter and network card?

what is the difference between a host adapter and network card? I know that a netword card is the electrical circuits in the computer where you plug your ethernet cable into in order to gain internet ...
2
votes
3answers
44k views

OpenVPN, install a TAP adapter

When I try to connect to my work VPN using OpenVPN, the connection fails with the message: All TAP-Win32 adapters on this system are currently in use. Many sources suggest to look in Control Panel\...
2
votes
2answers
11k views

How do I set up the network drivers for Windows 7 on my iMac?

I installed Windows 7 32 bit on my 27" iMac OS X 10.6.6. When Windows loaded, I couldn't connect to the internet via wireless or ethernet. It appears the drivers are not correct? I did the same ...
2
votes
2answers
282 views

Is my Network Interface Card faulty?

I've got a Dell Optiplex GX240 running Windows XP, and am having network issues with it. I downloaded and installed updated drivers from DELL, but the issue is not resolved. Windows Device Manager ...
2
votes
1answer
12k views

How can I increase the ring buffer size of my NIC?

I want to increase the buffer size for network interface card to handle large concurrency. With ethtool I have set the buffer size to 4096 KB. But I want to increase more. Is that possible, and what ...
2
votes
2answers
5k views

How to use a Network adapter only for a specific Connection on Win7?

I've got several network adapter in my PC (from LAN, WLAN, VPN etc...) and what I want to accomplish is that some specific adresses use the VPN adapter, while all others use eiter LAN or WLAN. (So ...
2
votes
1answer
8k views

Do laptop docking stations have their own MAC addresses?

My laptop has an ethernet connection, and there's another on the docking station. Can I connect using both at the same time? Will they have different MAC addresses? I'm assuming the ethernet port ...
2
votes
1answer
4k views

which log file on ubuntu server is responsible for logging why network interface failed to up during boot?

Was playing with tftp and screwed up something in boot sequence. Eth2 fails to start at boot but allows to be restarted manually. Can not find error message in logs... so, which log file on ubuntu ...
2
votes
2answers
516 views

NIC stopped receiving 20% of packets

I connect to my gigabit LAN with my RTL8111C-based NIC. It's on a Gigabyte GA-P43-DS3. In the last 3 weeks I noticed that my transfer rate dropped from the usual 40-60 MB/s (using a NAS over SMB) to ...
2
votes
2answers
3k views

Connect Windows 7 to DP-300U (with attached HP 722C Printer)

I'm trying to add a new printer to Windows 7, but it cannot find it. My printer is an HP 722C attached to a DLink DP-300U network adapter. I enter the ip address of the network adapter, but Windows ...
2
votes
1answer
4k views

Why can't Fedora start my (hard wired) network?

I have a hard-wired Ethernet card/cable to my hub. I start Fedora 23 but there's no network, why? So I've checked that the card exists:- [root@localhost ~]# lspci | grep Ether 00:0b.0 Ethernet ...
2
votes
2answers
252 views

How can I *quickly* cycle the a Wifi Network Adapter in Windows 8

Before you close this as a duplicate, please read carefully. In Windows XP, when there was a problem with Wifi, you could right-click on the icon, and the context menu allowed you to disable/enable ...
2
votes
1answer
3k 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
3k 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 ...
2
votes
1answer
522 views

10 Gbps Network Card on PCIe 2.0 X8. Enough PCIe bandwidth?

Would a PCIe 2.0 X8 slot have enough bandwidth for a NIC with two 10 Gbps connections? From what I understand, each lane on a PCIe 2.0 card is good for 4 Gbps, so 8 lanes = 32 Gbps, right? Is my ...
2
votes
2answers
66 views

What is faster for multimedia performance? Leaving a NIC to do checksums or the CPU?

I noticed a NIC from Realtek has an option to "offload" some of the CPU work for checksums onto itself. However, this has some - I would say - humorous effects on opinions of people on the web: Some ...
2
votes
6answers
1k views

On a switched network, why do unicast packets not addressed to me reach my NIC when I'm in promiscuous mode?

