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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Hyper-V and Broadcom and Intel?

We just received our new server to begin our Hyper-V deployment. It was recommended that we get 4 NICs on the server. The server has 2 onboard BroadCom nics and 2 pci Intel Pro nics. The Broadcom ...
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2answers
584 views

One Comcast Business Gateway, One Router, Two Web Servers

I have a Comcast business account with a router and a web server (info) attached. behind the router there are multiple computers and a second web server (info) which also serves as a file server. ...
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745 views

Hyper-V multi-homed host NIC?

In Microsoft's Hyper-V virtualization engine, is it possible to have a multi-homed host NIC (i.e. with several different IP addresses) then have several guest VMs, each of which corresponds to one of ...
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2k views

iSCSI / SAN / Cluster / multiple NICs failover problem

Got a problem with NIC failover with iSCSI. Setup: A server with 3 NICs. One NIC is local network, other 2 are SAN. Using Microsoft iSCSI Initiator. A managed network switch. A QNAP SAN, connected ...
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455 views

Setting up dual NICs under Server 2008

I'm trying to determine how to set up dual NICs on my Server 2008 box (not R2). I want all web traffic on one NIC and all Hyper-V traffic on the other. Is this possible? ( I assume that it is ) ...
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164 views

connect server to server on secondary NIC

I have a CentOS box with multiple NIC's running Apache. I also have another box running RHEL that will be the MySQL server. I'm trying to use the secondary NIC on the Apache box to connect directly to ...
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4answers
978 views

How to determine which NIC data/traffic is using?

How to determine which NIC data/traffic is using? To make sure routing is correct.
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495 views

Server WAN interface periodically stops working until reboot

The setup I have a Windows Server 2003 SP2 server that is (hopefully temporarily) ghetto-hosted behind me in my office on our Comcast business connection. It has two NICs in it. The "private" NIC ...
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115 views

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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29 views

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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1answer
840 views

Xen 6.2 - NIC bonding - LACP or active/active?

I have 3 XenServer 6.2 machines with 4x 1Gb NICs. Would I be better served by: putting these in an LACP bond at the switch putting these in an active/active at the xen server leaving them separated? ...
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2answers
266 views

Need to configure 2008 server with 2 NICs on different subnets

I am working on an application that requires a 2008 server to have 2 NICs for security purposes. NIC 1 will be connected to the customer's enterprise network with a static IP and is routable. It ...
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168 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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183 views

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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1answer
266 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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111 views

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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259 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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544 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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264 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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407 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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793 views

Citrix XenServer, networking how

I am new to virtual servers, vlans. I am a programmer and have been assigned the task to make a stable storage server, i threw XenServer Free 5.6SP2 on an old box (HP ProLiant ML350 G5) set my ...
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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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2answers
319 views

What's causing the delay in my network adapter binding to the network?

I have a server that takes several minutes for the NIC to bind itself to the network upon startup (it has a statically-configured IP). This causes the WINS and Intersite Messaging services (and ...
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1answer
580 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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133 views

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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420 views

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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485 views

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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2answers
883 views

WMI and adding Multiple IP Addresses?

Is it possible, with WMI, to bind IP addresses to a NIC? I have been able to enable a static IP, but I can't seem to find any information on adding additional IPs. this code helped and after I ...
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84 views

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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2answers
7k views

Multiple IP addresses on one NIC register twice in DNS server

We've got a build server (Windows Server 2008 SP2, 64-bit) which has one NIC and two IP addresses registered to that NIC (192.168.1.30 and 192.168.1.31). The build server is registering two identical ...
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4answers
11k views

2 Nics, 2 Gateways. How to choose which NIC to use for web surfing

I have 2 NICs in my machine, and we have 2 internets services on our LAN; one is a DSL one is a partial T-1. I have one NIC with the DSL as the gateway, and the other NIC has the T-1 as the gateway. ...
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Does a separate NIC protect other components (MB, etc.) from electrical surge?

Is this true or just a trick used by hardware salesmen?
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How do I diagnose slow file transfers from NIC errors/collisions?

