Skip to main content

Questions tagged [nic]

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

Filter by
Sorted by
Tagged with
1 vote
0 answers
47 views

temperature of the Broadcom 10Gb LAN controller (BCM57416) on Supermicro motherboards

I am looking for information from people with systems with Supermicro motherboards with a Broadcom 10Gb NIC controller chip (BCM57416). Specifically, I would like to find out the NIC temperature IPMI ...
cen2rocky's user avatar
0 votes
0 answers
37 views

Mixed 10Gbps/25Gpbs on Supermicro AOC-A25G-b2SM (BCM57414)

Working on installing some new Supermicro servers and they're configured with a AOC-A25G-b2SM NIC (2xSFP28 ports). Based on what we can support with our switches, we were planning to do a primary link ...
Chris's user avatar
  • 1
0 votes
0 answers
27 views

ICMP request | By Virtual NIC | no response

The Issue: I want to Understand what's going on when I'm sniffing from the host machine with Wireshark for instance packets that are coming from the VM that is bridged directly to the physical network....
Eden Refaelov's user avatar
0 votes
0 answers
98 views

1000Base Fiber Switch to 100Base Fiber NIC (Desktop PC)

Setting up an office space with some ACE Vision U6601 Desktop PCs. The current switch is a Cisco switch pushing 1000 M/bits and the PC fiber NICs only go up to 100 Full Duplex. Directly connecting the ...
landon.j's user avatar
0 votes
1 answer
113 views

No connectivity in LAN (arp table does not learn IP addresses)

enter image description hereI have a server connected with NICs as follows, 10.0.11.11/24 - no gateway required. 10.0.10.11/24 - with gateway 10.0.10.240 192.168.2.11/24 - no gateway required. When ...
Vidura Thammitage's user avatar
0 votes
1 answer
58 views

What is this internal plug on my HP Mellanox ConnectX-3 card near the activity LEDs?

I recently bought a second-hand Mellanox ConnectX-3 card for a lab setup. There seems to be an internal connector on it near the activity LEDs, which I think might be for hooking them up to a front ...
Nick T's user avatar
  • 266
-2 votes
1 answer
59 views

How do I set up multiple networks to 1 computer with 4 ethernet cables with quad-nic (IS SOMETHING POSSIBLE?)

I'm not going to act like I know what I’m doing because obviously, I don’t. Complete n00b here. So let's start with this. I have 4 networks. All 4 have their own router and switch. Mega Computer has ...
Junior Oh's user avatar
0 votes
1 answer
287 views

Can I connect a server with a 10G SFP+ port to a switch that only has 10G RJ45 ports?

All of our networking equipment is copper. I'm looking at buying a server but it just so happens to have a 10G SFP+ port and I'm unfamiliar with these. My understanding is that these are primarily ...
Mitchell Bösecke's user avatar
1 vote
2 answers
212 views

Is it possible for a NIC to send data when only the eth TX+ and TX- (eth) lines are connected?

I have a high security network that needs to send data to a less secure network. The connection must be physically unable to send data from the low security network to the high security network. I ...
Marked's user avatar
  • 13
1 vote
0 answers
472 views

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 ...
user3840019's user avatar
0 votes
0 answers
372 views

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-...
Wang's user avatar
  • 322
2 votes
0 answers
113 views

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 ...
Strags's user avatar
  • 21
1 vote
0 answers
124 views

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 ...
okrut's user avatar
  • 11
0 votes
0 answers
209 views

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 ...
imclerran's user avatar
0 votes
1 answer
637 views

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 ...
BJaz's user avatar
  • 19
2 votes
1 answer
547 views

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 ...
Vilican's user avatar
  • 129
0 votes
0 answers
92 views

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 ...
SuperZumo's user avatar
0 votes
0 answers
125 views

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 ...
Anh Phan's user avatar
0 votes
0 answers
48 views

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 ...
Nafiul Alam Fuji's user avatar
0 votes
1 answer
138 views

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, ...
JohnLBevan's user avatar
  • 1,312
0 votes
1 answer
95 views

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 ...
Eric's user avatar
  • 1
0 votes
0 answers
113 views

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 ...
Karnalta's user avatar
  • 129
0 votes
2 answers
272 views

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....
user995604's user avatar
1 vote
1 answer
2k views

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 ...
Granwille's user avatar
0 votes
1 answer
225 views

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 ...
Mihir Shah's user avatar
1 vote
1 answer
410 views

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 '...
Nafiul Alam Fuji's user avatar
2 votes
1 answer
852 views

"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-...
Ayan Mullick's user avatar
0 votes
1 answer
254 views

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? ...
MERONYX's user avatar
0 votes
1 answer
469 views

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 ...
Ryan Lyu's user avatar
  • 118
2 votes
1 answer
3k views

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 ...
Rino Bino's user avatar
  • 603
0 votes
1 answer
2k views

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 ...
Rafik's user avatar
  • 35
0 votes
1 answer
507 views

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 ...
T0XiiC's user avatar
  • 1
0 votes
2 answers
2k views

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:...
Henry's user avatar
  • 15
0 votes
1 answer
177 views

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. ...
ArisK's user avatar
  • 1
1 vote
2 answers
4k views

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 ...
Alexander Borochkin's user avatar
0 votes
0 answers
121 views

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 ...
my zhu's user avatar
  • 1
7 votes
1 answer
4k views

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 ...
CrazyRabbit's user avatar
0 votes
2 answers
262 views

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 ...
lee's user avatar
  • 11
1 vote
0 answers
58 views

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 ...
mtbftw's user avatar
  • 11
0 votes
1 answer
32 views

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 ...
Chandan Hegde's user avatar
0 votes
0 answers
135 views

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 ...
Grismar's user avatar
  • 127
0 votes
1 answer
191 views

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 ...
mimo_6's user avatar
  • 1
0 votes
1 answer
957 views

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 ...
Aris Koutsoukis's user avatar
0 votes
1 answer
271 views

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 ...
MoonHorse's user avatar
  • 107
0 votes
1 answer
802 views

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 ...
Sarah Szabo's user avatar
1 vote
1 answer
4k views

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-...
user685384's user avatar
0 votes
2 answers
194 views

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 ...
Alby's user avatar
  • 1
1 vote
2 answers
2k views

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 ...
Meni's user avatar
  • 91
0 votes
1 answer
811 views

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 ...
fernacolo's user avatar
  • 169
0 votes
1 answer
1k views

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 ...
AirPett's user avatar
  • 211

1
2 3 4 5
13