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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Spontaneously unmounting NFS exports and nicstat network activity

We have one server which exports two partitions which are massive (one is 61 TB, the other is 28 TB), and we have a lot of users reading and writing to these when mounted on another machine. We have ...
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165 views

networking with one NIC and access to internet and virtual machines

I have installed opennebula and I have followed this tutorial. Unfortunately I cannot ssh to the virtual machines that appear to be in a running state and already have an IP. The problem might be that ...
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259 views

can't connect 2 subnets through RRAS 2008 r2

I'm working on a project for a networking class. In VMWare Workstation, I have to set up a 2008 r2 server with DHCP reservations for 2 clients on separate subnets and have them ping each other. Here ...
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I couldn't get 2 NICs working together on Ubuntu 10.04

I've got an Ubuntu 10.04 server with this configuration: eth0: 192.168.10.XXX mask 255.255.255.0 gw 192.168.10.254 eth1: 192.168.0.XXX mask 255.255.255.0 gw 192.168.0.3 eth0 is used for incoming and ...
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262 views

Ubuntu Only Utilizes One Link in 802.3ad

I am currently using an Intel PRO/1000 PT LP Quad Port Server NIC with Ubuntu 12.04 LTS Server 64 Bit. I installed Gnome so I have a GUI. I downloaded bmon 2.0.1 to monitor the network, and right now ...
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122 views

Mirror traffic from x network card to VMware player

I have 2 Network cards and I am trying to monitor traffic going through one of them (the internet facing one), so that I can see what sites are visited the most and how much data is being used. I'v ...
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577 views

How To Upgrade Network Driver To BNX2i

we have a server with a Broadcom NetExtreme II card which supports iSCSI offloading. According to the dell documentation, we need to be running the bnx2i driver to use the iSCSI offloading engine. We ...
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bnx2 keep dropping packets

as mention, my Centos server nic keep dropping packet from time to time, (on-board Broadcom NetXtreme II) it drop packet on eth0 RX: RX packets:4343890 errors:0 dropped:5705 overruns:0 frame:0 I ...
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Can I assign a virtual interface (VPN) to a 'real' interface / NIC of my choice?

I have a small server , running MINT linux with two NICS (eth0 and eth1) and I'd like to setup the MintBox as a VPN client to connect to a web-hosted VPN server. All works wonderfully on the VPN ...
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Network card capable of capturing a tonne of packets and not dropping them?

Edit: Our server is trying to capture packets at between 500-600Mb/s, but is dropping packets 'due to kernel'. Data is being written to SSDs, and isn't bottleneck there. What things should I look ...
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166 views

CentOS: network adapter reset - error reading PHY register

I have a problem with a server. The following is written in the /var/log/messages error log: Aug 15 10:22:46 s00000000 kernel: ------------[ cut here ]------------ Aug 15 10:22:46 s00000000 ...
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105 views

Login script not running as the NIC takes too long to initialise

We're just about to roll out a bunch of Lenovo T431s's but have an odd problem with the NICs on them. Basically (from reboot) they are taking too long to initialise (i.e. the blue "swirl" on the ...
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540 views

Intel igb driver building with checkinstall

How to properly compile the latest Intel igb driver (4.1.2) with checkinstall ? When I am trying to do this I got following error: *checkinstall -D root@debian:~/igb-4.1.2/src# ...
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75 views

Added a new NIC, can't reach any devices off the interface (ubuntu)

I was wondering if anyone could help me narrow this problem I have a gateway running Ubuntu server 10.04 (LTS) and I have added a new NIC to it which is a Intel PRO 1000PT GbE, bringing the ...
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255 views

Intel Corporation 82540EP NIC and “rx_missed_errors” at 140Mbps

I have an Intel Corporation 82540EP Gigabit Ethernet Controller which uses module e1000 version 7.3.21-k8-NAPI. While it is a GigE NIC, I receive "rx_missed_errors"(ethtool -S eth0) already in case of ...
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77 views

Installing ESXi/ Hyper-V using NIC supporting iBFT

We can install ESXi to a iSCSI target if we have NIC that supports iBFT. But what I am trying to see is if we can install ESXi by booting off an iSCSI target which is a mounted ISO? How about Hyper-V ...
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215 views