I recently attempted to transfer a 3 GB file to a machine on my LAN using rsync -azvP. I noticed I was only getting 50kpbs. Both switch ports are 100/full. When I do an ifconfig, here's what I get: ...
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218 views

Two NIC card with same mac address

Yes its very strange but I have got two server having same H/W MAC address. The issue which I am facing is again very strange. 1st Server is normal windows server. 2nd Server is running KVM on ...
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98 views

How to bond NIC on a virtual machine?

I'm puzzled about this process. Historically when I've setup an LACP bond on a piece of physical hardware I have to create the analogous setup on the switch. How does this work with a virtual machine ...
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Multiport NICs in servers and clusters [closed]

I wanted to know are multi-port NICs common in server systems? E.g in clustering are they used always?
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645 views

Dell PE 2850 NIC cycling - can't install latest drivers

I've just installed W2K8 R2 SP1 on a Dell poweredge 2850. The network card isn't working correctly - keeps cycling through these states: identifying, enabling, network, network cable unplugged. The ...
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585 views

Does the HP Proliant DL360 come with multiple NIC's?

Would someone be able to clarify multiple NIC cards to me, we have recently invested in a HP Proliant DL360, although do the network adapter cards come with 4 NIC's? E.g.: Networking: 2 HP NC382i ...
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85 views

Onboard Gigabit vs Add-in Server NIC [closed]

If you have server systems running high-end desktop PCs and a few running smaller SQL instances. The systems are time critical so the lower latency we can achieve the better. As it stands we don't ...
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91 views

Network adapters reliability

Can you help me with understanding of reliability of network adapters. Most of the time servers do have at least 2 NIC's bonded to provide sort of a HA for it. So in case of one NIC fails, the second ...
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252 views

NIC are not advertising Correct Speeds

I have an IBM x336 that is not advertising the proper LINK speeds. One interface is the other is not. I've tried to Force it to 1000/Full but then it just shows link down. I have confirmed the switch ...
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277 views

Using 2 NIC in ESXi 4.1

We are planning to move all our physical server into 2 ESXi box. Currently each of the server has 2 NIC. One NIC is used as public interface which has public IP, and another NIC has private IP. All ...
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30 views

IC socket on network cards?

I have been looking at network cards and I have noticed a few of them have this mysterious port on them that looks like an IC socket. I was wondering what this is used for and if it is of any ...
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1answer
90 views

Increase Network Bandwidth on Windows Server 2008 R2

I am looking after this network with around 40 clients on one Windows 2008 R2 server. These clients are connected to server via two gigabit switches (24-port dumb switches). Over the next few months ...
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1answer
40 views

If one subnet can see another does that mean that there is a bridge between two interfaces?

This might seem like kind of a dumb question, but...say for example... I have a router running OpenWRT or some Linux distro and that router or box has two interfaces (lets say for sake of example a ...
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Centos multiple NICs routing issue

I am having trouble setting up permenant routes for my network interfaces, below my config : ETH0 : 172.23.137.27 Netmask /25 - 255.255.255.128 Gateway – 192.168.126.126 ETH1 : Trunk VLAN - ...
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How do I calculate the ethernet NIC-to-NIC time to send a MTU packet (1500 bytes)? (OS-excluded) [closed]

I understand it will depend on the speed of the ethernet 10 Mbit to 100 Gbit. Given an ethernet speed, how do I calculate the time spend in the wire from NIC-to-NIC? I am assuming here that the ...
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4answers
13k views

ESXi, how do I set the IP address on NIC's?

Sorry in advance I am brand new to ESXi and VSphere 5.0. I just installed a second NIC into one of our ESXi boxes and I was wondering how I set the IP address of it. Thanks in advance!
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Configuring Static IPs on CentOS 6.2

I am a complete Linux newbie, but we have quite a few spare Dedicated Machines available right now, so I decided to setup CentOS 6.2 on one of them and start getting more familiar with it. Obviously ...
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122 views

Benefits of adding a second NIC

I have an (virtual) internal Win 2008 R2 Server as a DC and also running Exchange 2010. I have one NIC configured. However I have seen set-ups where one NIC is configured for external and another NIC ...