When I'm connected to a switch, the switch knows which MAC address belongs to which port. So even when I'm in promiscuous mode, why do I receive unicast packets that are addressed to other MAC ...
2
votes
1answer
318 views

Onboard NIC picks wrong IRQ on startup

I am dealing with an older PC with Windows XP. Someone recently selected "Load Optimized Defaults" from BIOS and now tiny little problems have emerged. One of the problems is that the Ethernet NIC ...
2
votes
4answers
1k views

CPU load, USB connection vs. NIC

In general, and understanding the answer may vary by manufacturer and model (and driver, and...), in consumer-grade workstations with integrated NICs, does the NIC rely on the CPU for a lot of help (...
2
votes
1answer
207 views

Conflicts between 2 NICs

I have an HP server (Windows Server 2003) with 2 external NICs (couldn't get the builtin NIC to work). One is for an internal network of 4 PCs and the other is for part of an Internet-facing ...
2
votes
1answer
2k views

Internet Connection not working - USB LAN connection - from particular modem

I am trying to fix Internet connection on a friends Dell inspiron 1720 with XP service pack 3. It has an integrated network card that stopped working, after powering down/up the modem still didnt ...
2
votes
0answers
29 views

LAN connection drop every couple of minute

I have a problem related to my LAN. It drop every couple of minutes, only for my PC, so it's not network issues (wired), but PC issue. Winx64 8.1 Pro. ASUS p9x79 motherboard. (I use integrated ...
2
votes
0answers
216 views

Computer won't boot with Intel 10Gb NIC installed

I'm attempting to install an Intel X520-DA2 10Gb converged network adapter in my computer and the machine will not boot while the card is installed. The computer powers on, but the BIOS splash screen ...
2
votes
1answer
506 views

Can't added back my client for microsoft networks in Windows 10

I can't open network shared folders. Got to looking at my NIC properties, and I found that I was missing everything buy IPv4 and IPv6. So I started to try to add back to client, and protocol. I can't ...
2
votes
1answer
648 views

(Too) Many network adapters, why?

As shown in the image, I have VMware and Juniper Network installed, but there are still too many TAP-Windows Adapter or TAP-Win32 Adapter. What are these connections? How can I remove these?
2
votes
0answers
740 views

How can I tell if my wired ethernet connection is using 802.1X authentication on Windows 7?

From a command prompt (or a script) I'd like to be able to query the wired interface to determine if it has succesfully established an 802.1X connection, or if it has fallen back to unauthenticated ...
2
votes
0answers
2k views

Trouble setting up more than 4 network adapters in VirtualBox (XP Guest)

I've been trying to setup the 8 network adapters that VirtualBox is supposed to support, through the command line. I need them as bridged networks (because I use them to forward ports from a server ...
2
votes
2answers
2k views

how to remove obsolete device and network entries? Device manager “uninstall” option has no effect

I am trying to remove a few "obsolete" things which annoy me (because I like to have everything cleen, working and not interferring with each other, fresh, etc..). I tried looking for solutions ...
2
votes
2answers
4k views

Can't get hostednetwork started in Windows 8 x64

OS: Windows 8 x64. Mobo: ASUS P8Z77-V Deluxe. I can't start an Access Point with my computer. I tried everything. I tried netsh wlan commands from cmd (with Admin privileges) and it returns the ...
2
votes
1answer
518 views

PC flooding & crashing network switch only after it's shutdown

I discovered this problem because EVERY SINGLE TIME I left the house my Internet connection would go down and I would not be able to remotely access my netowrk. I installed Windows 8.1 RTM on my ...
2
votes
0answers
143 views

What could be causing two different laptops both with Wireless-N adapters to have very different speeds?