Assigning two IPs to one NIC in CentOS

I have been following this method described here: http://linuxwave.blogspot.com/2010/01/setting-virtual-ip-in-centos.html To assign a virtual IP to one NIC. Basically I copied ifcfg-eth0 and makde ...
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385 views

why 5 rx queues per NIC

On my office server, the output of cat /proc/interrupts displays one tx queue and 5 rx queues. Is this due to NIC hardware capabilities or can you configure multiple receive ring buffers in linux per ...
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255 views

MAC address allocation for channel-bonded interface

I've configured Channel-bonding (on RHEL/CentOS) with with balance-alb (mode=6) option: BONDING_OPTS="mode=balance-alb miimon=100 updelay=200 downdelay=200" which is working fine and according to ...
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308 views

Remotedesktop to windows 2008 server with 2 nics

Hi I have 2 NICs on a Windows 2008 R2 Server. nic1 with ip address 192.168.2.1 with gatewaty 192.168.2.254 and nic2 with ip address 10.96.6.253 with no gateway. The windows 2008 server is connected to ...
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264 views

Dual NICs - Dual LANs

Summary: I need to setup a single PC with two NICs - to access a service on LAN 2 NIC 1 - Data network, web access. Range: 192.168.1.x Sub: 255.255.255.0 Gateway: 192.168.1.1 NIC 2 - No Web access ...
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eth0 NIC Link is Down repeating message in kernel log

I've noticed since few days ago that same repeating kind of messages occurs and I positively can say that nothing was intentionally changed (installed/uninstalled) in that period. here's sample of ...
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Very high RX errors dropped and frame in eth1 interface

I'm seeing a NIC hang-up/crash on my server and every time i check ifconfig output, it gives me very high errors, dropped and frame: $ ifconfig eth1 eth1 Link encap:Ethernet HWaddr ...
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Bonding more than 2 nics causes connection drops

I'm running CentOS 6.5. I have 3 servers with quad 1Gb nics. I'm using bonding mode 6 (tried 0 as well) running through a cisco 4948 switch. When only two network cables are attached, no issues. If ...
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Dell Equallogic SAN - 4000 series to 6000 series connectivity issues

I have a 4000 series in production with two physical NICs and a group IP. I have a 6000 series in a DR site with four physical NICs and a group IP. 4000 series NIC1: 10.0.12.2 4000 series NIC2: ...
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256 views

Do Gigabit ethernet single-mode fiber network adapters exist?

I am attempting to set up a server with a total of four single-mode fiber ports - two need to be at least 1Gb and two must be 10Gb. I have found a variety of 10Gb single-mode fiber network adapters ...
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Cannot browse HTTP to a load balanced VIP from w2k8 boxes, but can get to it from w2k3

I have a strange problem and am looking for suggestions. The environment: several VLANs on the same switch, that all talk to each other via the ASA using hairpin routing: VLAN 500 - Windows 2003 ...
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538 views

NIC Teaming , Multi-Homed, Active/Passive

I'm fairly new to NIC Teaming.. So I apologize if I’m not making any sense while describing this. I’ve, of course, set up plenty of simple Active/Active NIC teams for our servers without any issues ...
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404 views

Intel PRO/1000 PT LP Jumbo Frames in Ubuntu 12.04 LTS

I am having issues getting jumbo frames enabled in Ubuntu using an Intel PRO/1000 PT LP NIC with two bonded 1Gb lines. Following the readme that comes with the Linux driver, Ubuntu will not allow me ...
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Linux FOG Server Memory

I'm a computer tech at my high school, and our technologically-superior head just got fired. He just set up a Linux FOG server before he left, and we have to re-image all the computers in the school ...
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NLB NIC w/ Static IP permanently “Acquiring Network Address” after adding more IP's to the cluster

We have a 2 node NLB cluster. I recently added more IP's to the cluster range, after which point, the NLB NIC's on both of my nodes ended up in a permanent "acquiring network address" state. The ...
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Receive Side Scaling disabled on a NIC Team

OS: Windows 7 Pro I'm working on a HP Compaq 8000 Elite Convertible Minitower PC and I added another NIC, I configured NIC Teaming (Switch Fault Tolerance mode) and I'm getting a pop-up box that ...
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Routing requests through a VPC guest

