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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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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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Interrupt distribution on intel X710 NIC

I have a VPN server with Intel X710 and Xeon E5-2630 v4. Debian 10. Based on accel-ppp, pptp protocol. Single SFP interface, two vlans. Problem - interrupts are not evenly distributed across queues. ...
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Share folders with two different NIC

i have a Windows Server 2019 machine with two NICs, is it possible to share folders only on one ip address? eg. If i connect to NIC 1 IP 192.168.1.165 i want to see only "FOLDER1", else if i ...
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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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How to assign ipv6 address to the secondary vnic in oracle cloud

Running OS Ubuntu 18.4 How can i assign ipv6 address to the secondary vnic, to the primary vnic i can assign to the primary vnic and curl trough but in the secondary it not work. I assign secondary ...
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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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Getting 2g speeds on hyper-v VM through a 10g nic

I'm testing my speeds using IPERF as I've recently installed a 10G cisco switch and intel 10g NIC's on some servers to communicate with a nas server. I noticed my reads and write were awful so I've ...
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WOL on single host with multiple NICS in same subnet

apologies if this has been answered before but I have not been able to find this specific kind of scenario and I'm not sure how to filter search results for something like this. Here is my scenario, ...
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ESXi switch issue with OPNSense

I've got an issue with configuration of 6 port ESXi. I read ESXI single vSwitch with 2 physical NICS and that does not really resolve my issues. I just can't get this configuration below to work. I've ...
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the latest igb driver version

I tried to make my server NIC driver update, after ethtool -i it show Check version but the latest version on Intel website is lower: https://downloadcenter.intel.com/download/13663/Intel-Network-...
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Handle 2 routes to the same destination simultaneously

I setup on my machine 2 different routes on 2 different interfaces to reach a single destination. When I ping a machine on that destination network, the packet go through the route with the highest ...
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Can not disable autoneg via ethtool

I want to disable the auto-negotiation feature of NIC, I run the following command $sudo ethtool -s ens1f0 speed 10000 duplex full autoneg off Then I check if it takes effect via ethtool ens1f0: ...
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Azure VM, unable to connect from internet on ports configured (9089-9095)

I have created a VM on Azure with below steps:- Created VM Assigned a public static IP Created a new Virtual Network (Subnet default - (10.0.0.0/24) Did not create a NSG initially (NIC NSG was NONE - ...
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rtk8192ee wifi firmare stops loading after ifenslave setup attempt (Debian 10)

I tried setting up Mode 0 NIC bonding using ifenslave between my Ethernet and WiFi cards on Debian 10. After numerous ifconfig wls1 up/down, I was able to set up Bond0 until it stopped working. After ...
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How to direct flows to specific vf queue?

SR-IOV allows us to create a VF from PF, now I want to direct some flows to VF via Flow Director. Here is ethtool help message action N Specifies the Rx queue to send packets to, or some other ...
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Assign a dedicated NIC to a KVM guest only

My host (Ubuntu 20.04 LTS) has four NICs. I would like to give one KVM guest (Debian 10) exclusive access to one of those NICs. So I set the guest-NIC to macvtap and source mode to passthrough. And ...
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How can I configure a server with multiple IP addresses *without* using virtualization?

If I want to set up multiple IPv6 addresses on a web server, can I do this without using virtualization/VMs? How would I do this on modern Linux kernels (5.x) or Windows Server 2016/2019? Relatedly, ...
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Should a unified bare metal application suite outperform multiple VMs on the same hardware?

Assuming one single-socket Xeon D server, 8 cores, 16 threads, two 10G SFP+ interfaces, 64 GB of RAM, two SSDs... An application bundle that includes a nginx, MariaDB, some app logic, and maybe Redis. ...
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Debian 10 and Intel I350 - Interfaces disabled after boot

I have a server with an Intel i350 quad nic on the motherboard (SuperMicro X9DRi-LN4F+). This server ran in production for many years no problems (Debian 9). Recently, I moved the server to a new ...
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Routing in linux with two nics

I've been squeezing my mind with this problem since a couple of days, unfortunately I can 't find a way out. May be it's lack of theory or just a bad setup. I will appreciate a bit of help :-) ...
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Removing IP address from server takes down unrelated website

I'm working with a Windows 2008 Server running IIS. One of the websites running in IIS was migrated to another server. As a result, I shut down that site in IIS on the Windows 2008 server. There weren'...
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4 votes
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Routing issue for windows with multiple NICs

I have a routing issue on a windows box. The windows box has three NIC's with ip's: 10.87.6.27 (no gateway set) 10.87.11.27 (no gateway set) 10.87.60.51 (gateway = 10.87.60.254) When I contact a ...
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