My dad recently bought a Dell XPS 14 laptop that had an integrated Intel(R) Centrino(R) Advanced-N 6235 wireless adapter, but it appears to be known to drop connections a lot. He'll suddenly get ...
2
votes
0answers
2k views

Prefer WiFi over Ethernet

I want to use my Ethernet power line adapter in order to use Wake on Lan for my desktop PC. However, once it has booted into Windows, I want it to use my WiFi by default, as the powerline adapters ...
2
votes
0answers
4k views

How to upgrade Intel(R) 82567V-2 Gigabit Network Connection Drivers for Windows 7 64?

Problem When I go to Device Manager, under Network adapters I have an Intel(R) 82567V-2 Gigabit Network Connection adapter that has a yellow exclamation point. I am trying to upgrade its drivers but ...
2
votes
1answer
703 views

Ubuntu: How to get wireless lan and 10/100 running simultaneously?

I am running Ubuntu 10.10 on a Dell Inspiron 6400. I am able to get 10/100 Ethernet card and Wireless Lan working independently. Ethernet -> eth0 Wireless Lan -> eth1. If I restart/reboot my eth0 ...
2
votes
1answer
4k views

Updated Win XP to 7: network adapter driver issue

I updated Windows XP on my old laptop to Windows 7. After installing I tried to open internet connection but Win 7 says that it cannot find network adapter because of a missing driver. I tried to find ...
2
votes
2answers
529 views

Weird connectivity issue wtih USB Wifi stick

I'm setting up two PCs, and I've been having massive troubles getting a USB wireless dongle working. I have two Sony VAIOs (Windows XP, SP2) that I found second-hand, and since they will be in a ...
2
votes
2answers
20k views

My internet speed wont run at 1.0 Gbps on my Realtek PCIe Family Controller

I have an asus Gigabit Router and a gigabit NIC (Realtek PCIe GBE Family Controller) witch is running at 100Mbps rather than 1000Mbps (1.0 Gbps). When I use an old laptop on the same Ethernet cable(...
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 ...
1
vote
2answers
456 views

How to send to the “loopback interface”?

Does it mean the same as send to localhost ?
1
vote
3answers
1k views

Disable wireless light?

Is there any way (program, registry key, etc.) that I could disable the little light that turns on whenever WiFi is enabled? I would still like to have WiFi enabled, it's just that I want the light to ...
1
vote
2answers
2k views

Network card three-pin connector

I've got an Asus NX1101 gigabit network card. It has a white connector with three pins. What is it for?
1
vote
2answers
3k views

Change MAC address of Intel(R) Dual Band Wireless-AC 7260

I tried to follow the instructions here, but my card doesn't seem to have that option. Is there another way to do this?
1
vote
3answers
4k views

How can I disable internet for a specific interface in Windows 7?

I have two NICs on my machine, one which connects to my network and has my internet connection. The other connects to a buddy next doors network with his internet connection. I don't want Windows ...
1
vote
1answer
887 views

My network adapters can't detect 802.11a radio wifi

I have two adapters, one has the Atheros AR9002WB-1NG and the other is a LAN USB Adapter #4. For some reason or the other they both can't detect 802.11a connections. Can someone explain this to me?
1
vote
4answers
5k views

Realtek NIC running at 100Mb/s rather than 1000Mb/s

My Realtek NIC in my Windows Home Server (essentially w2k3) box refuses to run at 1000Mb/s even if I change the driver settings from Auto Negotion to 1000Mb/s full duplex. I've installed the latest ...
1
vote
4answers
4k views

Wireless USB adapter with OS X support? [closed]

I haven't been able to locate any other wireless USB adapters with OS X support. It should rather be able to handle 108 Mbit/s or higher. Any suggestions? Edit: As I'm not a Mac user, I totally ...
1
vote
2answers
168 views

USB 3.0 to 1Gbit adapter is limited to 100Mbit

I am using “Cable Matters® SuperSpeed USB 3.0 to RJ45 Gigabit Ethernet Network Adapter” plugged into USB 3.0 port of Lenovo U410 laptop (Windows 8.0) When speed tested on speedtest.net, it only shows ...