I’m trying to route requests to specific subnets through the XP Mode VPC guest in windows 7. I have a loopback adapter on the host set to 192.168.233.1 and then a second NIC in the VPC attached to ...
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Ubuntu server - NIC suddenly loses connectivity

I'm scratching my head. I recently configured a server with two identical Intel NICs inside a DMZ. This morning at around 8:05, I successfully SSH'd in through the internal interface (via my LAN-based ...
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AR8151 eth0 heavy trouble

First I had really bad issue with network speed. There I got this good article: http://mindmapapp.blogspot.com/2012/01/use-atheros-ar8151-ethernet-card-on.html But now I have really crazy things ...
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NLB + NIC teaming

We have server HP ProLiant DL360p Gen8 with Windows Server 2012. Couple months ago I created a team NIC Teaming (use 2 network interfaces, the other 2 are disable and not connected). Also NLB ...
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Directory Listing Denied Message

Understand that this is the common error for a missing index.* in the location being pointed to by Apache, however I know it to be the case that there is an index.php in the location specified as the ...
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adding a 2nd network card to linux

I'm on linux mint. I've just installed a PCIe gigabit network card (from eBay!) into my linux machine. I've already had to follow this guy's instructions to get the onboard NIC working correctly. I ...
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Issue with Intel i350 NIC

We are frequently facing an issue where one of the network interface(Intel Ethernet Controller i350) goes down often with the kernel log having some call trace and an error saying: [202323.307358] ...
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269 views

NIC Bonding/balance-rr with Dell PowerConnect 5324

I'm trying to get NIC bonding to work with balance-rr so that three NIC ports are combined, so that instead of getting 1 Gbps we get 3 Gbps. We are doing this on two servers connected to the same ...
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Unexplained Packets being dropped

I have two servers one sending large amounts of data to the other, we are noticing that one server is sending data to the other but the receiving server is missing some of the data or packets. I am ...
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if there are 2 NIC on the same machine, can a tcp client on one NIC connect to a tcp server on the other NIC?

I use tun/tap to create a tun NIC tun0 with IP 10.10.10.2, and I have a real NIC eth0 with IP 202.112.34.49 then I run a tcp client which binds its socket to 202.112.34.49 and a tcp server binding ...
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routing internet via WLAN, but still connect to local LAN

I have 5 computers which are normally connected to an LAN, which is connected to internet access. However, rarely the internet provider has a fault and this causes the LAN to lose internet ...
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linux ethernet card ping problems?

I have a very strange problem with my ethernet card. Here is ethernet card details: description: Ethernet interface product: RTL8169 PCI Gigabit Ethernet Controller vendor: Realtek ...
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Ubuntu 12.04 LTS NIC Broadcast Multicast (Link is not up)

We have 3 Dell PowerEdge 2950 Servers. 2 x 3.2GHz 5060 Dual Core 16GB RAM 6x146GB Recently, one of the servers experienced a NIC failure so we decided to replace all the NICs on all three servers ...
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308 views

Dual Nic, one keeps dropping

I'm running windows server 2008 r2 on a dell poweredge 2850. I have 2 NICs, one is configured behind a firewall with a dhcp server on the main local LAN and another one has it's own dedicated ...
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82 views

Site stopped working after adding NIC card

My boss made a bit of blunder yesterday, he added a secondary NIC card to the a machine hosting a website so that it could be part of the local network. He also added it to the <blah>.local ...
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Driver Versions Don't Update

So I have a whitebox server running two Intel 82575EB Gigabit NICs. I tried to update them using the newest drivers (v17.0), but after update (which appears successful) the driver version shown by ...
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389 views

3 NICS on Virtual Box Running Smoothwall & /etc/network/interfaces configuration

I have a question about configuring my '/etc/network/interfaces' The setup would be just like this with one caveat. The “smoothwall machine” would be in a VirtualBox of smooth wall running on a ...
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Single NIC input Multiple NICs output in transparent mode

I have a setup where I have a router (192.168.2.1) connected to my machine's eth0 as WAN interface, this machine has eth1, eth2, eth3 and eth4 as LAN interfaces. The LAN Interfaces are connected ...