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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In Icinga (Nagios), how do I configure hosts with multiple IPs?

I'm setting up Icinga (Nagios fork) and I have some machines with multiple interfaces. Some services are only listening on one of them and to check them correctly, I like to know if it's possible to have multiple IP addresses configured for a single…
gertvdijk
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Broadcom BCM5716 Hangs on CentOS 6 Boot

I have a fresh CentOS 6 installation on a Dell R310 server with a Broadcom BCM5716. The onboard NIC is causing the boot to hang for some reason. Welcome to CentOS Linux Starting udev: udev: starting version 147 Boardcom NetXtreme II Gigabit Ethernet…
DJ Tarazona
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Can I create a virtual internal network for my virtual machines in ESXi without using a physical nic?

Using ESXi 4.1 Want my Virtual Machines to be able to communicate with each other, share files, etc. I have 2 nics that go from the server to the network (one public and one private) however these are real nics on real networks, can I create a…
MetaGuru
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Does Intel vPro work via add-on NICs?

We're currently using Dell OptiPlex workstations with the Intel vPro feature. A remote location is requiring their computers be connected via fibre for security reasons. This will require us to install third-party FO NICs in the workstations. My…
newmanth
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Bonding with 2 NIC's and 2 reserves?

I have a server with 4 ports (2 adapters with two ports each). I want to connect two ports to the local switch and two other ports to the external switch. This local switch has an uplink to the external switch, which has access to the net. As the…
user28362
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How to set Rx Queue = N in linux / in Qemu / KVM?

I have configured 8 multiple queues on my CentOS VM box (running on KVM). I…
Brijesh Valera
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Many dropped packets on NIC

I've noticed a very large count of dropped packets in the NICs of some of my servers. Have you seen something like this before? Any idea on what can be the problem? Below there's some information that could be relevant to diagnose this…
alemartini
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Select source IP on windows server 2012 with multiple IPs on 1 NIC

I have searched a lot for a solution to this case but I couldn't find any. So, any help would be appreciated. I have a windows server 2012 with 1 NIC having 2 IPs bound to it 37.188.120.8 and 134.213.23.146. These IPs are assigned private IPs…
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Virtual interfaces with different MAC addresses

I try to figure out how to set up two logical network interfaces (at one physical interface) with separate MAC addresses on a Linux machine. My first attempt was to use macvlan which seemed to work at first: [root@localhost ~]# ip link add link…
chwon
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"Allow the computer to turn off this device to save power" - Windows vNIC

Here's an interesting one I haven't seen on ServerFault I'd like to "discuss" based on our rule regarding a Good Subjective question. I have a ton of Windows 2008/2012 VMs in my environment running under VMWare 5.1 and 5.5 clusters. There is a…
TheCleaner
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How to disable NIC transmitter or receiver in Linux

Is it possible to disable either the tx or the rx in a NIC? I am setting up a network monitoring machine and I would like to be sure that no packet will be introduced by this machine at the network. One approach would be use some sort of netfilter…
Vinicius Tinti
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Netsh Dump missing DNS settings

I'm trying to figure out why "netsh dump" produces different scripts on 2003 versus 2008. In output below, I've used "netsh interface ip dump" to keep the length of this post reasonable. I've searched the full dump, and the DNS settings have not…
Clayton
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How common are Intel igb NIC drivers/cards, compared to Intel e1000, etc.?

I'm troubleshooting VMware ESXi host network and connectivity issues stemming from the use of Intel NICs who require the igb driver. The chipset is Intel Corporation 82576. VMware has a few documented issues with these cards, and the driver…
ewwhite
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How do I point my browser to a specific NIC on my machine

I am on a local area network that has no external access to the internet. However I have been tasked to find a way to allow certain machines to access the web (HTTP, HTTPS, etc) via a wireless card on their laptop. So my question is, is there a…
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Windows Server 2012 after restart public network become private

I have a 3 servers with Windows Server 2012. After restart one server : public network become private and private network become public. (2 NIC) I don't know how this can happen and how to fix it ? I have tried to set Network Location Awareness to…