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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How to activate updated drivers in Hyper-V

I am working on getting a host setup using Hyper-V Server 2008 R2 but am running into some issues with drivers. I have been able to add the drivers via pnputil. When I check to which which drivers ...
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984 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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3answers
135 views

Where can I start to diagnose why I occasionally cannot connect to a server

I have a Dell Poweredge T310 with the default (free) NIC. I've got Ubuntu server 11.10 installed and I am running into a problem where at times I cannot connect to the server through any port. Whether ...
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4answers
16k 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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2answers
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Very odd behavior with a Realtek NIC in ESXi 5

I am experiencing a strange issue in ESXi 5. I just installed a new NIC (RTL8169, which is supported), but ESXi only recognizes it on the first reboot after the installation. So in order: Shutdown ...
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1answer
98 views

Adding Static IP's to the NIC

We are currently working on migrating a lot of new machines to our network, and my job this morning was to setup all of the IP Addresses. I worked on this all morning, and when I got back tonight I ...
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2answers
4k views

NIC Teaming with Broadcom on HyperV 2008 R2

I have a HyperV cluster made up of 3 hosts. Each host is connected to both of my Nexus 5548 switches running in an etherchannel. LACP on the switch and NIC teaming using Broadcom 802.3ad on the server ...
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1answer
180 views

2 NICs Windows 2k8 Server DHCP

Hi I have 2 NICs on my Windows 2008 R2 Server and I want to be able to have 1 NIC connected to the router (Wan) and 1 connected to a standalone switch (Lan) and act as an DHCP server. I want it to act ...
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164 views

Register a domain with NIC [closed]

I recently bought a .es domain for the purpose of creating a domain hack. I registered the domain with esreg.com (SANE Systems, apparently). My card was charged, but the domain is listed as not ...
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100 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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2answers
3k views

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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112 views

Connecting between subnets

The scene: There are two subnets Network A is 192.168.1.0/24 via router 192.168.1.1. There are two hosts, host A1 on 192.168.1.2 and A2 on 192.168.1.3 Both A1 and A2 have only one NIC, and none ...
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Create and bridge virtual network interfaces in Linux

I have a tool that replays traffic from a .pcap file and another tool that interprets that traffic. For testing purposes, I need to play traffic out one interface and have it come in another. ...
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2answers
1k views

Using DHCP with Multi-Homed NICs

I am trying to steer away from our current manual addressing system and embrace the decades-old wonder of DHCP. In our domain and even at my home network DHCP is great - I can use address reservations ...
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2answers
8k views

I'm having problems getting CentOS to recognize an Intel Ethernet card. Any suggestions please?

I have a dual-port Intel Pro/1000 (82571EB) PCIe card. I've installed in into a Dell PowerEdge 1950 running CentOS 6.2 x64. The card is detected and the kernel module is loaded, but a start-up ...
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1answer
89 views

Remove a 2nd Nic IP on a DC

In a windows 2003 DC (with DNS role) I need to remove a 2nd ip (added many years ago by precedent sysadmin and no one know why!) on a single NIC. This because the domain have a new trust with an other ...
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1answer
124 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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1answer
419 views

2 NIC's are not loading by the Ubuntu Server

I have a Server with 5 NIC's. And I have just installed Ubuntu Server 11.10 64 bit fully dist-upgraded by now (31 Jan) 3 NIC's are identical PCI-Express x4 adapters. 1 is integrated TG3 and the last ...
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637 views

MAC addresses on dual-NIC mainboards

Here's a weird problem. We've got a number of devices with dual-NIC mainboards. Some are Realtek NICs, which suck. Some are Intel e1000s, which don't. I've just noticed on 2 machines, one is an ...
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1answer
131 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 ...
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1answer
606 views

Sharing internet connection on Windows XP with 2 NIC's and seperate networks

This is the basic setup. The goal is to get Host 2 to use Host 1's second NIC to connect to the internet without using any special routing software or anything on Host 1. What I can do: Configure ...
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1answer
248 views

NIC cards for ClearOS box (or other software proxy/firewall)?

I am building a few ClearOS boxes, and am trying to use components I have available without purchasing anything (yet) if possible. I have some 3com 3C905-TX cards, a 3C SOHO-100, some 3C905B-TX ...
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3answers
1k views

Phantom NIC issue causing eth0/1 to drop out

We are experiencing a very strange and frustrating problem. Our company has servers here in Massachusetts, as well as in California. The issues we are seeing are only on the CA hardware. Out in CA, we ...
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2answers
433 views

Network outage - Mapping, Checking network, BGP, Traceroute, RIPE

At first, I'm not able to name my question properly, so this will be adjusted I recently experienced an international network gap. Mean when some part of world wide network is unavailable. I'm ...
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2answers
144 views

Is there additional risks to firewalling between VLANs on a single Dot1Q trunk, as opposed to discrete ethernet links?

