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Questions tagged [nic]

A Network Interface Card is a computer component which connects to a physical network in order to send and receive data.

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What fiber optic network interface card do I need for a WAN connection

I'm thinking on building my own (micro-atx) router for business and personal projects at home. My question is what kind of network card do I need to receive the fiber optic connection? I'm currently using the router my ISP provides me but I want to…
Chazy Chaz
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WMI permissions for changing local IP without elevated privileges

I have implemented a tiny tool that allows one to change the IP settings of a selected Network Interface (NIC) by overwriting the values via the WMI. I've noticed that the tool can change the settings only if it has been started with "Run as…
Alexander Zwitbaum
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How does a NIC send a hardware interrupt?

Some context. A few weeks ago, a NIC was replaced on a box without much troubleshooting to find a clear resolution to the problem. A senior administrator got into a small tiff with an entry-level admin concerning hardware interrupts and ethernet…
barix
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Phantom NIC issue causing eth0/1 to drop out

We are experiencing a very strange and frustrating problem. Our company has servers here in Massachusetts, as well as in California. The issues we are seeing are only on the CA hardware. Out in CA, we have several hundred Dell R300 and Dell R310…
Brendon Martino
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So what really makes a server grade NIC?

We have a couple servers hosting Citrix VM's. We are planning on adding SAN storage to our network so that we can do the quick migration and high availability thing. The question comes up with deciding what NICs to buy for the servers. We have scads…
Detritus Maximus
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Dedicate a NIC to a Virtualbox VM

On a machine with multiple NICs, running either Windows or Linux, is it possible to dedicate a NIC to a VM such that the host won't even try to use it for itself? I suspect it isn't even possible but if it is, which OS and version and just how would…
John Gardeniers
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Is it "OK" to use a low end NIC for a dedicated heart beat between two servers?

I've got nice big server-grade NICs on my servers busy interfaces. Soon I'll be setting up a cluster that will have a dedicated heat-beat. Do I really need to use an expensive server grade NIC for this? Or will a low-end desktop NIC suffice?
Stu Thompson
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Ubuntu, two NICs but only one with internet connection

I am having issue with my Ubuntu because I am unable to use wget or access any website with my current setup. I have two NICs, enp2s0 and enp2s1. enp2s0 is connected to the internet but connected to a NAT router (IP Address: 192.168.1.2) While for…
weyhei
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When using nmcli, what is considered a device, an interface and a connection? What's the difference?

What are dependencies and relations between device, interface and connection in nmcli cmdline utility under linux? The below questions are asked in context of nmcli and networking in linux: Which can be only in 1:1 relation and which can be in…
bastiat
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How can I stop Azure from randomly replacing network cards on VMs?

Azure seems to have the habit of randomly changing the hardware configuration of virtual machines, without telling anything to the user. This is of course mentioned in the documentation, although somewhat vaguely: Can I manually assign IP addresses…
Massimo
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Centos multiple NICs routing issue

I am having trouble setting up permenant routes for my network interfaces, below my config : ETH0 : 172.23.137.27 Netmask /25 - 255.255.255.128 Gateway – 192.168.126.126 ETH1 : Trunk VLAN - VLAN ID : 305 172.21.107.123 Netmask /28 - …
L1opardo
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Finding NIC firmware version

I need to find out the firmware version of the NIC(s) on on IBM Windows Server 2008 using CMD, Powershell or by any other means.I also should note that I can't reboot the server to go to bios or use IBM Update Express
user176320
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How to improve Intel X520-DA2 10Gb NIC throughput without Jumbo packets

Here's what I have done so far: Using more Rx/Tx buffers boosts performance the most from defaults. I set RSS Queues to 4 on each adapter, and specified starting RSS CPU on the second port to something other than 0 (it's 16 on the PC that I use,…
GregC
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Why did robocopy cause my Windows 2012 server to hang last night?

I'm in the process of decommissioning an old 2003 server, which acts as a file server, and am just attempting a dry-run of migrating the file repository over to a new Windows Storage Server 2012 box. I'm using robocopy to copy over the files, and…
kafka
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Intel NIC X540-T1 non-functional in Ubuntu Server 12.04

I have installed three Intel X540-T1's in servers running Ubuntu Server 12.04, but all are non-functional, no link lights, no packets sent or received, and no connection on ip4 or ip6 whether set up as dhcp or static. Also, dmesg doesn't detect…
Jeff Carr
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