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 effects performance of a tun/tap or a virtual network interface?
I know what a tun/tap device does in linux.
if I create a new tun interface with only a name and assigning an IP address to it, and leave other settings as default, like this:
sudo tunctl -t tun0
sudo ...
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How can I reattach the PCI device when fell off the bus with `unknown header type 7f`
Recently my device experience network problem from time to time.
In the end, I found one of the NIC may have some issue when using the r8169 driver and recent kernel updates: 6.0->6.2
I try to re-...
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Loading an eBPF program causes IRQ affinities to be modified - (ixgbe driver)
I am working on an eBPF/XDP application running on a server with Intel 10G X550T NICs, using the ixgbe driver.
I need precise control over how the work is distributed between cores, so I'm disabling ...
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Network Card Flow Bifurcation for DPDK
I am trying to set up Flow Bifurcation. The idea is to have udp traffic from chosen address / port pairs handled by DPDK and the rest of the traffic going through the kernel network stack.
The system ...
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After setting manual ip address with network manager cli, ssh connection closed and no longer accessible
Context
I have been trying to set my docker containers to each use a separate ip address, rather than opening multiple ports on the same ip. My system (Debian Bullseye) uses Network Manager to manage ...
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NIC Bonding Rocky Linux 8
Since teaming is going to be deprecated, Red hat suggested to use bonding instead, however bonding in the past had the limitation of being able to bond two network cards only, which was not the case ...
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Unable to establish link between Mikrotik router and Mellanox NIC
I am trying to establish a 25 GbE link between Mikrotik CCR2004-1G-12S+2XS router and a server running Windows Server 2022 with Mellanox NIC (MCX512A-ADAT).
For cabling, I tried using the official ...
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Assign an IP to nic team server 2019
How do I assign my host an IP when all my nics have been used in a NIC Team and I've used that Teamed nic to create a virtual switch for hyper-v?
They are setup in a LACP Dynamic mode.
I've applied an ...
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Number of receiving queues is double the number of cores of my server?
I'm using Mellanox ConnectX-5 100 GB NIC, Linux kernel 5.15 and my server has 32 cores (SMT disabled). But in the /sys/net//queues, the number of rx queues is 64, which is double the number of cores ...
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How to really make sure that my server has DPDK compatible NIC
How to make sure that my server has DPDk compatible NIC ??
I know that I can download dpdk first and then by running ./dpdk-devbind.py from usertools folder can show me the list of NICs using dpdk ...
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Low cost TCP listener for Azure
We've been going through the process of migrating VMs from our data centres into Azure.
When migrating, one of the gotchas is networking rules; i.e. there are NSGs, hardware firewalls, OS firewalls, ...
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ESXi with 1 vSwitch using multiple teamed NICs each connected on a seperate physical switch for resilience/redundancy
I've read many posts (even from vmware) saying that in ESXi, NICs teamed in a vSwitch should all be connected to the same physical switch.
I found nothing about what I am describing below and in my ...
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CentOS 9 KVM : Guest VM NIC not on 10Gbps
I have a CentOS KVM host with a traditionnal 1Gbps NIC for general network and a Intel NC522SFP NIC to allow 10Gbps transfer with my computer.
I am facing a problem that I can't solve, I am on it ...
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Missing KVM nic model pcnet
I'm working on migrating a virtual machine from a centos6 server running qemu-kvm version 0.12.1 (qemu-kvm-0.12.1.2-2.503.el6_9.6) to an AlmaLinux8 server running qemu-kvm version 6.2.0 (qemu-kvm-6.2....
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How to configure 2 x NIC with each having their own gateway?
I am going to give a brief unrelated explanation first to make sense of my question:
I have 3 Linux boxes with each having 2 x NICs, 1 for the WAN interface and 1 for the LAN interface. Each Linux box ...
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Use of dual-port NIC
I was wondering, what is the purpose of a dual-port NIC on a blade compute unit, in the context of a datacenter rack, like which of these configurations is more in line with modern datacenter ...
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Is it possible to use DPDK in a server with single NIC?