I'm looking at implementing a pfSense firewall on a network, and I've a number of options when it comes to implementation. Specifically, I can either: Stick each network zone (WAN, DMZ, core) on ...
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2answers
1k views

PCI Express x1 Network Card on PCI Express x8 slot

I have a Fujitsu Primergy TX100 S2 server and I want to add more network cards. The only PCI slot is already occupied with a NIC. I have available one PCI Express x4 slot and two PCI Express x8 slots. ...
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1answer
124 views

Network issue - Very slow while RXing but TXing is fine

I am trying to transfer a 10GB file to test my network. But when I transfer from Workstation 1 to Workstation 2, it takes 8 minutes (which is fine). But from Workstation 2 to Workstation 1, the ...
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4answers
810 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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307 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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2answers
1k views

How to assign two IP addresses (one DHCP, one static) to a NIC using WMI?

Found question and great answer: WMI and adding Multiple IP Addresses? However this only explains how to add multiple static IP addresses. I am looking how to configure a dynamic (DHCP) and at least ...
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348 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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Add IP Address without Plesk [closed]

I have an dedicated unmanaged server and added a few IP addresses to it (allocated), and the only information my hosting company has provided is instructions on how to use Plesk to Add IP Addresses. ...
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2answers
1k views

Bonding/Teaming 2 NIC cards : pro and cons

I want to get your idea on bonding two NICS on a server that is connected to a single subnet with only one IP address in a Gigabit LAN enviroment. What is the pros and cons of having two teamed ...
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286 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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693 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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2answers
5k views

What is the command to flash a NIC link light?

I remember using a command line tool to flash a NIC's link light to identify it. I can't remember for the life of me what it was.
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570 views

Where to download the latest 2.4.x Linux kernel while kernel.org is down?

I need to run the pre-paleolithic (10 years old!) SuSE 7.3 under VirtualBox. (Don't ask. I just do, ok?) I managed to successfully install it. It boots. It recognized the virtual NIC (pcnet32 module) ...
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what difference do different NICs make?

I am in the process of buying a dell server hosting a database and a web application and a low volume website. I am wondering what differences do the NICs make? Dell is quoting me with a Broadcom ...
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1answer
103 views

How to configure server to use single NIC

I am developing web server (C#). How can I specify single network interface that can be used for communication with clients and restrict others? I cannot simply disable them because I might use them ...
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1answer
661 views

Trying to bridge NIC. What does this error mean?

I would like to bridge between br0 and tap0 for my OpenVPN server, but I get the error at the bottom of this post. Background The server have one physical eth0 with IP xxx.xxx.68.58. The bridge ...
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1answer
649 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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3answers
1k views

Broadcom BCM5716 Hangs on CentOS 6 Boot

I have a fresh CentOS 6 installation on a Dell R310 server with a Broadcom BCM5716. The onboard NIC is causing the boot to hang for some reason. Welcome to CentOS Linux Starting udev: udev: starting ...
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2answers
731 views

Disable PCIe device on Dell R610

I have a Dell PowerEdge R610 system sitting in a co-location facility. It has four onboard NICs and a 2-port PCIe NIC in one of the slots. I'm usually working with HP servers, so I have the ability to ...
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5answers
215 views

Break Network between two hosts without pulling Cable

I have two Linux hosts HOST1 and HOST2 connected by cross cable. How I can break the network between then without breaking the physical wire (I don't have access). If i do: HOST1# ifconfig eth0 ...
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2answers
886 views

how to add iptables rules for two NICs on CentOS(act as a gateway)

I have a machine C with two NICs, namely eth0 and eth1, with CentOS 4.9 installed on it. Also I have a machine A connecting to C through eth0 and a machine B connecting to C through eth1. Now I want ...
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223 views

ubuntu-server 2 network devices, 2 isp

Hello I have the following szenario: I have 2 ISPs behind seperate routers, and one web/ssh-server with 2 ethernet cards. I want the webserver to be reachable from both isp. I have forwarderd each ...
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487 views

machines of two subnets communicate through CentOS(with two NICs)

folks. Firstly, I really have done a lot of searching, but still couldn't find a problem which was exactly the same as mine, and I have tried some of their answers, but didn't work. Finally, I put my ...
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2answers
3k views

ESXi vswitch with 2 physical nics, does it actually use both nics?

Fairly new to ESXi, using 4.1 Has a vSwitch setup with both physical nic cards, one of them is for the public network of the host server and the other is for the private network. Without mapping one ...
3
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1answer
3k views

Can I create a virtual internal network for my virtual machines in ESXi without using a physical nic?

Using ESXi 4.1 Want my Virtual Machines to be able to communicate with each other, share files, etc. I have 2 nics that go from the server to the network (one public and one private) however these ...
3
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1answer
454 views

Does Intel vPro work via add-on NICs?

We're currently using Dell OptiPlex workstations with the Intel vPro feature. A remote location is requiring their computers be connected via fibre for security reasons. This will require us to ...