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 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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264 views

Why have a server with 6 NICs [closed]

So we are using a pretty powerful server at work, a Dell PowerEdge R710 Server, which comes with 6 1GB NICs. I've searched and thought a lot but am hard pressed as to why one would want a server with ...
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230 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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Can I have 2Gbit over 1Gbit Nics [closed]

So this really baffles me. Apparently because 1Gbit can transmit data in both directions simultaneously it should be possible to get 2Gbit of data transfer on a single NIC (1Gbit flow seend and 1Gbit ...
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244 views

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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How to use ESXi for testing physical NICs?

I am developing NICs and NIC drivers. My NICs have very distinct behavior : they have custom data rate (10/100/1000/10000/14000/18000), and they have their own drivers. I would like to do QoS tests, ...
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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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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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Why is ethtool not showing me all the properties for a NIC?

CentOS 5.8 | VMWare ESX 5.1 When I run ethtool eth0 I see the following: [root@foo ~]# ethtool eth0 Settings for eth0: Current message level: 0x00000007 (7) Link detected: yes ...
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163 views

connecting to server with multiple nics in other vlan

I'm sorry to be unclear... I will try to rephrase the problem. I work in a school as IT-administrator and I'm not a specialist, but try to make the best out of it. I hope you guys have a little ...
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Intel NIC X540-T1 non-functional in Ubuntu Server 12.04

I have installed three Intel X540-T1's in servers running Ubuntu Server 12.04, but all are non-functional, no link lights, no packets sent or received, and no connection on ip4 or ip6 whether set up ...
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3k views

Assign individual NIC to KVM guest

I have a server with 6 NICs installed and is running Ubuntu 12.04LTS. I want to setup 4 guest VMs using kvm. Now I want to assign 2 NICs for the host(1 Public IP and 1 private IP), and 1 NIC each to 4 ...
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368 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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130 views

What is the fastest way to connect two machines for a ping-pong test? [closed]

I need to do a latency test between two machines, basically a ping-pong packet test. I wonder what is the fastest connection I can have between those two machines. I imagine my options are: Ethernet ...
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123 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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How to configure 2 NICs with 2 different gateways?

I have a server with 3 NICs running RHEL6. eth0 is connected to the intranet. eth1 is connected to the Operations and Maintenance Network eth2 is connected to an automated backup network (doesnt ...
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124 views

Two network cards latency

I'm trying to setup a network architecture where one network is a low-latency low-bandwidth tcp control system (GBit), the other is a high-bandwidth udp (maybe tcp) network that could get saturated ...
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How do I rename a NIC: eth2 -> eth1

I've installed a new NIC. It shows up as eth2. I'd like it to be eth1. How I can do this?
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Dedicating Network Adapters

I am looking for some clear instructions (a blog or something similar) on how one would go about setting up a dual network adapter in such a way so that: One network adapter is used for user ...
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2k views

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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290 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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In Icinga (Nagios), how do I configure hosts with multiple IPs?

I'm setting up Icinga (Nagios fork) and I have some machines with multiple interfaces. Some services are only listening on one of them and to check them correctly, I like to know if it's possible to ...
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Cisco SG 300-28P PoE switch appears to have damaged my domain server's network IF

I just replaced the old HP ProCurve switch with a new Cisco SG 300-28P managed switch. It has PoE on all ports. Everything works, except for my domain server that went offline and the network ...
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774 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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445 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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97 views

Impact of Traffic through the first NIC on the second NIC

I have two NICs on a RHEL 6 server. They are both set at 1GB/sec full duplex. The first NIC has lots of small (< 100 byte) TCP socket writes. The second NIC is used to receive a 50 MB/sec TCP input ...
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725 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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197 views

2008 Server 2 NICS Unable to maintain routing

I have two Windows 2008 Servers. One is a domain controller and the other is a member of the domain. The domain member machine has 2 NICs, one for internet facing traffic and the other for private ...
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304 views

Setup two NICs, one public and one private

I have two servers in a datacenter, both running Windows Server 2008 R2. Both of these servers have 2 NICs. I am trying to setup one NIC to be used for public access and the other for a private ...
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575 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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Creating two networks

I'm setting up two different networks at our office. One is to manage the internet connection, and the other one is to connect to a local server. I believe I should be using a different IP range to ...
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multiple physical interfaces with IPs on the same subnet

I have a linux box with 9 NICs on it, and I want eight of them to have unique addresses on the same subnet, e.g.: ifconfig eth1 192.168.123.1 netmask 255.255.0.0 ifconfig eth2 192.168.123.2 netmask ...
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PCIe x8 NIC in PCIe x16 slot

I have a motherboard with only one x16 PCIe slot and no x8 slots. I am buying a NIC with very specific configuration, but it is available for x8 slots only. Can I plug a x8 card in a x16 slot? I have ...
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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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524 views

How do I setup a NIC for outgoing connections and the other to serve my Squid proxy?

I have an internal network (192.168.2.0/24) that I'm supposed to connect to a proxy. I've already installed and test(with a little traffic) an Squid 3 cache/proxy server in a Ubuntu 12.04 box with ...
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619 views

Centos VM serving multiple public IP: how to configure network interface?

I have a Centos 5.6 VM (vSphere client) already responding to two different public IPs on eth0 and eth0:1 and I'm trying to add eth0:2. I copied the eth0 config file and restarted the network service. ...
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Multiple network cards, controlling where my traffic goes

This is an Ubuntu 12.04 server install. I have multiple network cards, eth0 and eth1 lets call them. eth0 is connected to the internet, and all of my traffic goes through it, until eth1 gets plugged ...
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What are the steps to set up a Hyper-V solution with one NIC

I have successfully installed centos on a virtual machine via Hyper-V on Windows Server 2008 R2. This server has one NIC. I have created a virtual NIC, and virtual subnet, and within the virtual ...
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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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281 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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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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NIC reporting as devXXXX and not ethX

We recently noticed our 10gE NIC was reporting as devXXXXX. Does anyone know why this would be given this name as opposed to ethX? Our System: The issue occurred on two separate servers. We are ...
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I have a WinXP machine with 2 ethernet ports. One is connected to a LAN, another is connected to a WAN. How do I make this work? [closed]

I have a WinXP machine which has 2 ethernet ports. The information I've found indicates that the first nic in the advanced settings list is the one that receives all traffic. I'd like to configure ...
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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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How to measure a driver's memory consumption in Windows?

I've heard an unchecked gossip that Realtek drivers on Windows 2008 suffer from memory leakage. My computer with this network card and OS suffers exactly from this symptom - high memory consumption. ...
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346 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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976 views

Transmit rate decreases when using both Intel NIC 10G ports

I'm using the Intel 82599EB 10G NIC on a server running RHEL6. I ran a program where packets are generated at high rates. The NIC was previously installed on another PC where I was able to generate ...
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312 views

Disable (or switch off) a network interface on windows but keep the “plug and play”

I'm looking for a good workaround to do this on Windows 7 and Windows XP: Disable or make ineffective the network interface (ETH, WIFI, any NIC). If the user connect his ETH cable, the network ...
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540 views

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 ...