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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62 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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420 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
132 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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153 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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157 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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233 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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108 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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245 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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141 views

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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482 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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250 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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388 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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671 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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117 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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305 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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542 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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132 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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402 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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456 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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800 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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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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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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355 views

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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173 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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68 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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81 views

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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602 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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497 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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84 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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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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217 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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272 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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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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73 views

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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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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116 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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623 views

Intel DriverInstall issue on HP ProLiant server DL580G5

Given: A HP ProLiant server to be used for Hyper-V server (R 2) Problem: The server has a HP NC364T quad port card, which actually is an Intel 1000 Pro adapter. We are stuck getting this adapter ...
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1k views

Modify NIC bind order for Hyper-V Server/Server Core

Is there a way to modify the NIC bind order in Hyper-V Server/Server Core? For some reason, one of our Hyper-V servers decided to reverse the bind order of two of the six NIC ports on the machine, ...
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2k views

How to change the duplex of a NIC remotely on windows?

I want to change remotely on windows xp the speed/duplex of a NIC. I try with mmc, netsh but without result. I have to log me in with rdp to change the duplex, or remotely search in the registry and ...
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Two Nics, one direct connection and forwarding

I'm designing a system with a Server PC with two nics running Centos 6 and a Sensor Device which runs a web server. The Sensor Device is connected directly to one of the nics of the Server PC. All ...
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138 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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366 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 ...
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148 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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2k views

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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84 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 ...