I have a a server with single NIC which has 4 pci ports. I already tried DPDK binding so before binding "dpdk-devbind.py -s" returns this :
Network devices using kernel driver
0000:01:00.0 '...
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"Advanced network settings > Data usage" statistics using PowerShell
How can one get the Advanced network settings > Data usage statistics in Windows 11 using PowerShell?
I couldn't figure out how to get the total data consumption per process using Get-...
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use server NIC on an pc instead of pc NIC?
I want to know if I can use a "server NIC" which is PCIe (like HP server NICs) and install that on my desktop pc PCIe slot and have more features and also more ethernet ports to work with? ...
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Is the network interface card(NIC) prerequisite of IP addresses?
Here is the command to assign IP address to an interface for Linux server.
ip addr add ADDRESS dev IFNAME
Where IFNAME is the interface name and ADDRESS is the IP address you want to assign to the ...
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What controls the NIC naming convention after fresh Ubuntu 20.04 install?
This is a fresh install Ubuntu server 20.04.04 system. I'm using networkd and netplan to configure networking. I did not do any custom install steps, just loaded the .iso and installed Ubuntu server ...
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Checking if NIC controller has SR-iov capability
I'm trying to use SR-IOV with openstack, and in order to check if the NIC available on my servers support this technolony I did the following:
(venv) [root@controller share]# lshw -c network -businfo
...
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How to set up 20 IP's from 2 different Subnets / 2 Gateways on 1 Interface? - Debian 10
I'm trying to figure out a way to get my networking.service to work properly, so networking service restarts work.
How do I setup those 20 IP'S with 2 different Gateways but only 1 NIC? With 2 NIC's I ...
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Onboard ethernet versus Intel NIC
I would need some recommendation about the benefits of using a dedicated Intel Ethernet card versus simply using the integrated Ethernet of the motherboard.
The typical use case would be the following:...
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DELL VRTX - M620 Blade - Both NICs "Unidentified Network"
I have a DELL VRTX with two M620 Blades. I have an issue with one of the Blades. Both NICs come up with "Unidentified network". I got the server 2.5 years ago and run Hyper-V on the Blades. ...
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Bind/Unbind PCI device on the Ubuntu host
I have to NIC devices on the host:
# list Ethernet PCI devices to find out names
lspci -nn | grep Ethernet
# 04:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI ...
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VF in the same PF cannot obtain the other VF's egress
I generate 3 VFs in a PF using SR_IOV. Then I use ip link to set the VFs trust on, open the promisc mode and send pkts from VF0. But VF1 and VF2 cannot obtain the egress from VF0, the pkts go through ...
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Why NIC ring parameters are not pre-set at their Hardware max capabilities?
Check the NIC ring buffer:
# ethtool -g eth0
Ring parameters for eth0:
Pre-set maximums:
RX: 4096
RX Mini: 0
RX Jumbo: 0
TX: 4096
Current hardware settings:
RX: 256
RX ...
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Why does facebook only have 2 IP addresses? [closed]
In the process of setting up DNS for my own website I got curious about looking up a large company's DNS record. I chose facebook.com and used dnschecker.org to view their dns record.
Ignoring AAAA ...
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NIC ports going offline just by touching the cables slightly
A while ago we discovered an issue with most of our NICs in the data center - touching the cables just leads to the ports of the NICs going offline for a couple of seconds. All the NICs are Broadcom ...
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Does Throughput calculated adds up using multiple (all active) physical adaptor
I had a network adaptor of speed 20Gbps. By stressing this adaptor using one of benchmarking tools (netperf is the tool which I used), I was able to get ~18Gbps which is well accepted.
Now, after ...
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Why would a NIC on CentOS 7, attached to a Dell N2048P switch, only get a carrier when plugged in after boot?
My situation:
I have a new machine, with two NICs (Intel Corporation Intel(R) Ethernet Controller I225-LM (rev 02), according to lspci), but only one is connected.
It's connected into a larger ...
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QLogic Fiber Card not working with HYVE-Zeus Server
I have a QLogic QLE2564 Fiber Card that doesn’t seem to be working with my server. I am running windows server 2019 on a Hyve Zeus V1 with a supermicro X9DRD-LF motherboard. When installed, the card ...
