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 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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963 views

Two NICs, one server

I have two NICs on a fresh install of Ubuntu 10.04 LTS. Both are config'd be dhcp. Both cards are on the same lan with same gateway. everything about the cards is the same except the IPs they get, ...
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How can I use multiple NICs on Windows Server 2008 host with one static IP?

I have Windows Server 2008 running on Dell PowerEdge 1425 SC. The unit has two NICs and I want to use them in a clustered mode for maximum efficiency (throughput) to avoid bottlenecks. Do I need to ...
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548 views

Dealing with redundant Ethernet and WiFi under Windows

What happens under Windows (XP Pro SP3, specifically) when you have multiple network interfaces configured on the same subnet, like when your ethernet is plugged in and your WiFi is active at the same ...
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106 views

Remove gateway for private network on Server with 2 ethernet ports - Why

I have a server with 2 ethernet ports, use one port (eth0) for the private LAN, and a public IP from ISP is on second port (eth1). I have it working, but I'd like to know the reason why I have to ...
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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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Is it possible to produce an unfair ethernet NIC?

The ethernet MAC protocol is based on CSMA/CD, which defines an algorithm for fair collision handling: If the NIC detects a collision, it sends a jam signal and enters binary exponential backoff: ...
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Why are we having problems with multiple nics in office and production networks going to 100mbps mode?

updates and additional info 2 environments, office and production at datacenter Both environments have Cat-5e cables, a cable was replaced when it tested as bad with Broadcom's cable testing, and ...
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What difference between HP and Intel network adapter, both using an Intel controller?

For example, the network adapter HP NC360T PCI card uses the Intel 82571EB controller. So, what exactly is the difference between an Intel "fully" branded card, and a HP branded card having an Intel ...
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Broadcom Advanced Control Suite 4 on a PowerConnect 2848 making router (ASA5505) throw ARP errors when TEAMING (different MAC addresses from same IP)

For some reason the Broadcom Advanced Control Suite 4 seems to be a little buggy OR I have not configured something correctly. I have 4 Gb NICs and I team 3 of them to make a virtual adaptor... ...
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Performance Impact of adding more NIC cards to a Linux router box

What would be the impact on performance if more and more NIC cards are added to Linux box for routing traffic to different networks. Lets say i have 10 different networks and i only have a single ...
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VMWare vSphere 5: 4 pNICs for iSCSI vs. 2 pNICs

New SAN for me, never used before: it's an IBM DS3512, dual controller with a quad 1GbE NIC per controller that a client bought and needs help setting up. Hosts (x2) have 8 pNICs and while I usually ...
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vmware not getting ip on dell r620

Installed a new ESXi 5.1 on a new Dell R620 When connecting to the iDrac (Enterprise) from the dedicated iDrac connection I can see 1 NIC connected (beside the integrated jack) The problem is ...
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622 views

bonding NICs w/o switch

(This may not be possible, but I thought I'd ask just in case it is, as it will save a considerable amount of cash.) I'm building cluster of sorts that has one shared storage unit and two computing ...
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291 views

WinServer 2008R2, Two NIC's, forcing an app to use one of them

Short form question: Is there a way to tell an app to use the secondary NIC as a route even if it has a higher metric? Long form question & explanation: I have a Windows Server 2008R2 with two ...
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177 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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589 views

Intel 82576 Dual-Port Controller Teaming

Can I team two ports from the same controller? My scenario is that I have two switches on the same network for redundancy. I want to connect each NIC Port of a dual-port server to a separate switch ...
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630 views

Multiple IPs on firewall, are these virtual interfaces or what?

We have 5 static IP addresses from our ISP: XXX.XXX.XXX.180 XXX.XXX.XXX.181 XXX.XXX.XXX.182 XXX.XXX.XXX.183 XXX.XXX.XXX.184 On our firewall box, the NIC that is connected to our cable modem, ...
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Select source IP on windows server 2012 with multiple IPs on 1 NIC

I have searched a lot for a solution to this case but I couldn't find any. So, any help would be appreciated. I have a windows server 2012 with 1 NIC having 2 IPs bound to it 37.188.120.8 and ...
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ESXi 5.5 NIC teaming for Load balancing using Cisco Etherchannel

I am using Cisco 3750G stacked switch configured with etherchannel and connected to ESXi Server configured with NIC teaming; Load balancing as router based on IP Hash. Cisco Switch configuration: ( ...
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NIC beginner questions [closed]

Hi I wish to learn more about NICs. And I would really appreciate any answers or resources you could point me to! We have a small cluster at work, and I'm thinking about getting 2 to learn with at ...
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Setting up routing in CentOS 6.4 as a router/DHCP server with two nics

I am stumped about how to setup centOS 6.4 to route packets. |Local Network| -eth0- |CentOS 6.4 box| -eth1- |Internet| The centOS box has a dhcp server running. Currently it is handing out IP ...
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Internet routing doesn't work in LAN on a two NIC's (WAN + LAN) Windows Server 2008 R2

We have the following network setup: A) Modem (192.168.0.1) with DHCP disabled B) Windows Server 2008 R2 with dual NIC: B1) WAN interface (192.168.0.2) B2) LAN interface (192.168.1.2) C) Switch ...
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Get detailed network adapter information using PowerShell

Is there an alternative to Get-NetAdapterRss that can be used on Windows Server 08/03/etc.? I'm looking to query NIC information from servers with a powershell script, but cannot seem to find how to ...
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interrupt coalescing for high bandwidth packet capture?

