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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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In Ubuntu, ensure that the same NIC gets assigned the same interface each time it comes up

I'm running an Ubuntu 9.10 server that has multiple NICs in it. I'd like to make sure that each time the kernel boots up, the NIC with MAC address 01:23:45:67:89:ab gets assigned to eth0 and the one with MAC address ba:98:76:54:32:10 gets assigned…
Lorin Hochstein
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Debain 10 - Installing kernel 5 from backports

I tried to install kernel 5.x from backports in a frsh installed debian 10 and I failed because I have a 10G NIC: echo deb http://deb.debian.org/debian buster-backports main contrib non-free > /etc/apt/sources.list.d/buster-backports.list apt-get…
Janning
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Efficient parallel file transfer between two hosts using mutliple 10GbE NIC ports

I need to regularly transfer large amounts (several TBs) of video files between two servers on a 10G network. I want to decrease the overall time it takes to finish the job. I am running CentOS7. I have two servers (A and B) each having a 10GbE card…
swami
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Communicating with identical IP addresses on many distinct networks

I would like to be able to connect to a small group of networked hardware (let's call it a Rack) via a switch and a NIC in a Windows 10 Pro computer. The system hardware has fixed 192.168.0.x addresses and they are accessed by a computer's browser…
Brian Peters
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Load balancing multiple NICs on single machine presenting a virtual IP

I've inherited a network setup, where the NFS/Samba linux RAID server ("Ubuntu 14.04.5 LTS") is serving everything over one NIC. As a result, the 1Gb network bandwidth is saturated. Unfortunately, the entire subnet attaches to this server via it's…
BurningKrome
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Uninstall TCP/IPv4 (Server 2016)

In Microsoft Windows Server 2016 Datacenter there is a properties window for network interfaces, inside that properties window there are several checkboxes that control protocols. (Internet Protocol Version 4 (TCP/IPv4) being one of them). On…
UpTide
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How to specify a NIC number in virsh/kvm?

Hoping I can get some help here. I am using the virt-clone command to get an image of VyOS (open source linux router). The clone works fine but when I copy the image to another KVM host and install it the NIC card number changes. ports eth0 and…
Cade Nelson
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ESXi VMs randomly lose network on reboot; only resolution to pull NICs and reassign new NIC driver with static MAC

We have one ESXi server (HP-ESXi-6.0.0 build-2492585) that has multiple VMs on it that have exhibited the following behavior: When the VM is rebooted it will occasionally just lose all network connectivity. Access the command line of the VM from…
Sam K
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What is the term for assigning multiple IP addresses to single NIC within the same network?

I've been looking for the term used to define the process of assigning multiple IP addresses to single IP address. A similar term that I found so far is Multihoming but, this isn't quite what I'm looking for. According to Wikipedia Multihoming is…
7_R3X
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Why does my Realtek gigabit NIC not advertise 1000Mbit mode?

I currently have a NAS (openmediavault based on debian) with a Realtek gigabit NIC (ASRock Q1900-ITX on-board LAN), but it won't advertise that it is gigabit-capable. ethtool eth0 gives the following output: Settings for eth0: Supported ports: […
RenWal
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when should I raise an alarm if I see dropped packets ( packet_in or packet_out)

I am trying to create a simple anomaly alarm detection by looking at the KPI of my Linux servers. I was wondering when should I flag an alarm if see dropped packets ( both packet_in and/or packet_out). If I take a percentage total packets…
sunny
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NIC teaming on Windows 7

My understanding is that NIC teaming isn't natively supported on Windows 7 OS?! Is there a way to do it using some third-party tool? What are your experiences?
Sylca
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Cobbler and PXE

I have successfully installed a Cobbler server in virtualized Centos in a ESXi, so I can provide automated installation for a small bare-metal cluster I need to set up. There is a black boxed DHCP and DNS set up in my company I can't manage nor…
Navarro
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Choosing gateway based on Source IP in Windows

So here is the scenario I have one NIC configured with two ips and two gateways for two diff networks. Consider the gateway/subnet are 192.168.0.1/24 and 192.168.1.1/24. If connection is initiated from my NIC IP 192.168.0.100 it needs to go through…
Siva R
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what are the memory impacts of increasing a NIC's ring buffer?

What impact (if any) does NIC ring buffer tuning (e.g. via ethtool -G eth0 …) have on system memory utilization? For example, does increasing the ring buffer consume more RAM? And if so, how much? Or is the memory required for the "maximum" value…
RubyTuesdayDONO
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