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Network interface naming
Hello I would like to know how the kernel is naming the network interfaces. I have a automated installation for Rhel with predefined network interface names for the dedicated hardware. I would like to ...
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In Azure, how to prevent a user create a Network Interface Card but not modify it?
I want to give a specific RBAC to a user so that he can create a NIC but not to modify. As a matter of fact, what it is aimed is that he shouldn't have permission to change the dynamic ip to static ip ...
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IP Configuration for a 10G Direct Link via NIC?
I'm interested in setting up my 10G NIC, but am not sure 100% how to (OS: Manjaro KDE).
The driver is detected:
[manjaro manjaro]# inxi -n
Network: Device-1: MYRICOM Myri-10G Dual-Protocol NIC ...
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ixgbe eth0: initiating reset due to tx timeout and ixgbe eth0: Reset adapter
Server interfaces are flapping sometimes. It happens randomly. We are getting below logs in dmesg and similar logs are being captured in syslog as well.
OS:
OS-Debian GNU/Linux 9 (stretch)
4.9.0-12-...
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OpenBSD NIC Cards Not Configured (Kernel Edit)
I have recently installed OpenBSD v6.8 on a SuperMicro server. During the initial installation I couldn't setup the NIC cards because I didn't have any IP Information. I assume this setup skip caused ...
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nic bonding very slow
I have 2 dl380 g9 servers which feature 2 nics with 4 ports each running debian buster.
I have connected 7x 0.50m cat6e patch cables directly server-to-server and set the /etc/network/interfaces on ...
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Simulate network reset or failure in Windows
I have to check if my server application can recover from transient network failures. The application listens on some ports and is a client to backend services. I would like to run some command or ...
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Is it possible to update HP/Intel NIC firmware?
Is it possible / how to update the firmware (EEPROM image) of Intel Gigabit ethernet cards?
I have multiple HP NC365T NICs based on the Intel Corporation 82580 Gigabit Network Connection. Some of them ...
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TCP checksum errors between linux apps and NICs
I'm writing an internet application and I'm at the stage of crafting my own TCP packets. Except there is a major problem. According to the TCPDUMP utility in linux, every tcp packet that I send out ...
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Dell server with NIC that won't show link up
I have a dell server (PowerEdge R330) and I have just tried to liven up the second on board NIC. idrac says it is connected as does poking into the lifecycle setup on boot but ethtool says it isn't ...
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What is 25gb ethernet good for? [closed]
I've come across listings for 25gb NIC cards online, from various companies including Intel, Mellanox, and Broadcom. Can someone explain what these are for? Clearly the bandwidth these cards can ...
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10 NICs in 1U box - possible?
I am looking for a device with 10 NICs in one 1U box. The CPU can be anything even a microcontroller as long as it can process TCP packets. I would prefer a sort of Linux on it but is open to other ...
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2 IP addresses - 1 NIC or 2 NICs
I have tried searching for an answer to this, but to no avail.
What is considered a best practice in a scenario, where you would need to add a 2nd IP address, from a different address range to a ...
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WiFi adapter is delaying packets when low throughput
I was testing a WebSocket connection when I noticed jitter; some TCP packets were getting delayed. So I started pinging the destination. As soon as I did that the TCP packets were no longer getting ...
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Let Debian Stretch Webserver respond on both nics
I got one webserver with two nics in individual subnets 192.168.188.x and 192.168.198.x. This webserver is connected to 2 different routers (192.168.188.1 and 192.168.198.1) and via Portforwarding an ...
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Windows server SMB instances
Is it possible to setup 2 instances of SMB with build-in Windows SMB?
For example: folders A, B, C and D are need to be shared. Server has 2 NICs. Is it possible to do that folder A and B is ...
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How to Install (nic) drivers on TrueNAS
How can one update a network card driver on TrueNAS 12.0?
My nic is on the motherboard directly it's a Intel Motherboard DH55HC, the NIC is 82578DC gigabit enabled.
I've found the driver directly at ...
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