I have an application which does packet capture from an ethernet card. Once in a while we see packets dropped (we suspect due to the buffer in the network card or kernel being overrun). I am trying ...
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Intel PRO/1000 Server NIC on Windows latency. How to measure?

Please note - this question is about latency of the card itself. Not latency of internet or anything else. Thank you for your attention on this matter. It is often said that good server NIC does make ...
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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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102 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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506 views

PCMCIA NIC with 2 ports

I have a laptop which I want to turn into a PFSense router. To do this I need a minimum of two network ports, which is fine, because I have one built in port and I can purchase a PCMCIA NIC with one ...
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Two NICs and IP routing on CentOS

I'm trying to setup a private network but I want one of the machines to connect to both this private network and another outside network via two NICs. I would like eth0 to be used for every IP ...
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NIC firmware version on my DL380 G5

I am trying to figure out what is my current NIC firmware version. If I run the latest firmware upgrade from HP, I get the following: It doesn't tell me the current version. If I try to check it ...
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202 views

Network adapter drops connection when windows starts

I have a bit of an issue that is just frustrating me. When I turn my notebook on with the network cable plugged in, the link lights above the port flash happily, until windows starts up. As soon as ...
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T5500 NIC issues

I currently have a T5500 with a Broadcom on-board NIC. System specs: Windows XP x64 SP2 12gb RAM Broadcom NetXtreme 5761 BIOS is updated to the latest - A02. I can successfully bind the ...
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Network adapter disappeared

Today I found myself in a strange situation where my Windows Server 2008r2 machine has internet connection while not showing any connections in 'network connections'. It does not show anywhere in ...
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How do I increase the ring parameters for a NIC on a Linux server

I used the ethtool utility to increase the rx and tx values for the NIC on one of our servers. I ran the following command: ethtool -g eth0 Ring parameters for eth0: Pre-set maximums: RX: ...
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282 views

Slow local area network speeds

Updated on 2014-10-09 Disclaimer This question is similar to Unexplained slow gigabit network speeds but because the latter is still unanswered after 5 years, and that I think I'm able to add more ...
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e1kexpress event log entries for constant NIC connection and reconnection

We were experiencing problems with one of our Windows 7 client applications that maintains a windows file share connection to a local server and it seemed to require lengthy application restarts ...
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281 views

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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Setting 2 IPs on Ubuntu 12.04 with two network adaptor card

There is a VPS runing ubuntu 12.04.3 server on vmware esxi 5. It has 2 valid static IPs and two network cards eth0 and eth1. but only one of the assigned ips is pingable from outside. (both ips ang ...
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151 views

Move a NIC to another PCIe slot

I have a server running OpenSuse with a 10Gbe card (Intel 82599eb) and the driver is installed and it is working correctly. I need to move the card to another slot. However, when I do so, the card ...
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How to block outgoing traffic of the mac address of one of the server's own NIC with ip tables?

i have a server with 5 nics connected to a switch, and running GNS3 (cisco router emulator). I need to block, in the server, the packets originated by the nics at layer 2 level (the nics are not ...
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How to “dedicate” a 2nd NIC correctly without provoking a storm?

Some parts / aspects of this topic have been discussed here before. Leading up to my question: eth0 is the official nic of my ubuntu 12.04-server eth1 is the "local=yes" port of bridge 'br1' ...
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Protocol moves to another ethx Suse

I have a server which has 2 nics eth0 and eth1 eth0 is used for our email traffic server. everything working fine some time later a eth1 was added for backup purposes so this new nic sends data to ...
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882 views

FTP Error 500 Illegal Port Command - PORT command sending different IP than source of request

The problem I'm experiencing is that I'm getting a "500 Illegal PORT command" Response from an FTP server when attempting to upload a file programmatically. This program is a small c# application ...
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490 views

How to configuring Ubuntu 10.04 server for multiple gateways in a simple way

I have a simple Ubuntu 10.04 server that runs a service. The system has two NIC cards each configured for separate networks. Each NIC needs a separate gateway, but when both are configured, eth1 ...
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807 views

IIS6 can't find site on local network

I have a windows 2003 server with dual NICs running IIS6. I can access everything remotely, but the internal network can't seem to find the site regardless of which IP Address I try to go to. There ...
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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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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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How to use two physical NIC's inside a Xen guest?

I'm trying to make two physical interfaces visible to a Xen machine. I followed the guide (http://idolinux.blogspot.com/2008/08/xen-add-network-bridge-for-eth1.html), and created two Xen bridges for ...
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590 views

Server NIC: Difference between IntelPro MT and PT

What's the difference between IntelPro MT and IntelPro PT server adapter cards? Would one of them be better for iSCSI? Thanks!